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  • Cannot exclude a path from basic auth when using a front controller script

    - by Adam Monsen
    I have a small PHP/Apache2 web application wherein I'd like to do two seemingly incompatible operations: Route all requests through a single PHP script (a "front controller", if you will) Secure everything except API calls with HTTP basic authentication I can satisfy either requirement just fine in isolation, it's when I try to do both at once that I am blocked. For no good reason I'm trying to accomplish these requirements solely with Apache configuration. Here are the requirements stated as an example. A GET request for this URL: http://basic/api/listcars?max=10 should be sent through front.php without requiring basic auth. front.php will get /api/listcars?max=10 and do whatever it needs to with that. Here's what I think should work. In my /etc/hosts I added 127.0.0.1 basic and I am using this Apache config: <Location /> AuthType Basic AuthName "Home Secure" AuthUserFile /etc/apache2/passwords require valid-user </Location> <VirtualHost *:80> ServerName basic DocumentRoot /var/www/basic <Directory /var/www/basic> <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{SCRIPT_FILENAME} !-f RewriteCond %{SCRIPT_FILENAME} !-d RewriteRule ^(.*)$ /front.php/$1 [QSA,L] </IfModule> </Directory> <Location /api> Order deny,allow Allow from all Satisfy any </Location> </VirtualHost> But I still always get a HTTP 401: Authorization Required response. I can make it work by changing <Location /api> into <Location ~ /api> but this allows more than I want to past basic auth. I also tried changing the <Directory /var/www/basic> section into <Location />, but this doesn't work either (and it results in some strange values for PATH_TRANSLATED being passed to the script). I searched around and found many examples of selective exclusion of basic auth, but none that also incorporated a front controller. I could certainly do something like handle basic auth in the front controller, but if I can have Apache do that instead I'll be able to keep all authentication logic out of my PHP code. A friend suggested splitting this into two vhosts, which I know also works. This used to be two separate vhosts, actually. I'm using Apache 2.2.22 / PHP 5.3.10 on Ubuntu 12.04.

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  • Maven test dependency in multi module project

    - by user209947
    I use maven to build a multi module project. My module 2 depends on Module 1 src at compile scope and module 1 tests in test scope. Module 2 - <dependency> <groupId>blah</groupId> <artifactId>MODULE1</artifactId> <version>blah</version> <classifier>tests</classifier> <scope>test</scope> </dependency> This works fine. Say my module 3 depends on Module1 src and tests at compile time. Module 3 - <dependency> <groupId>blah</groupId> <artifactId>MODULE1</artifactId> <version>blah</version> <classifier>tests</classifier> <scope>complie</scope> </dependency> When I run mvn clean install, my build runs till module 3, fails at module 3 as it couldnt resolve the module 1 test dependency. Then I do a mvn install on module 3 alone, go back and run mvn install on my parent pom to make it build. How can i fix this?

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  • error in auth.log but can login; LDAP/PAM

    - by Peter
    I have a server running OpenLDAP. When I start a ssh-session I can log in without problems, but an error appears in the logs. This only happens when I log in with a LDAP account (so not with a system account such as root). Any help to eliminate these errors would be much appreciated. The relevant piece from /var/log/auth.log sshd[6235]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=example.com user=peter sshd[6235]: Accepted password for peter from 192.168.1.2 port 2441 ssh2 sshd[6235]: pam_unix(sshd:session): session opened for user peter by (uid=0) pam common-session session [default=1] pam_permit.so session required pam_unix.so session optional pam_ldap.so session required pam_mkhomedir.so skel=/etc/skel umask=0022 session required pam_limits.so session required pam_unix.so session optional pam_ldap.so pam common-auth auth [success=1 default=ignore] pam_ldap.so auth required pam_unix.so nullok_secure use_first_pass auth required pam_permit.so session required pam_mkhomedir.so skel=/etc/skel umask=0022 silent auth sufficient pam_unix.so nullok_secure use_first_pass auth requisite pam_succeed_if.so uid >= 1000 quiet auth sufficient pam_ldap.so use_first_pass auth required pam_deny.so pam common-account account [success=2 new_authtok_reqd=done default=ignore] pam_ldap.so account [success=1 default=ignore] pam_unix.so account required pam_unix.so account sufficient pam_succeed_if.so uid < 1000 quiet account [default=bad success=ok user_unknown=ignore] pam_ldap.so account required pam_permit.so account sufficient pam_ldap.so account sufficient pam_unix.so

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  • kernel module compiling error

    - by wati
    sh@ubuntu:/home/ccpp/helloworld$ make gcc-4.6 -O2 -DMODULE -D_KERNEL_ -W -Wall -Wstrict-prototypes -Wmissing-prototypes -isystem /lib/modules/`uname -r`/build/include -c -o hello-1.o hello-1.c hello-1.c:4:0: warning: "MODULE" redefined [enabled by default] <command-line>:0:0: note: this is the location of the previous definition hello-1.c:6:0: warning: "_KERNEL_" redefined [enabled by default] <command-line>:0:0: note: this is the location of the previous definition In file included from /lib/modules/3.2.0-25-generic/build/include/linux/list.h:4:0, from /lib/modules/3.2.0-25-generic/build/include/linux/module.h:9, from hello-1.c:7: /lib/modules/3.2.0-25-generic/build/include/linux/types.h:13:2: warning: #warning "Attempt to use kernel headers from user space, see http://kernelnewbies.org/KernelHeaders" [-Wcpp] In file included from /lib/modules/3.2.0-25-generic/build/include/linux/module.h:9:0, from hello-1.c:7: /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘INIT_LIST_HEAD’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:26:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:27:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘__list_add’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:41:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:42:5: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:43:5: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:44:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_add’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:62:28: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_add_tail’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:76:22: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘__list_del’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:88:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:89:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘__list_del_entry’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:101:18: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:101:31: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_del’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:106:18: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:106:31: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:107:7: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:108:7: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_replace’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:125:5: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:125:17: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:126:5: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:127:5: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:127:17: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:128:5: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_is_last’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:179:13: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_empty’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:188:13: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_empty_careful’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:206:31: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:207:40: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_rotate_left’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:219:15: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_is_singular’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:230:35: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:230:49: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘__list_cut_position’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:236:37: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:237:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:237:19: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:238:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:239:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:240:7: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:241:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:242:11: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_cut_position’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:265:8: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘__list_splice’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:277:32: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:278:31: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:280:7: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:281:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:283:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:284:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_splice’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:296:33: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_splice_tail’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:308:27: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_splice_init’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:322:33: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘list_splice_tail_init’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:339:27: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘INIT_HLIST_NODE’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:572:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:573:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘hlist_unhashed’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:578:11: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘hlist_empty’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:583:11: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘__hlist_del’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:588:29: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:589:31: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:592:7: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘hlist_del’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:598:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:599:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘hlist_add_head’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:612:30: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:613:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:615:8: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:615:20: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:616:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:617:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:617:15: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘hlist_add_before’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:624:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:624:17: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:625:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:626:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:626:18: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:627:5: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘hlist_add_after’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:633:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:633:16: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:634:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:635:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:635:18: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:637:9: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:638:7: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:638:29: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘hlist_add_fake’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:644:3: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:644:15: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h: In function ‘hlist_move_list’: /lib/modules/3.2.0-25-generic/build/include/linux/list.h:654:5: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:654:18: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:655:9: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:656:6: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:656:27: error: dereferencing pointer to incomplete type /lib/modules/3.2.0-25-generic/build/include/linux/list.h:657:5: error: dereferencing pointer to incomplete type In file included from /lib/modules/3.2.0-25-generic/build/include/linux/module.h:12:0, from hello-1.c:7: /lib/modules/3.2.0-25-generic/build/include/linux/cache.h: At top level: /lib/modules/3.2.0-25-generic/build/include/linux/cache.h:5:23: fatal error: asm/cache.h: No such file or directory compilation terminated. make: *** [hello-1.o] Error 1 i got this error after compiling an helloworld program my program is #define MODULE #define LINUX #define _KERNEL_ #include <linux/module.h> #include <linux/kernel.h> int init_module(void) { printk("<1>hello World 1.\n"); return 0; } void cleanup_module(void) { printk(KERN_ALERT "goodbye world 1.\n"); } MODULE_LICENSE("GPL"); my make file is: TARGET := hello-1 WARN := -W -Wall -Wstrict-prototypes -Wmissing-prototypes INCLUDE := -isystem /lib/modules/`uname -r`/build/include CFLAGS := -O2 -DMODULE -D_KERNEL_ ${WARN} ${INCLUDE} CC := gcc-4.6 ${TARGET}.o: ${TARGET}.c .PHONY: clean clean: rm -rf ${TARGET}.o iam usin kernel 3.2.0.25 as novice i can't able to figure out where the problem is I SEARCHED EVERY THING I CAN TO KNOW ABOUT THIS ERROR BUT I CANT UNDERSTAND &I GET IRRELEVANT DOCS anybody help me please

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  • Organizations &amp; Architecture UNISA Studies &ndash; Chap 7

    - by MarkPearl
    Learning Outcomes Name different device categories Discuss the functions and structure of I/.O modules Describe the principles of Programmed I/O Describe the principles of Interrupt-driven I/O Describe the principles of DMA Discuss the evolution characteristic of I/O channels Describe different types of I/O interface Explain the principles of point-to-point and multipoint configurations Discuss the way in which a FireWire serial bus functions Discuss the principles of InfiniBand architecture External Devices An external device attaches to the computer by a link to an I/O module. The link is used to exchange control, status, and data between the I/O module and the external device. External devices can be classified into 3 categories… Human readable – e.g. video display Machine readable – e.g. magnetic disk Communications – e.g. wifi card I/O Modules An I/O module has two major functions… Interface to the processor and memory via the system bus or central switch Interface to one or more peripheral devices by tailored data links Module Functions The major functions or requirements for an I/O module fall into the following categories… Control and timing Processor communication Device communication Data buffering Error detection I/O function includes a control and timing requirement, to coordinate the flow of traffic between internal resources and external devices. Processor communication involves the following… Command decoding Data Status reporting Address recognition The I/O device must be able to perform device communication. This communication involves commands, status information, and data. An essential task of an I/O module is data buffering due to the relative slow speeds of most external devices. An I/O module is often responsible for error detection and for subsequently reporting errors to the processor. I/O Module Structure An I/O module functions to allow the processor to view a wide range of devices in a simple minded way. The I/O module may hide the details of timing, formats, and the electro mechanics of an external device so that the processor can function in terms of simple reads and write commands. An I/O channel/processor is an I/O module that takes on most of the detailed processing burden, presenting a high-level interface to the processor. There are 3 techniques are possible for I/O operations Programmed I/O Interrupt[t I/O DMA Access Programmed I/O When a processor is executing a program and encounters an instruction relating to I/O it executes that instruction by issuing a command to the appropriate I/O module. With programmed I/O, the I/O module will perform the requested action and then set the appropriate bits in the I/O status register. The I/O module takes no further actions to alert the processor. I/O Commands To execute an I/O related instruction, the processor issues an address, specifying the particular I/O module and external device, and an I/O command. There are four types of I/O commands that an I/O module may receive when it is addressed by a processor… Control – used to activate a peripheral and tell it what to do Test – Used to test various status conditions associated with an I/O module and its peripherals Read – Causes the I/O module to obtain an item of data from the peripheral and place it in an internal buffer Write – Causes the I/O module to take an item of data form the data bus and subsequently transmit that data item to the peripheral The main disadvantage of this technique is it is a time consuming process that keeps the processor busy needlessly I/O Instructions With programmed I/O there is a close correspondence between the I/O related instructions that the processor fetches from memory and the I/O commands that the processor issues to an I/O module to execute the instructions. Typically there will be many I/O devices connected through I/O modules to the system – each device is given a unique identifier or address – when the processor issues an I/O command, the command contains the address of the address of the desired device, thus each I/O module must interpret the address lines to determine if the command is for itself. When the processor, main memory and I/O share a common bus, two modes of addressing are possible… Memory mapped I/O Isolated I/O (for a detailed explanation read page 245 of book) The advantage of memory mapped I/O over isolated I/O is that it has a large repertoire of instructions that can be used, allowing more efficient programming. The disadvantage of memory mapped I/O over isolated I/O is that valuable memory address space is sued up. Interrupts driven I/O Interrupt driven I/O works as follows… The processor issues an I/O command to a module and then goes on to do some other useful work The I/O module will then interrupts the processor to request service when is is ready to exchange data with the processor The processor then executes the data transfer and then resumes its former processing Interrupt Processing The occurrence of an interrupt triggers a number of events, both in the processor hardware and in software. When an I/O device completes an I/O operations the following sequence of hardware events occurs… The device issues an interrupt signal to the processor The processor finishes execution of the current instruction before responding to the interrupt The processor tests for an interrupt – determines that there is one – and sends an acknowledgement signal to the device that issues the interrupt. The acknowledgement allows the device to remove its interrupt signal The processor now needs to prepare to transfer control to the interrupt routine. To begin, it needs to save information needed to resume the current program at the point of interrupt. The minimum information required is the status of the processor and the location of the next instruction to be executed. The processor now loads the program counter with the entry location of the interrupt-handling program that will respond to this interrupt. It also saves the values of the process registers because the Interrupt operation may modify these The interrupt handler processes the interrupt – this includes examination of status information relating to the I/O operation or other event that caused an interrupt When interrupt processing is complete, the saved register values are retrieved from the stack and restored to the registers Finally, the PSW and program counter values from the stack are restored. Design Issues Two design issues arise in implementing interrupt I/O Because there will be multiple I/O modules, how does the processor determine which device issued the interrupt? If multiple interrupts have occurred, how does the processor decide which one to process? Addressing device recognition, 4 general categories of techniques are in common use… Multiple interrupt lines Software poll Daisy chain Bus arbitration For a detailed explanation of these approaches read page 250 of the textbook. Interrupt driven I/O while more efficient than simple programmed I/O still requires the active intervention of the processor to transfer data between memory and an I/O module, and any data transfer must traverse a path through the processor. Thus is suffers from two inherent drawbacks… The I/O transfer rate is limited by the speed with which the processor can test and service a device The processor is tied up in managing an I/O transfer; a number of instructions must be executed for each I/O transfer Direct Memory Access When large volumes of data are to be moved, an efficient technique is direct memory access (DMA) DMA Function DMA involves an additional module on the system bus. The DMA module is capable of mimicking the processor and taking over control of the system from the processor. It needs to do this to transfer data to and from memory over the system bus. DMA must the bus only when the processor does not need it, or it must force the processor to suspend operation temporarily (most common – referred to as cycle stealing). When the processor wishes to read or write a block of data, it issues a command to the DMA module by sending to the DMA module the following information… Whether a read or write is requested using the read or write control line between the processor and the DMA module The address of the I/O device involved, communicated on the data lines The starting location in memory to read from or write to, communicated on the data lines and stored by the DMA module in its address register The number of words to be read or written, communicated via the data lines and stored in the data count register The processor then continues with other work, it delegates the I/O operation to the DMA module which transfers the entire block of data, one word at a time, directly to or from memory without going through the processor. When the transfer is complete, the DMA module sends an interrupt signal to the processor, this the processor is involved only at the beginning and end of the transfer. I/O Channels and Processors Characteristics of I/O Channels As one proceeds along the evolutionary path, more and more of the I/O function is performed without CPU involvement. The I/O channel represents an extension of the DMA concept. An I/O channel ahs the ability to execute I/O instructions, which gives it complete control over I/O operations. In a computer system with such devices, the CPU does not execute I/O instructions – such instructions are stored in main memory to be executed by a special purpose processor in the I/O channel itself. Two types of I/O channels are common A selector channel controls multiple high-speed devices. A multiplexor channel can handle I/O with multiple characters as fast as possible to multiple devices. The external interface: FireWire and InfiniBand Types of Interfaces One major characteristic of the interface is whether it is serial or parallel parallel interface – there are multiple lines connecting the I/O module and the peripheral, and multiple bits are transferred simultaneously serial interface – there is only one line used to transmit data, and bits must be transmitted one at a time With new generation serial interfaces, parallel interfaces are becoming less common. In either case, the I/O module must engage in a dialogue with the peripheral. In general terms the dialog may look as follows… The I/O module sends a control signal requesting permission to send data The peripheral acknowledges the request The I/O module transfers data The peripheral acknowledges receipt of data For a detailed explanation of FireWire and InfiniBand technology read page 264 – 270 of the textbook

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  • Ubuntu 12.04 OpenCL with Intel and Radeon?

    - by Steve
    I want to setup my Ubuntu 12.04 with OpenCL(Open Computing Language) support for i7 2600k and Radeon HD5870. My Monitor is connected to the integrated Graphics of the i7. Intel OpenCL SDK is installed and working. Iteration of avaliable OpenCL devices shows 2 entries for Intel. As recommended I installed AMD APP SDK 2.6 first and then the fglrx driver. I installed fglrx from Ubuntu repositories. This works fine till here. When I run aticonfig --inital -f and restart the system I get into trouble. Xorg starts only in low-graphics mode. cat /var/log/Xorg.0.log [ 21.201] X.Org X Server 1.12.2 Release Date: 2012-05-29 [ 21.201] X Protocol Version 11, Revision 0 [ 21.201] Build Operating System: Linux 2.6.24-29-xen x86_64 Ubuntu [ 21.201] Current Operating System: Linux chimera 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_ [ 21.201] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=c137757b-486b-4514-9dfe-00c97662 [ 21.201] Build Date: 05 June 2012 08:35:55AM [ 21.201] xorg-server 2:1.12.2+git20120605+server-1.12-branch.aaf48906-0ubuntu0ricotz~precise (For technical suppor [ 21.201] Current version of pixman: 0.26.0 [ 21.201] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. [ 21.201] Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 21.201] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Jun 8 14:22:36 2012 [ 21.247] (==) Using config file: "/etc/X11/xorg.conf" [ 21.247] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [ 21.450] (==) ServerLayout "aticonfig Layout" [ 21.450] (**) |-->Screen "aticonfig-Screen[0]-0" (0) [ 21.450] (**) | |-->Monitor "aticonfig-Monitor[0]-0" [ 21.451] (**) | |-->Device "aticonfig-Device[0]-0" [ 21.451] (==) Automatically adding devices [ 21.451] (==) Automatically enabling devices [ 21.466] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist. [ 21.466] Entry deleted from font path. [ 21.466] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist. [ 21.466] Entry deleted from font path. [ 21.466] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist. [ 21.466] Entry deleted from font path. [ 21.473] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist. [ 21.473] Entry deleted from font path. [ 21.473] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist. [ 21.473] Entry deleted from font path. [ 21.473] (WW) The directory "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType" does not exist. [ 21.473] Entry deleted from font path. [ 21.473] (==) FontPath set to: /usr/share/fonts/X11/misc, /usr/share/fonts/X11/Type1, built-ins [ 21.473] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib [ 21.473] (II) The server relies on udev to provide the list of input devices. If no devices become available, reconfigure udev or disable AutoAddDevices. [ 21.473] (II) Loader magic: 0x7f0ad3b9ab00 [ 21.473] (II) Module ABI versions: [ 21.473] X.Org ANSI C Emulation: 0.4 [ 21.473] X.Org Video Driver: 12.0 [ 21.473] X.Org XInput driver : 16.0 [ 21.473] X.Org Server Extension : 6.0 [ 21.473] (--) PCI:*(0:0:2:0) 8086:0122:1458:d000 rev 9, Mem @ 0xfb800000/4194304, 0xe0000000/268435456, I/O @ 0x00 [ 21.473] (--) PCI: (0:1:0:0) 1002:6898:1787:2289 rev 0, Mem @ 0xd0000000/268435456, 0xfbdc0000/131072, I/O @ 0x000 [ 21.473] (II) Open ACPI successful (/var/run/acpid.socket) [ 21.473] (II) "extmod" will be loaded by default. [ 21.473] (II) "dbe" will be loaded by default. [ 21.473] (II) "glx" will be loaded. This was enabled by default and also specified in the config file. [ 21.473] (II) "record" will be loaded by default. [ 21.473] (II) "dri" will be loaded by default. [ 21.473] (II) "dri2" will be loaded by default. [ 21.473] (II) LoadModule: "glx" [ 21.732] (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/extra-modules.dpkg-tmp/modules/extensions/libgl [ 21.934] (II) Module glx: vendor="Advanced Micro Devices, Inc." [ 21.934] compiled for 6.9.0, module version = 1.0.0 [ 21.934] (II) Loading extension GLX [ 21.934] (II) LoadModule: "extmod" [ 22.028] (II) Loading /usr/lib/xorg/modules/extensions/libextmod.so [ 22.041] (II) Module extmod: vendor="X.Org Foundation" [ 22.041] compiled for 1.12.2, module version = 1.0.0 [ 22.041] Module class: X.Org Server Extension [ 22.041] ABI class: X.Org Server Extension, version 6.0 [ 22.041] (II) Loading extension MIT-SCREEN-SAVER [ 22.041] (II) Loading extension XFree86-VidModeExtension [ 22.041] (II) Loading extension XFree86-DGA [ 22.041] (II) Loading extension DPMS [ 22.041] (II) Loading extension XVideo [ 22.041] (II) Loading extension XVideo-MotionCompensation [ 22.041] (II) Loading extension X-Resource [ 22.041] (II) LoadModule: "dbe" [ 22.041] (II) Loading /usr/lib/xorg/modules/extensions/libdbe.so [ 22.066] (II) Module dbe: vendor="X.Org Foundation" [ 22.066] compiled for 1.12.2, module version = 1.0.0 [ 22.066] Module class: X.Org Server Extension [ 22.066] ABI class: X.Org Server Extension, version 6.0 [ 22.066] (II) Loading extension DOUBLE-BUFFER [ 22.066] (II) LoadModule: "record" [ 22.066] (II) Loading /usr/lib/xorg/modules/extensions/librecord.so [ 22.077] (II) Module record: vendor="X.Org Foundation" [ 22.077] compiled for 1.12.2, module version = 1.13.0 [ 22.077] Module class: X.Org Server Extension [ 22.077] ABI class: X.Org Server Extension, version 6.0 [ 22.077] (II) Loading extension RECORD [ 22.077] (II) LoadModule: "dri" [ 22.077] (II) Loading /usr/lib/xorg/modules/extensions/libdri.so [ 22.082] (II) Module dri: vendor="X.Org Foundation" [ 22.082] compiled for 1.12.2, module version = 1.0.0 [ 22.082] ABI class: X.Org Server Extension, version 6.0 [ 22.082] (II) Loading extension XFree86-DRI [ 22.082] (II) LoadModule: "dri2" [ 22.082] (II) Loading /usr/lib/xorg/modules/extensions/libdri2.so [ 22.083] (II) Module dri2: vendor="X.Org Foundation" [ 22.083] compiled for 1.12.2, module version = 1.2.0 [ 22.083] ABI class: X.Org Server Extension, version 6.0 [ 22.083] (II) Loading extension DRI2 [ 22.083] (II) LoadModule: "fglrx" [ 22.083] (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/extra-modules.dpkg-tmp/modules/drivers/fglrx_dr [ 22.399] (II) Module fglrx: vendor="FireGL - ATI Technologies Inc." [ 22.399] compiled for 1.4.99.906, module version = 8.96.4 [ 22.399] Module class: X.Org Video Driver [ 22.399] (II) Loading sub module "fglrxdrm" [ 22.399] (II) LoadModule: "fglrxdrm" [ 22.399] (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/extra-modules.dpkg-tmp/modules/linux/libfglrxdr [ 22.445] (II) Module fglrxdrm: vendor="FireGL - ATI Technologies Inc." [ 22.445] compiled for 1.4.99.906, module version = 8.96.4 [ 22.445] (II) ATI Proprietary Linux Driver Version Identifier:8.96.4 [ 22.445] (II) ATI Proprietary Linux Driver Release Identifier: 8.96.7 [ 22.445] (II) ATI Proprietary Linux Driver Build Date: Mar 12 2012 13:06:50 [ 22.445] (++) using VT number 7 [ 22.445] (WW) Falling back to old probe method for fglrx [ 23.043] (II) Loading PCS database from /etc/ati/amdpcsdb [ 23.082] (--) Chipset Supported AMD Graphics Processor (0x6898) found [ 23.107] (WW) fglrx: No matching Device section for instance (BusID PCI:0@1:0:1) found [ 23.107] (II) fglrx: intel VGA device detected, load intel driver. [ 23.107] (II) LoadModule: "intel" [ 23.211] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so [ 23.475] (II) Module intel: vendor="X.Org Foundation" [ 23.475] compiled for 1.12.2, module version = 2.19.0 [ 23.475] Module class: X.Org Video Driver [ 23.475] ABI class: X.Org Video Driver, version 12.0 [ 23.476] ukiDynamicMajor: found major device number 249 [ 23.476] ukiDynamicMajor: found major device number 249 [ 23.476] ukiOpenByBusid: Searching for BusID PCI:1:0:0 [ 23.476] ukiOpenDevice: node name is /dev/ati/card0 [ 23.476] ukiOpenDevice: open result is 8, (OK) [ 23.476] ukiOpenByBusid: ukiOpenMinor returns 8 [ 23.476] ukiOpenByBusid: ukiGetBusid reports PCI:1:0:0 [ 23.540] (WW) PowerXpress feature is not supported [ 23.540] (EE) No devices detected. [ 23.540] (==) Matched intel as autoconfigured driver 0 [ 23.540] (==) Matched vesa as autoconfigured driver 1 [ 23.540] (==) Matched fbdev as autoconfigured driver 2 [ 23.540] (==) Assigned the driver to the xf86ConfigLayout [ 23.540] (II) LoadModule: "intel" [ 23.540] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so [ 23.540] (II) Module intel: vendor="X.Org Foundation" [ 23.540] compiled for 1.12.2, module version = 2.19.0 [ 23.540] Module class: X.Org Video Driver [ 23.540] ABI class: X.Org Video Driver, version 12.0 [ 23.540] (II) UnloadModule: "intel" [ 23.540] (II) Unloading intel [ 23.540] (II) Failed to load module "intel" (already loaded, 32522) [ 23.540] (II) LoadModule: "vesa" [ 23.583] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so [ 23.620] (II) Module vesa: vendor="X.Org Foundation" [ 23.620] compiled for 1.12.2, module version = 2.3.1 [ 23.620] Module class: X.Org Video Driver [ 23.620] ABI class: X.Org Video Driver, version 12.0 [ 23.620] (II) LoadModule: "fbdev" [ 23.620] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so [ 23.661] (II) Module fbdev: vendor="X.Org Foundation" [ 23.661] compiled for 1.12.2, module version = 0.4.2 [ 23.661] Module class: X.Org Video Driver [ 23.661] ABI class: X.Org Video Driver, version 12.0 [ 23.661] (II) ATI Proprietary Linux Driver Version Identifier:8.96.4 [ 23.661] (II) ATI Proprietary Linux Driver Release Identifier: 8.96.7 [ 23.661] (II) ATI Proprietary Linux Driver Build Date: Mar 12 2012 13:06:50 [ 23.661] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, 4 Series, G45/G43, Q45/Q43, G41, B43, B43, Clarkdale, Arrandale, Sandybridge Desktop (GT1), Sandybridge Desktop (GT2), Sandybridge Desktop (GT2+), Sandybridge Mobile (GT1), Sandybridge Mobile (GT2), Sandybridge Mobile (GT2+), Sandybridge Server, Ivybridge Mobile (GT1), Ivybridge Mobile (GT2), Ivybridge Desktop (GT1), Ivybridge Desktop (GT2), Ivybridge Server, Ivybridge Server (GT2) [ 23.661] (II) VESA: driver for VESA chipsets: vesa [ 23.661] (II) FBDEV: driver for framebuffer: fbdev [ 23.661] (++) using VT number 7 [ 23.661] (WW) xf86OpenConsole: setpgid failed: Operation not permitted [ 23.661] (WW) xf86OpenConsole: setsid failed: Operation not permitted [ 23.661] (WW) Falling back to old probe method for fglrx [ 23.661] (II) Loading PCS database from /etc/ati/amdpcsdb [ 23.661] (WW) Falling back to old probe method for vesa [ 23.661] (WW) Falling back to old probe method for fbdev [ 23.661] (EE) No devices detected. [ 23.661] Fatal server error: [ 23.661] no screens found [ 23.661] Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 23.661] Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 23.661] xorg.conf: cat /etc/X11/xorg.conf Section "ServerLayout" Identifier "aticonfig Layout" Screen 0 "aticonfig-Screen[0]-0" 0 0 EndSection Section "Module" Load "glx" EndSection Section "Monitor" Identifier "aticonfig-Monitor[0]-0" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" EndSection Section "Device" Identifier "aticonfig-Device[0]-0" Driver "fglrx" BusID "PCI:1:0:0" EndSection Section "Screen" Identifier "aticonfig-Screen[0]-0" Device "aticonfig-Device[0]-0" Monitor "aticonfig-Monitor[0]-0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Is there a way to get the Radeon to work in a hybrid configuration or to use the Radeon as an OpenCL only device?

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  • When module calling gets ugly

    - by Pete
    Has this ever happened to you? You've got a suite of well designed, single-responsibility modules, covered by unit tests. In any higher-level function you code, you are (95% of the code) simply taking output from one module and passing it as input to the next. Then, you notice this higher-level function has turned into a 100+ line script with multiple responsibilities. Here is the problem. It is difficult (impossible) to test that script. At least, it seems so. Do you agree? In my current project, all of the bugs came from this script. Further detail: each script represents a unique solution, or algorithm, formed by using different modules in different ways. Question: how can you remedy this situation? Knee-jerk answer: break the script up into single-responsibility modules. Comment on knee-jerk answer: it already is! Best answer I can come up with so far: create higher-level connector objects which "wire" modules together in particular ways (take output from one module, feed it as input to another module). Thus if our script was: FooInput fooIn = new FooInput(1, 2); FooOutput fooOutput = fooModule(fooIn); Double runtimevalue = getsomething(fooOutput.whatever); BarInput barIn = new BarInput( runtimevalue, fooOutput.someOtherValue); BarOutput barOut = barModule(BarIn); It would become with a connector: FooBarConnectionAlgo fooBarConnector = new fooBarConnector(fooModule, barModule); FooInput fooIn = new FooInput(1, 2); BarOutput barOut = fooBarConnector(fooIn); So the advantage is, besides hiding some code and making things clearer, we can test FooBarConnectionAlgo. I'm sure this situation comes up a lot. What do you do?

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  • Dot Net Nuke module works in "Edit" mode but not for "View": cache problem?

    - by Godeke
    I have a DNN task that simply runs some Javascript to compute a price based on a few input fields. This module works fine on our production site, but we had a company do a skin for us to improve the look of the site and the module fails under this new system. (DNN 05.06.00 (459) although it was 5.5 prior... I updated in a futile hope that it was a bug in the old revision.) What is incredibly odd about this is that the module works fine when I'm logged in to DNN and using the Edit mode as an administrator. In this case the small snippet of JavaScript loads fine and filling the fields results in a price. On the other hand it I click "View" (or more importantly, if I'm not logged in at all) the page loads a cached copy. Even odder, I have found the cache files in \Portals\2\Cache\Pages are generated and then only the cached data is being used. When the cached copy is loaded, the JavaScript doesn't appear (it is normally created via a Page.ClientScript.RegisterClientScriptBlock(). Additionally, the button which posts the data to the server doesn't execute any of the server side code (confirmed with a debugger) but instead just reloads the cached copy. If I manually delete the files in \Portals\2\Cache\Pages then everything works properly, but I have to do so after every page load: failing to do so simply loads the page as it was last generated repeatedly. Resetting the application (either via the UI or editing web.config) doesn't change this and clearing the cache from the Host Settings page doesn't actually clear these cached pages. I'm guessing that Edit mode bypasses the cache in some way, but I have gone as far as turning off all caching on the site (which is horrible for performance) and the cached version is still loaded. Has anyone seen anything like this? Shouldn't clearing the cache clear the files (I'm using the File provider for caching)? Shouldn't even a cached page go back to the server if the user posts back? EDIT: I should point out that permissions don't appear to be a problem on the cache directory... other pages cached output are deleted from this folder, just this page has this issue. EDIT 2: Clarifying some settings and conditions which I didn't provide. First, this module works fine in production under DNN 5.6.0. In our test environment with the consulting company's changes it fails (the changes are skin and page layout only in theory: the module source itself verifies as unchanged). All cache settings and the like have been verified the same between the two and we only resorted to setting the module cache to 0 and -1 (and disabling the test site's cache entirely) when we couldn't find another cause for the problem. I have watched the cache work correctly on many other pages in test: there is something about this page that is causing the problem. We have punted and are creating an installable skin based on the consultant's work as I suspect they have somehow corrupted the DNN install (database side I think).

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  • How to prevent blocking http auth popups on firefox restart with many tabs open

    - by Glen S. Dalton
    I am using the latest firefox with tab mix plus and tabgoups manager. I have maybe 50 or 100 tabs oben in different tab groups. When I shutdown firefox and start it again all tabs and tab groups are perfectly rebuilt. But I have also many pages open that are behind a standard http auth, and these pages all request their usernames and passwords. So during startup firefox pops up all these pages' http auth windows. And they block everything else in firefox, they are like modal windows. (I am involved in website development and the beta versions are behind apache http auth.) I have to click many times the OK button in the popups, before I can do anything. All the usernames and passwords are already filled in. (And the firefox taskbar entry blinks and the firefox window heading also blinks, and focus switches back and foth, which also annoys me. And sometimes the popups do not react to my clicks, because firefox is maybe just switching focus somewhere else. This is the worst.) I want a plugin or some way to skip those popups. There are some plugins I tried some time ago, but they did not do what I need, because they require a mouse click for each login, which is no improvement over the situation like it already is. This is not about password storage (because firefox already stores them). But of course, if some password storing plugin could heal this it would be great.

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  • Apache: redirect to https before AUTH for server-status

    - by Putnik
    I want to force https and basic auth for server-status output (mod_status). If I enable auth and user asks for http://site/server-status apache first asks for pass, then redirects to httpS, then asks for pass again. This question is similar to Apache - Redirect to https before AUTH and force https with apache before .htpasswd but I cannot get it work because we are speaking not about generic folder but Location structure. My config (shortly) is as follows: <Location /server-status> SSLRequireSSL <IfModule mod_rewrite.c> RewriteEngine on RewriteBase /server-status RewriteCond %{HTTPS} off RewriteCond %{SERVER_PORT} 80 RewriteRule ^ - [E=nossl] RewriteRule (.*) https://site/server-status} [R=301,L] </IfModule> SetHandler server-status Order deny,allow Deny from all Allow from localhost ip6-localhost Allow from 1.2.3.0/24 Allow from env=nossl AuthUserFile /etc/httpd/status-htpasswd AuthName "Password protected" AuthType Basic Require valid-user Satisfy any </Location> I assume Allow from env=nossl should allow everyone with RewriteCond %{HTTPS} off and server port 80, then force it to redirect but it does not work. Please note, I do not want force to SSL the whole site but /server-status only. If it matters the server has several sites. What am I doing wrong? Thank you.

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  • Problem with Outlook 2010 (SMTP AUTH LOGIN)

    - by Filipe YaBa Polido
    **IGNORE THIS QUESTION - SOLVED WITH A PYTHON SCRIPT available at: http://yabahaus.blogspot.com I have to connect one customer Outlook 2010 to a remote server on which I have either no right, neither way to talk to the sysadmin. This is the thing, after installing and reviewing the logs on Wireshark: Outlook Express: HELO machine AUTH LOGIN username base64 encoded password base64 encoded mails go through. Outlook 2010: HELO machine AUTH DIGEST-MD5 response from server Outlook sends just a * AUTH LOGIN password base64 encoded So... I can send mails in the same domain, but can't send outside, it gives me a relay denied message. My point is... Why the h**l Outlook 2010 doesn't send the username AND the password?! It can never login the right way :| With other versions of Outlook it works fine, and with OE works great, it auths and allows to send mail to a different domain. I've googled and nothing worked. I'm pretty sure that I'm not alone with this one. My last resort will be to configure a local proxy/server that relays to the original one :| Any help would be appreciated. Sorry my bad english as is not my natural language. Thanks.

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  • Problem with Outlook 2010 (SMTP AUTH LOGIN)

    - by Filipe YaBa Polido
    I have to connect one customer Outlook 2010 to a remote server on which I have either no right, neither way to talk to the sysadmin. This is the thing, after installing and reviewing the logs on Wireshark: Outlook Express: HELO machine AUTH LOGIN username base64 encoded password base64 encoded mails go through. Outlook 2010: HELO machine AUTH DIGEST-MD5 response from server Outlook sends just a * AUTH LOGIN password base64 encoded So... I can send mails in the same domain, but can't send outside, it gives me a relay denied message. My point is... Why the h**l Outlook 2010 doesn't send the username AND the password?! It can never login the right way :| With other versions of Outlook it works fine, and with OE works great, it auths and allows to send mail to a different domain. I've googled and nothing worked. I'm pretty sure that I'm not alone with this one. My last resort will be to configure a local proxy/server that relays to the original one :| Any help would be appreciated. Sorry my bad english as is not my natural language. Thanks.

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  • Finding the current user authenticated by basic auth (Apache)

    - by jtd
    When you log in through a basic auth page, is the username you authenticated as stored anywhere (on the server or client machine), maybe in an environment variable? Background: I have a common web administration page for an e-mail server and I'd like to know who is doing what. When a user successfully logs in via basic auth, I somehow want to be able to identify them and log their actions. So each time a request is submitted, I can write to a log file. The basic format would be: $username ran a $function against $useraccount so if a user changed someone's permissions, eg: Admin-Bob ran a permission change against User-Scott So if errors occur, I can easily trace back in the log file what actions lead to the cause. I tried checking the %ENV hash to no avail, any Ideas? I don't really want to get into PHP-like sessions, because that would mean scrapping my basic auth, which gives me a fine degree of control already. If I have to code something with sessions, I'd need to implement a system to block users after maximum tries and so on, which I don't really want to code. I think this is better geared towards serverfault because it pertains to Apache moreso than the programming language. Sessions can be done in a myriad of languages.

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  • SVN very slow over HTTP (seems auth related)

    - by Sydius
    I'm using SVN version 1.6.6 (r40053) via the command-line in Ubuntu 10.04 and connecting to a remote repository over HTTP that is in the local network. For a while, it worked fine, but has recently become very slow for any operation that requires communication with the repository, however it does eventually work after several minutes (~3m for svn up). Looking at Wireshark, it appears to be taking a full minute between the HTTP auth denied and the subsequent request containing credentials. The issue is local to my machine because other coworkers running Ubuntu are not having the issue and I've tried using my credentials from another machine and it was very fast. I tried deleting the .subversion folder in my home directory and checking everything out fresh, but it didn't help. Update: I think it's auth related. When I check out SVN repositories off of the Internet over HTTP (from Google Code, for example), everything is very fast until I do something that requires a password. Before prompting for the password for the first time, it stalls for at least a minute. Update 2: I set the neon-debug-mask in the SVN settings (in /etc/subversion/servers under [Global]) to 138 and it seems to spending a lot of time on 'auth: Trying Basic challenge...'

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  • How do I install mod_dav_svn module on an Apache / MAMP server?

    - by fettereddingoskidney
    How do I install additional modules into my server configuration? Currently all of the other modules are installed in /Applications/MAMP/Library/modules...and I see that they are mod_*.so source files, but I cannot seem to get mine to end up here... :? I am trying to set up an SVN repository and use my Apache (MAMP) server to serve the repository. I am using the subversion installation that came (pre-installed?) on Mac OS X 10.5. The repository is working, but I cannot access it remotely through my MAMP server using a client program (Dreamweaver CS5). When I try, I get an error from Dreamweaver, saying: Cannot connect to host xxx: Connection refused. This, I believe, is because I have not properly configured my Apache server to serve the svn repository. So, I added the following lines to my httpd.conf file: <Location /subversion> DAV svn SVNPath /Applications/MAMP/htdocs/svn/ AuthType Basic AuthName "Subversion repository" AuthUserFile /applications/mamp/htdocs/.htpasswd Require ServerAdmin </Location> Restarted the server with the command $ /Applications/MAMP/Library/bin/apachectl -k restart I used this path because otherwise the default apachectl path is set to /usr/sbin/apachectl, which is the location of the pre-installed command on Mac OS X, since the OS comes packaged with a built-in Apache server. And I get the error: Syntax error on line 1153 of /Applications/MAMP/conf/apache/httpd.conf: Unknown DAV provider: svn I checked the upper portion of httpd.conf and see that dav_module (mod_dav.so) is loaded and is in fact in my the modules directory of my server. However, mod_dav_svn is not installed in that directory nor is it in the LoadModule portion of httpd.conf. So I need to install it, right? I have tried installing modules into my MAMP server before but was never successful...because I don't know how to do it. Can someone please walk me through how to install that module? Thanks for your time!

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  • How do I use a dependency on a Perl module installed in a non-standard location?

    - by Kinopiko
    I need to install two Perl modules on a web host. Let's call them A::B and X::Y. X::Y depends on A::B (needs A::B to run). Both of them use Module::Install. I have successfully installed A::B into a non-system location using perl Makefile.PL PREFIX=/non/system/location make; make test; make install Now I want to install X::Y, so I try the same thing perl Makefile.PL PREFIX=/non/system/location The output is $ perl Makefile.PL PREFIX=/non/system/location/ Cannot determine perl version info from lib/X/Y.pm *** Module::AutoInstall version 1.03 *** Checking for Perl dependencies... [Core Features] - Test::More ...loaded. (0.94) - ExtUtils::MakeMaker ...loaded. (6.54 >= 6.11) - File::ShareDir ...loaded. (1.00) - A::B ...missing. ==> Auto-install the 1 mandatory module(s) from CPAN? [y] It can't seem to find A::B in the system, although it is installed, and when it tries to auto-install the module from CPAN, it tries to write it into the system directory (ignoring PREFIX). I have tried using variables like PERL_LIB and LIB on the command line, after PREFIX=..., but nothing I have done seems to work. I can do make and make install successfully, but I can't do make test because of this problem. Any suggestions? I found some advice at http://servers.digitaldaze.com/extensions/perl/modules.html to use an environment variable PERL5LIB, but this also doesn't seem to work: export PERL5LIB=/non/system/location/lib/perl5/ didn't solve the problem.

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  • Fast Ethernet module for Cisco 2620

    - by Kenny Rasschaert
    I have a Cisco 2620 Router. It comes with one fast ethernet port built in (circled in red), and one old AUI ethernet module is installed (circled in blue). I figure I can put a transceiver on the AUI interface to get a second RJ45 connector. What I'd really like to have is a second fast ethernet connector. The ideal candidate to achieve this would be the NM-1FE-TX module. Cisco claims on their website that this module is not suitable for the Cisco 2620 and Cisco 2620XM. It says so in "Table 2 Physical Limitation of Serial Modules per Chassis". Indeed, this module was designed for the 3600 series of routers. I've seen claims on the internet, however, of people having this module on a 2620XM, and it being fully functional. This claim gains some credibility because of the fact that in Cisco's own Packet Tracer software, you can install this module on the 2620XM router. I'm looking for a definitive answer. Will this module work on a Cisco 2620? Is there perhaps another way to get a second fast ethernet port on this device?

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  • Request Limit Length Limits for IIS&rsquo;s requestFiltering Module

    - by Rick Strahl
    Today I updated my CodePaste.net site to MVC 3 and pushed an update to the site. The update of MVC went pretty smooth as well as most of the update process to the live site. Short of missing a web.config change in the /views folder that caused blank pages on the server, the process was relatively painless. However, one issue that kicked my ass for about an hour – and not foe the first time – was a problem with my OpenId authentication using DotNetOpenAuth. I tested the site operation fairly extensively locally and everything worked no problem, but on the server the OpenId returns resulted in a 404 response from IIS for a nice friendly OpenId return URL like this: http://codepaste.net/Account/OpenIdLogon?dnoa.userSuppliedIdentifier=http%3A%2F%2Frstrahl.myopenid.com%2F&dnoa.return_to_sig_handle=%7B634239223364590000%7D%7BjbHzkg%3D%3D%7D&dnoa.return_to_sig=7%2BcGhp7UUkcV2B8W29ibIDnZuoGoqzyS%2F%2FbF%2FhhYscgWzjg%2BB%2Fj10ZpNdBkUCu86dkTL6f4OK2zY5qHhCnJ2Dw%3D%3D&openid.assoc_handle=%7BHMAC-SHA256%7D%7B4cca49b2%7D%7BMVGByQ%3D%3D%7D&openid.claimed_id=http%3A%2F%2Frstrahl.myopenid.com%2F&openid.identity=http%3A%2F%2Frstrahl.myopenid.com%2F&openid.mode=id_res&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.ns.sreg=http%3A%2F%2Fopenid.net%2Fextensions%2Fsreg%2F1.1&openid.op_endpoint=http%3A%2F%2Fwww.myopenid.com%2Fserver&openid.response_nonce=2010-10-29T04%3A12%3A53Zn5F4r5&openid.return_to=http%3A%2F%2Fcodepaste.net%2FAccount%2FOpenIdLogon%3Fdnoa.userSuppliedIdentifier%3Dhttp%253A%252F%252Frstrahl.myopenid.com%252F%26dnoa.return_to_sig_handle%3D%257B634239223364590000%257D%257BjbHzkg%253D%253D%257D%26dnoa.return_to_sig%3D7%252BcGhp7UUkcV2B8W29ibIDnZuoGoqzyS%252F%252FbF%252FhhYscgWzjg%252BB%252Fj10ZpNdBkUCu86dkTL6f4OK2zY5qHhCnJ2Dw%253D%253D&openid.sig=h1GCSBTDAn1on98sLA6cti%2Bj1M6RffNerdVEI80mnYE%3D&openid.signed=assoc_handle%2Cclaimed_id%2Cidentity%2Cmode%2Cns%2Cns.sreg%2Cop_endpoint%2Cresponse_nonce%2Creturn_to%2Csigned%2Csreg.email%2Csreg.fullname&openid.sreg.email=rstrahl%40host.com&openid.sreg.fullname=Rick+Strahl A 404 of course isn’t terribly helpful – normally a 404 is a resource not found error, but the resource is definitely there. So how the heck do you figure out what’s wrong? If you’re just interested in the solution, here’s the short version: IIS by default allows only for a 1024 byte query string, which is obviously exceeded by the above. The setting is controlled by the RequestFiltering module in IIS 6 and later which can be configured in ApplicationHost.config (in \%windir\system32\inetsvr\config). To set the value configure the requestLimits key like so: <configuration> <security> <requestFiltering> <requestLimits maxQueryString="2048"> </requestLimits> </requestFiltering> </security> </configuration> This fixed me right up and made the requests work. How do you find out about problems like this? Ah yes the troubles of an administrator? Read on and I’ll take you through a quick review of how I tracked this down. Finding the Problem The issue with the error returned is that IIS returns a 404 Resource not found error and doesn’t provide much information about it. If you’re lucky enough to be able to run your site from the localhost IIS is actually very helpful and gives you the right information immediately in a nicely detailed error page. The bottom of the page actually describes exactly what needs to be fixed. One problem with this easy way to find an error: You HAVE TO run localhost. On my server which has about 10 domains running localhost doesn’t point at the particular site I had problems with so I didn’t get the luxury of this nice error page. Using Failed Request Tracing to retrieve Error Info The first place I go with IIS errors is to turn on Failed Request Tracing in IIS to get more error information. If you have access to the server to make a configuration change you can enable Failed Request Tracing like this: Find the Failed Request Tracing Rules in the IIS Service Manager.   Select the option and then Edit Site Tracing to enable tracing. Then add a rule for * (all content) and specify status codes from 100-999 to capture all errors. if you know exactly what error you’re looking for it might help to specify it exactly to keep the number of errors down. Then run your request and let it fail. IIS will throw error log files into a folder like this C:\inetpub\logs\FailedReqLogFiles\W3SVC5 where the last 5 is the instance ID of the site. These files are XML but they include an XSL stylesheet that provides some decent formatting. In this case it pointed me straight at the offending module:   Ok, it’s the RequestFilteringModule. Request Filtering is built into IIS 6-7 and configured in ApplicationHost.config. This module defines a few basic rules about what paths and extensions are allowed in requests and among other things how long a query string is allowed to be. Most of these settings are pretty sensible but the query string value can easily become a problem especially if you’re dealing with OpenId since these return URLs are quite extensive. Debugging failed requests is never fun, but IIS 6 and forward at least provides us the tools that can help us point in the right direction. The error message the FRT report isn’t as nice as the IIS error message but it at least points at the offending module which gave me the clue I needed to look at request restrictions in ApplicationHost.config. This would still be a stretch if you’re not intimately familiar, but I think with some Google searches it would be easy to track this down with a few tries… Hope this was useful to some of you. Useful to me to put this out as a reminder – I’ve run into this issue before myself and totally forgot. Next time I got it, right?© Rick Strahl, West Wind Technologies, 2005-2010Posted in ASP.NET  Security  

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  • Which LAN card / module combinations proven to work with Wake on LAN

    - by pablomo
    I've got a 12.04 headless server that I've been trying to get to work with wake-on-lan. The card is Marvel 88E8053 using the sky2 module. Although WOL is enabled in BIOS and ethtool shows the card as WOL enabled, it refuses to wake when I send the magic packet. I have verified that the packet is being received OK when the machine is on. The machine does wake OK from a BIOS alarm which suggests it is a network card issue. I've seen reference to bugs in sky2 that mean WOL fails in recent versions of Ubuntu (and have tried a module conf file as suggested here but to no avail) So I am thinking the best bet is to replace the ethernet card with one that definitely works with WOL in 12.04 - please could you post your card make and model no if you are using it successfully?

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  • Approach on working with many programmers on one module/feature

    - by Panoy
    How can 2 or more developers code a certain feature/module of a software? Let's assume that the module is big and feature rich. How would they prevent each other from overlapping their code? Say, we have the same method but is implemented in a different way. Do you think it might be better to have one focused at a specific feature only? Is a version control system like Git would help solve the problem? Is it correct that it allows developers to have these "branches" and then merge it later on? What's your take on this?

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  • Install squid3 + and eCAP module

    - by Hacker
    I want to install squid3 and eCAP module on my latest ubuntu. Squid installed well with command i followed these instructions. http://e-healthexpert.org/node/431 sudo apt-get install squid3 but how do i configure it to enable eCAP module ?. I need to give something like --enable-ecap option while installation, which i could not. Then i tried to manually install using http://code.google.com/p/squid-ecap-gzip/source/browse/wiki/Installation.wiki?r=24 but while installing squid3 it gives error. i.e. command sudo make gives some g++ error. SO how do i install it and configure for eCAP. please h

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  • How to set the skin of a DotNetNuke page through code?

    - by ks78
    I'm working on a DNN module that creates DNN pages (tabs) and places DNN modules on them through code. So, far that's working very well. However, I'd like it to also be able to programmatically set the page's skin and place the modules in the appropriate pane. Does anyone know how to do this using code? Solution: I set SkinSrc and ContainerSrc as mika suggested. Here's my source, if you're interested. This is where I set SkinSrc. ''' <summary>Create new DNN tab/page.</summary> Private Function CreatePage(ByVal ParentID As Integer, ByVal PageName As String, ByVal PageTitle As String, ByVal Description As String, ByVal Keywords As String, ByVal Permissions As TabPermissionCollection, Optional ByVal SkinSrc As String = "", Optional ByVal isVisible As Boolean = True, Optional ByVal LoadDefaultModules As Boolean = True) As Tabs.TabInfo Try Dim tabCtrlr As New TabController Dim newTab As New Tabs.TabInfo Dim newPermissions As TabPermissionCollection = newTab.TabPermissions Dim permissionProvider As PermissionProvider = permissionProvider.Instance Dim infPermission As TabPermissionInfo ' set new page properties newTab.PortalID = PortalId newTab.TabName = PageName newTab.Title = PageTitle newTab.Description = Description newTab.KeyWords = Keywords newTab.IsDeleted = False newTab.IsSuperTab = False newTab.IsVisible = isVisible newTab.DisableLink = False newTab.IconFile = "" newTab.Url = "" newTab.ParentId = ParentID 'add skinsrc if specified If (SkinSrc.Length > 0) Then newTab.SkinSrc = SkinSrc ' create new page tabCtrlr.AddTab(newTab, LoadDefaultModules) ' copy permissions selected in Permissions collection For index As Integer = 0 To (Permissions.Count - 1) infPermission = New TabPermissionInfo infPermission.AllowAccess = Permissions(index).AllowAccess infPermission.RoleID = Permissions(index).RoleID infPermission.RoleName = Permissions(index).RoleName infPermission.TabID = Permissions(index).TabID infPermission.PermissionID = Permissions(index).PermissionID 'save permission info newPermissions.Add(infPermission, True) permissionProvider.SaveTabPermissions(newTab) Next index 'return TabInfo of new page Return newTab Catch ex As Exception 'failure Return New Tabs.TabInfo End Try End Function These next two functions were taken from the DNN source and tweaked slightly, so I can't take credit for much of them. Also, if you use these in your own modules there could be issues when upgrading DNN. Although the upgrade from 5.05 to 5.06 went smoothly for me. In the AddNewModule function, I used ContainerSrc to specify the custom container to use. PaneName is the property used to specify which panel the module should be placed in. #Region "From DNN Source --mostly" #Region "Enums" Private Enum ViewPermissionType View = 0 Edit = 1 End Enum #End Region ''' ----------------------------------------------------------------------------- ''' <summary>Adds a New Module to a Pane</summary> ''' <param name="align">The alignment for the Module</param> ''' <param name="desktopModuleId">The Id of the DesktopModule</param> ''' <param name="permissionType">The View Permission Type for the Module</param> ''' <param name="title">The Title for the resulting module</param> ''' <param name="paneName">The pane to add the module to</param> ''' <param name="position">The relative position within the pane for the module</param> ''' ----------------------------------------------------------------------------- Private Function AddNewModule(ByVal TabID As Integer, ByVal title As String, ByVal desktopModuleId As Integer, ByVal paneName As String, ByVal position As Integer, ByVal permissionType As ViewPermissionType, ByVal align As String) As Integer Dim objTabController As New TabController Dim objTabPermissions As TabPermissionCollection = objTabController.GetTab(TabID, PortalId, True).TabPermissions Dim objPermissionController As New PermissionController Dim objModules As New ModuleController Dim objModuleDefinition As ModuleDefinitionInfo Dim objEventLog As New Services.Log.EventLog.EventLogController Dim newModuleID As Integer Dim j As Integer Try Dim desktopModule As DesktopModuleInfo = Nothing If Not DesktopModuleController.GetDesktopModules(PortalSettings.PortalId).TryGetValue(desktopModuleId, desktopModule) Then Throw New ArgumentException("desktopModuleId") End If Catch ex As Exception LogException(ex) End Try Dim UserId As Integer = -1 If Request.IsAuthenticated Then Dim objUserInfo As Users.UserInfo = UserController.GetCurrentUserInfo UserId = objUserInfo.UserID End If For Each objModuleDefinition In ModuleDefinitionController.GetModuleDefinitionsByDesktopModuleID(desktopModuleId).Values Dim objModule As New ModuleInfo objModule.Initialize(PortalSettings.PortalId) objModule.PortalID = PortalSettings.PortalId objModule.TabID = TabID objModule.ModuleOrder = position If title = "" Then objModule.ModuleTitle = objModuleDefinition.FriendlyName Else objModule.ModuleTitle = title End If objModule.PaneName = paneName objModule.ModuleDefID = objModuleDefinition.ModuleDefID If objModuleDefinition.DefaultCacheTime > 0 Then objModule.CacheTime = objModuleDefinition.DefaultCacheTime If Portals.PortalSettings.Current.DefaultModuleId > Null.NullInteger AndAlso Portals.PortalSettings.Current.DefaultTabId > Null.NullInteger Then Dim defaultModule As ModuleInfo = objModules.GetModule(Portals.PortalSettings.Current.DefaultModuleId, Portals.PortalSettings.Current.DefaultTabId, True) If Not defaultModule Is Nothing Then objModule.CacheTime = defaultModule.CacheTime End If End If End If Select Case permissionType Case ViewPermissionType.View objModule.InheritViewPermissions = True Case ViewPermissionType.Edit objModule.InheritViewPermissions = False End Select ' get the default module view permissions Dim arrSystemModuleViewPermissions As ArrayList = objPermissionController.GetPermissionByCodeAndKey("SYSTEM_MODULE_DEFINITION", "VIEW") ' get the permissions from the page For Each objTabPermission As TabPermissionInfo In objTabPermissions If objTabPermission.PermissionKey = "VIEW" AndAlso permissionType = ViewPermissionType.View Then 'Don't need to explicitly add View permisisons if "Same As Page" Continue For End If ' get the system module permissions for the permissionkey Dim arrSystemModulePermissions As ArrayList = objPermissionController.GetPermissionByCodeAndKey("SYSTEM_MODULE_DEFINITION", objTabPermission.PermissionKey) ' loop through the system module permissions For j = 0 To arrSystemModulePermissions.Count - 1 ' create the module permission Dim objSystemModulePermission As PermissionInfo objSystemModulePermission = CType(arrSystemModulePermissions(j), PermissionInfo) If objSystemModulePermission.PermissionKey = "VIEW" AndAlso permissionType = ViewPermissionType.Edit AndAlso _ objTabPermission.PermissionKey <> "EDIT" Then 'Only Page Editors get View permissions if "Page Editors Only" Continue For End If Dim objModulePermission As ModulePermissionInfo = AddModulePermission(objModule, _ objSystemModulePermission, _ objTabPermission.RoleID, objTabPermission.UserID, _ objTabPermission.AllowAccess) ' ensure that every EDIT permission which allows access also provides VIEW permission If objModulePermission.PermissionKey = "EDIT" And objModulePermission.AllowAccess Then Dim objModuleViewperm As ModulePermissionInfo = AddModulePermission(objModule, _ CType(arrSystemModuleViewPermissions(0), PermissionInfo), _ objModulePermission.RoleID, objModulePermission.UserID, _ True) End If Next 'Get the custom Module Permissions, Assume that roles with Edit Tab Permissions 'are automatically assigned to the Custom Module Permissions If objTabPermission.PermissionKey = "EDIT" Then Dim arrCustomModulePermissions As ArrayList = objPermissionController.GetPermissionsByModuleDefID(objModule.ModuleDefID) ' loop through the custom module permissions For j = 0 To arrCustomModulePermissions.Count - 1 ' create the module permission Dim objCustomModulePermission As PermissionInfo objCustomModulePermission = CType(arrCustomModulePermissions(j), PermissionInfo) AddModulePermission(objModule, objCustomModulePermission, _ objTabPermission.RoleID, objTabPermission.UserID, _ objTabPermission.AllowAccess) Next End If Next objModule.AllTabs = False objModule.Alignment = align 'apply Custom Container to module objModule.ContainerSrc = CONTAINER_TRANSPARENT_PLAIN newModuleID = objModules.AddModule(objModule) Next Return newModuleID End Function ''' ----------------------------------------------------------------------------- ''' <summary>Adds a Module Permission</summary> ''' <param name="permission">The permission to add</param> ''' <param name="roleId">The Id of the role to add the permission for.</param> ''' ----------------------------------------------------------------------------- Private Function AddModulePermission(ByVal objModule As ModuleInfo, ByVal permission As PermissionInfo, ByVal roleId As Integer, ByVal userId As Integer, ByVal allowAccess As Boolean) As ModulePermissionInfo Dim objModulePermission As New ModulePermissionInfo objModulePermission.ModuleID = objModule.ModuleID objModulePermission.PermissionID = permission.PermissionID objModulePermission.RoleID = roleId objModulePermission.UserID = userId objModulePermission.PermissionKey = permission.PermissionKey objModulePermission.AllowAccess = allowAccess ' add the permission to the collection If Not objModule.ModulePermissions.Contains(objModulePermission) Then objModule.ModulePermissions.Add(objModulePermission) End If Return objModulePermission End Function #End Region

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  • Bumblebee : Module bbswitch could not be loaded

    - by StepTNT
    I've upgraded to 12.04 and I had to switch from Ironhide to the latest version of Bumblebee. Now, when I try to run bumblebeed, I get this error: FATAL: Module bbswitch not found. [ERROR]Module bbswitch could not be loaded (timeout?) [WARN]No switching method available. The dedicated card will always be on. I don't really need to use the secondary VGA on Kubuntu, so I would like to find a way to definitely shut the discrete GPU down and avoid wasting battery. I can't disable it from the BIOS because I use it on Windows. My card is an nvidia 540M.

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  • What CPAN module can send all warnings and errors to a log file?

    - by mithaldu
    I'm maintaining some website code that currently dumps all errors and warnings into the apache log. This is a problem for me as i cannot access that due to lack of root. As such I am looking to redirect all warnings and errors to a specified log file under my control. I'd like to do so without preventing those messages from going through their usual patch of execution. Now, before i spend a lot of time fiddling with the Perl internals and possibly breaking things unawares I thought I'd look for a CPAN module that does this. However, I either do not know how to properly search for this, or I am overlooking something and thus cannot find any module that seems suitable. Thus my asking here: What CPAN module would i use for this task?

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  • Module loaded even though it's blacklisted

    - by isakkarlsson
    System: Ubuntu 11.10 Linux gray 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:50:42 UTC 2011 i686 i686 i386 GNU/Linux I'm trying to blacklist a module (rt2800usb among other) like; $ lsmod | grep rt rt2800usb 22300 0 rt2800lib 48717 1 rt2800usb crc_ccitt 12595 1 rt2800lib rt2x00usb 20092 1 rt2800usb rt2x00lib 48114 3 rt2800usb,rt2800lib,rt2x00usb mac80211 272785 3 rt2800lib,rt2x00usb,rt2x00lib cfg80211 172392 2 rt2x00lib,mac80211 $ emacs /etc/modprobe.d/blacklist.conf and add: blacklist rt2800usb blacklist rt2800lib blacklist rt2x00usb blacklist rt2x00lib and then: $ sudo update-initramfs -u $ sudo reboot But the module are loaded after reboot: $ lsmod | grep rt rt2800usb 22300 0 rt2800lib 48717 1 rt2800usb crc_ccitt 12595 1 rt2800lib rt2x00usb 20092 1 rt2800usb rt2x00lib 48114 3 rt2800usb,rt2800lib,rt2x00usb mac80211 272785 3 rt2800lib,rt2x00usb,rt2x00lib cfg80211 172392 2 rt2x00lib,mac80211 How do I make the changes persist (i.e. have the modules blacklisted) after reboot?

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