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• Unable to open Synaptic manager, unable to install packages, what can I do?

  - by Omkant

  I have installed the sun java6-jdk package but it's not installed completely. After that it's giving an error when I try to install a new package. In terminal when I write "sudo apt-get install [any package name]" I get an error like this: E: could not get lock /var/lib/dpkg/lock -open (11 Resource temporable ) E: Unable to lock the administration directory (/var/lib/dpkg). Also Synaptic package manager is not opening and none of the packages are downloading through any of the methods I know. Please help!

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• How can I unlock a file without closing the file handle?

  - by netvope

  When I'm downloading a video file with Google Chrome, the file is locked and cannot be opened by media players. I want to be able to play the file while it's being downloaded. The video bitrate is lower than my Internet bandwidth so it wouldn't be a problem. Popular unlockers work by closing file handles, which would interrupt the download. How can I remove the read-lock without closing the file handle? Can I replace the read-lock with a write-lock?

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• How do you make the computer locked when the monitor is turned off but power not off in Windows Vista?

  - by Anon

  I have a power management setting (set up through the Control Panel) that turns the monitor off after 5 minutes of idling but keeps the power on all time, if the laptop is connected to power. Under this setting, however, the computer doesn't lock itself and becomes vulnerable to any passerby's attempt to log in if I'm not around. Is there any way to force lock in this situation? (I can force lock if I have the laptop go sleep, but for immediate access I'd like to keep the power on when the laptop is connected to power.)

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• Locking down firmware to keep stolen laptop from being formatted?

  - by Matt Ridge

  On the Mac laptops there are ways through the terminal to lock down the computer so that if someone tries to format the computer they won't be able to do it without the password. This way locks down the firmware. Is there a universal way to do the same thing on a PC? I know there are brands out there such as Samsung, Dell, etc that utilize different fimware types, and in turn will mean that their firmware will be locked down differently. That being said is there a "command code" that will allow you to lock the firmware to keep theives from formatting the hard drive and wiping out your data? I know a person who has time, and knowledge can get any password, and hopefully the person is smart enough to use another password to lock down the firmware, but that's not what I'm asking. I'm asking if it's possible, and if so how? Does the standard PC user require a 3rd party app, or can it be done through the command line? Or Terminal if you are on Linux?

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• How to turn on/turn off leds by terminal?

  - by GarouDan

  I would like turn on/turn off some of my leds running a command on linux. I use Ubuntu 12.04 LTS. I tried xset led named "Scroll Lock" xset led named "Num Lock" xset led 2 (this is the number of Scroll Lock as `xset q` says) xset led 1 but nothing works. Tried setleds +num setleds +scroll but I got a error message saying Error reading the current settings of flags. Maybe you're not on the console? (I was in a terminal). So, how can I perform this?

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• Does CHECK TABLE add read/write locks?

  - by Ztyx

  Hi, Yesterday I ran CHECK TABLE on a table that is read very frequently. I scanned the MySQL documentation for CHECK TABLE for any mentions of "lock" (and found none) and also noticed that only SELECT privilege was required to run the command. I therefor concluded that the command did not do any read lock and was safe to run even in production. Sadly, running the command took 1 minute and 37 seconds and seemed to block all read access. My question is therefor, does CHECK TABLE do any read lock? Any other reason why I experienced a read block on the table? Thanks

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• Suggestions for lightweight, thread-safe scheduler

  - by nirvanai

  I am trying to write a round-robin scheduler for lightweight threads (fibers). It must scale to handle as many concurrently-scheduled fibers as possible. I also need to be able to schedule fibers from threads other than the one the run loop is on, and preferably unschedule them from arbitrary threads as well (though I could live with only being able to unschedule them from the run loop). My current idea is to have a circular doubly-linked list, where each fiber is a node and the scheduler holds a reference to the current node. This is what I have so far: using Interlocked = System.Threading.Interlocked; public class Thread { internal Future current_fiber; public void RunLoop () { while (true) { var fiber = current_fiber; if (fiber == null) { // block the thread until a fiber is scheduled continue; } if (fiber.Fulfilled) fiber.Unschedule (); else fiber.Resume (); //if (current_fiber == fiber) current_fiber = fiber.next; Interlocked.CompareExchange<Future> (ref current_fiber, fiber.next, fiber); } } } public abstract class Future { public bool Fulfilled { get; protected set; } internal Future previous, next; // this must be thread-safe // it inserts this node before thread.current_fiber // (getting the exact position doesn't matter, as long as the // chosen nodes haven't been unscheduled) public void Schedule (Thread thread) { next = this; // maintain circularity, even if this is the only node previous = this; try_again: var current = Interlocked.CompareExchange<Future> (ref thread.current_fiber, this, null); if (current == null) return; var target = current.previous; while (target == null) { // current was unscheduled; negotiate for new current_fiber var potential = current.next; var actual = Interlocked.CompareExchange<Future> (ref thread.current_fiber, potential, current); current = (actual == current? potential : actual); if (current == null) goto try_again; target = current.previous; } // I would lock "current" and "target" at this point. // How can I do this w/o risk of deadlock? next = current; previous = target; target.next = this; current.previous = this; } // this would ideally be thread-safe public void Unschedule () { var prev = previous; if (prev == null) { // already unscheduled return; } previous = null; if (next == this) { next = null; return; } // Again, I would lock "prev" and "next" here // How can I do this w/o risk of deadlock? prev.next = next; next.previous = prev; } public abstract void Resume (); } As you can see, my sticking point is that I cannot ensure the order of locking, so I can't lock more than one node without risking deadlock. Or can I? I don't want to have a global lock on the Thread object, since the amount of lock contention would be extreme. Plus, I don't especially care about insertion position, so if I lock each node separately then Schedule() could use something like Monitor.TryEnter and just keep walking the list until it finds an unlocked node. Overall, I'm not invested in any particular implementation, as long as it meets the requirements I've mentioned. Any ideas would be greatly appreciated. Thanks! P.S- For the curious, this is for an open source project I'm starting at http://github.com/nirvanai/Cirrus

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• SQL SERVER – Concurrency Basics – Guest Post by Vinod Kumar

  - by pinaldave

  This guest post is by Vinod Kumar. Vinod Kumar has worked with SQL Server extensively since joining the industry over a decade ago. Working on various versions from SQL Server 7.0, Oracle 7.3 and other database technologies – he now works with the Microsoft Technology Center (MTC) as a Technology Architect. Let us read the blog post in Vinod’s own voice. Learning is always fun when it comes to SQL Server and learning the basics again can be more fun. I did write about Transaction Logs and recovery over my blogs and the concept of simplifying the basics is a challenge. In the real world we always see checks and queues for a process – say railway reservation, banks, customer supports etc there is a process of line and queue to facilitate everyone. Shorter the queue higher is the efficiency of system (a.k.a higher is the concurrency). Every database does implement this using checks like locking, blocking mechanisms and they implement the standards in a way to facilitate higher concurrency. In this post, let us talk about the topic of Concurrency and what are the various aspects that one needs to know about concurrency inside SQL Server. Let us learn the concepts as one-liners: Concurrency can be defined as the ability of multiple processes to access or change shared data at the same time. The greater the number of concurrent user processes that can be active without interfering with each other, the greater the concurrency of the database system. Concurrency is reduced when a process that is changing data prevents other processes from reading that data or when a process that is reading data prevents other processes from changing that data. Concurrency is also affected when multiple processes are attempting to change the same data simultaneously. Two approaches to managing concurrent data access: Optimistic Concurrency Model Pessimistic Concurrency Model Concurrency Models Pessimistic Concurrency Default behavior: acquire locks to block access to data that another process is using. Assumes that enough data modification operations are in the system that any given read operation is likely affected by a data modification made by another user (assumes conflicts will occur). Avoids conflicts by acquiring a lock on data being read so no other processes can modify that data. Also acquires locks on data being modified so no other processes can access the data for either reading or modifying. Readers block writer, writers block readers and writers. Optimistic Concurrency Assumes that there are sufficiently few conflicting data modification operations in the system that any single transaction is unlikely to modify data that another transaction is modifying. Default behavior of optimistic concurrency is to use row versioning to allow data readers to see the state of the data before the modification occurs. Older versions of the data are saved so a process reading data can see the data as it was when the process started reading and not affected by any changes being made to that data. Processes modifying the data is unaffected by processes reading the data because the reader is accessing a saved version of the data rows. Readers do not block writers and writers do not block readers, but, writers can and will block writers. Transaction Processing A transaction is the basic unit of work in SQL Server. Transaction consists of SQL commands that read and update the database but the update is not considered final until a COMMIT command is issued (at least for an explicit transaction: marked with a BEGIN TRAN and the end is marked by a COMMIT TRAN or ROLLBACK TRAN). Transactions must exhibit all the ACID properties of a transaction. ACID Properties Transaction processing must guarantee the consistency and recoverability of SQL Server databases. Ensures all transactions are performed as a single unit of work regardless of hardware or system failure. A – Atomicity C – Consistency I – Isolation D- Durability Atomicity: Each transaction is treated as all or nothing – it either commits or aborts. Consistency: ensures that a transaction won’t allow the system to arrive at an incorrect logical state – the data must always be logically correct.  Consistency is honored even in the event of a system failure. Isolation: separates concurrent transactions from the updates of other incomplete transactions. SQL Server accomplishes isolation among transactions by locking data or creating row versions. Durability: After a transaction commits, the durability property ensures that the effects of the transaction persist even if a system failure occurs. If a system failure occurs while a transaction is in progress, the transaction is completely undone, leaving no partial effects on data. Transaction Dependencies In addition to supporting all four ACID properties, a transaction might exhibit few other behaviors (known as dependency problems or consistency problems). Lost Updates: Occur when two processes read the same data and both manipulate the data, changing its value and then both try to update the original data to the new value. The second process might overwrite the first update completely. Dirty Reads: Occurs when a process reads uncommitted data. If one process has changed data but not yet committed the change, another process reading the data will read it in an inconsistent state. Non-repeatable Reads: A read is non-repeatable if a process might get different values when reading the same data in two reads within the same transaction. This can happen when another process changes the data in between the reads that the first process is doing. Phantoms: Occurs when membership in a set changes. It occurs if two SELECT operations using the same predicate in the same transaction return a different number of rows. Isolation Levels SQL Server supports 5 isolation levels that control the behavior of read operations. Read Uncommitted All behaviors except for lost updates are possible. Implemented by allowing the read operations to not take any locks, and because of this, it won’t be blocked by conflicting locks acquired by other processes. The process can read data that another process has modified but not yet committed. When using the read uncommitted isolation level and scanning an entire table, SQL Server can decide to do an allocation order scan (in page-number order) instead of a logical order scan (following page pointers). If another process doing concurrent operations changes data and move rows to a new location in the table, the allocation order scan can end up reading the same row twice. Also can happen if you have read a row before it is updated and then an update moves the row to a higher page number than your scan encounters later. Performing an allocation order scan under Read Uncommitted can cause you to miss a row completely – can happen when a row on a high page number that hasn’t been read yet is updated and moved to a lower page number that has already been read. Read Committed Two varieties of read committed isolation: optimistic and pessimistic (default). Ensures that a read never reads data that another application hasn’t committed. If another transaction is updating data and has exclusive locks on data, your transaction will have to wait for the locks to be released. Your transaction must put share locks on data that are visited, which means that data might be unavailable for others to use. A share lock doesn’t prevent others from reading but prevents them from updating. Read committed (snapshot) ensures that an operation never reads uncommitted data, but not by forcing other processes to wait. SQL Server generates a version of the changed row with its previous committed values. Data being changed is still locked but other processes can see the previous versions of the data as it was before the update operation began. Repeatable Read This is a Pessimistic isolation level. Ensures that if a transaction revisits data or a query is reissued the data doesn’t change. That is, issuing the same query twice within a transaction cannot pickup any changes to data values made by another user’s transaction because no changes can be made by other transactions. However, this does allow phantom rows to appear. Preventing non-repeatable read is a desirable safeguard but cost is that all shared locks in a transaction must be held until the completion of the transaction. Snapshot Snapshot Isolation (SI) is an optimistic isolation level. Allows for processes to read older versions of committed data if the current version is locked. Difference between snapshot and read committed has to do with how old the older versions have to be. It’s possible to have two transactions executing simultaneously that give us a result that is not possible in any serial execution. Serializable This is the strongest of the pessimistic isolation level. Adds to repeatable read isolation level by ensuring that if a query is reissued rows were not added in the interim, i.e, phantoms do not appear. Preventing phantoms is another desirable safeguard, but cost of this extra safeguard is similar to that of repeatable read – all shared locks in a transaction must be held until the transaction completes. In addition serializable isolation level requires that you lock data that has been read but also data that doesn’t exist. Ex: if a SELECT returned no rows, you want it to return no. rows when the query is reissued. This is implemented in SQL Server by a special kind of lock called the key-range lock. Key-range locks require that there be an index on the column that defines the range of values. If there is no index on the column, serializable isolation requires a table lock. Gets its name from the fact that running multiple serializable transactions at the same time is equivalent of running them one at a time. Now that we understand the basics of what concurrency is, the subsequent blog posts will try to bring out the basics around locking, blocking, deadlocks because they are the fundamental blocks that make concurrency possible. Now if you are with me – let us continue learning for SQL Server Locking Basics. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: Concurrency

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• Diagnosing xmodmap errors

  - by intuited

  I'm getting this error when trying to use xmodmap to get rid of caps lock: $ xmodmap -e 'clear Lock' X Error of failed request: BadValue (integer parameter out of range for operation) Major opcode of failed request: 118 (X_SetModifierMapping) Value in failed request: 0x17 Serial number of failed request: 8 Current serial number in output stream: 8 I'm running xfce on Maverick "10.10" Meercat. This problem did not occur before I added the Keyboard Layouts applet to a panel; before doing that, I was able to run my xmodmap script to swap Esc and CapsLock: !Remap Caps_Lock as Escape remove Lock = Caps_Lock keysym Caps_Lock = Escape It may be relevant that I chose alt-capslock as the keyboard switch combo in the Keyboard Layouts preferences. I've had a similar problem before, on a different machine, running openbox. On that machine, this problem started when I upgraded to Lucid, and has persisted in Maverick (release 10.10). I reported a bug in xorg. However, it remains unclear whether it's really a problem with xorg, or if I'm just doing something wrong with my configuration. Have other people experienced this problem? Can someone shed some light on what's going on here? It seems there are quite a few layers involved, and I don't understand any of them particularly well, so any information would be helpful. update I've discovered that the problem is specifically triggered by adding the Canada layout variant "Multilingual" (ca-multix). If I instead add the variant "Multilingual (first part)", the problem does not occur. I think this will probably end up being a usable workaround, but I don't yet know what the difference between these variants is. I've filed a freedesktop issue, and am commenting on a related ubuntu issue.

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• Which logs will tell me about the Touchpad and Keyboard locking up?

  - by Sepero

  I have an Asus N53SM laptop that I leave running for several weeks at a time. I never put it in hibernate or suspend, I only close the lid when I'm not using it. After a few days or weeks of running, the touchpad and keyboard will Both lock up (at the same time) for no apparent reason. I could be just surfing the internet when it happens. The touchpad and keyboard seem to only lock up when I'm actively using the laptop (not when idle), which may mean it's related to something I press, but I'm not sure? The touchpad never locks or unlocks when Pressing FN and the designated touchpad lock key (it does not seem to work on Linux). While the touchpad and keyboard are locked, I am able to plug in my USB mouse and successfully use it to control the screen cursor. I can also remotely get into the system with vnc and ssh, everything seems to run fine there as well. No processes appear out of control. It's just the laptops physical touchpad and keyboard that are locking up. How might I go about diagnosing this problem? What system logs to look at? (anything specific to look for in them?) Perhaps I should try reloading some modules? Any thing else I should inspect?

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• Disk space suddenly 100% used?

  - by dannymcc

  I'm trying to identify why, suddenly, 100% of our disk space is in use. I have already rebooted but the issue persists. Here are the outputs of some commands that are showing some strange (for me) results: danny@hydrogen:~$ df -h Filesystem Size Used Avail Use% Mounted on /dev/cciss/c0d0p1 130G 122G 949M 100% / none 1.9G 196K 1.9G 1% /dev none 2.0G 0 2.0G 0% /dev/shm none 2.0G 40K 2.0G 1% /var/run none 2.0G 0 2.0G 0% /var/lock none 2.0G 0 2.0G 0% /lib/init/rw danny@hydrogen:/$ sudo du -chs / du: cannot access `/proc/1662/task/1662/fd/4': No such file or directory du: cannot access `/proc/1662/task/1662/fdinfo/4': No such file or directory du: cannot access `/proc/1662/fd/4': No such file or directory du: cannot access `/proc/1662/fdinfo/4': No such file or directory danny@hydrogen:/$ df Filesystem 1K-blocks Used Available Use% Mounted on /dev/cciss/c0d0p1 135342296 128144108 323104 100% / none 1991336 196 1991140 1% /dev none 1995788 0 1995788 0% /dev/shm none 1995788 40 1995748 1% /var/run none 1995788 0 1995788 0% /var/lock none 1995788 0 1995788 0% /lib/init/rw danny@hydrogen:/$ mount /dev/cciss/c0d0p1 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) none on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /dev type devtmpfs (rw,mode=0755) none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) none on /dev/shm type tmpfs (rw,nosuid,nodev) none on /var/run type tmpfs (rw,nosuid,mode=0755) none on /var/lock type tmpfs (rw,noexec,nosuid,nodev) none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755) danny@hydrogen:/$ sudo du -h --max-depth=1 634M ./premvet_sync 5.6M ./etc 4.0K ./opt 16K ./lost+found 7.4M ./bin 623M ./lib 196K ./dev 0 ./sys 4.0K ./srv 4.0K ./cdrom 8.0K ./media 52K ./tmp ... it hangs for ages here..... The server is running Ubuntu 10.04.4 LTS. System load: 2.85 Temperature: 8 C Usage of /: 94.7% of 129.07GB Processes: 132 Memory usage: 39% Users logged in: 0 Swap usage: 0% IP address for eth0: 192.168.1.124 => / is using 94.7% of 129.07GB I'm struggling to comprehend why this is happening! Any pointers would be appreciated.

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• Diagnosing xmodmap errors

  - by intuited

  I'm getting this error when trying to use xmodmap to get rid of caps lock: $ xmodmap -e 'clear Lock' X Error of failed request: BadValue (integer parameter out of range for operation) Major opcode of failed request: 118 (X_SetModifierMapping) Value in failed request: 0x17 Serial number of failed request: 8 Current serial number in output stream: 8 I'm running xfce on Maverick "10.10" Meercat. This problem did not occur before I added the Keyboard Layouts applet to a panel; before doing that, I was able to run my xmodmap script to swap Esc and CapsLock: !Remap Caps_Lock as Escape remove Lock = Caps_Lock keysym Caps_Lock = Escape It may be relevant that I chose alt-capslock as the keyboard switch combo in the Keyboard Layouts preferences. I've had a similar problem before, on a different machine, running openbox. On that machine, this problem started when I upgraded to Lucid, and has persisted in Maverick (release 10.10). I reported a bug in xorg. However, it remains unclear whether it's really a problem with xorg, or if I'm just doing something wrong with my configuration. Have other people experienced this problem? Can someone shed some light on what's going on here? It seems there are quite a few layers involved, and I don't understand any of them particularly well, so any information would be helpful. update I've discovered that the problem is specifically triggered by adding the Canada layout variant "Multilingual" (ca-multix). If I instead add the variant "Multilingual (first part)", the problem does not occur. I think this will probably end up being a usable workaround, but I don't yet know what the difference between these variants is. I've filed a freedesktop issue, and am commenting on a related ubuntu issue.

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• Session state provider and atomic operations

  - by vtortola

  Hi, I've been thinking about this and it is blowing my mind... How does a session state provider properly works internally? I mean, I tried to write a custom session state provider based on Azure Tables or Blobs, but quickly I realized that because there is no way to ensure an atomic operation or establish a lock, race conditions are suitable to happen when several web servers do operation on that shared information. I know that there is a SQL Server Session State Provider (SQLS-SSP) and people is happy with it, so I guess that it's using some kind of transaction isolation level in order to accomplish some degree of concurrent safety, like checking is the data is lock (a simple column), locking it if not and returning the data in an atomic operation, but is that so? what does happen if the data is lock? does it returns an error? block the call for a while? returns it in read-only fashion? Cloud computing paradigms could be somehow new, but webfarms have been here for a while, so as I'm pretty new on it... do you recommend any good lecture about the topic? Thanks.

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• reinstalling phpmyadmin

  - by explorex

  EDIT:: installed mysql-server but no phpmyadmin (since phpmyadmin was installed before mysql, that resulted an error). How to reinstall phpmyadmin with database (there is no phpmyadmin datbase)? unstalling it and reinstalling it didn't help. i was trying to install phpmyadmin (and zend framework) through synaptic manager but in the middle i was prompted for password i thought it was phpmyadmin password and i proceeded but i got error and i aborted. and then again i tried to reinstall, it reinstalled but i am not getting phpmyadmin. EDIT::The following is invalid so please don't bother apache is running but mysql is not some of it's characteristics are: santosh@explorer:~$ mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) santosh@explorer:~$ sudo apt-get install mysql-server E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? Should i be asking this question here or stackoverflow? UPDATES:: after restarting my computer santosh@explorer:~$ sudo service mysql start [sudo] password for santosh: mysql: unrecognized service UPDATES:: santosh@explorer:~$ sudo apt-get install mysql Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package mysql

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• Ubuntu hangs after replugging the modem

  - by Iftekhar Ahmed Shafi

  I am facing this issue on Ubuntu 12.04, which is for my Wimax modem with beceem chipset. If I replug the device Ubuntu goes in hang state. Its happens very often. If I plug the USB and restart it works most of the time. But it is very annoying to restart every time it hangs. The modem works smoothly in Windows 7. And it used to work OK in Ubuntu 11.10. Jun 13 19:25:54 iftekhar-HP-520-Notebook-PC dbus[1102]: [system] Activating service name='org.freedesktop.UDisks' (using servicehelper) Jun 13 19:25:54 iftekhar-HP-520-Notebook-PC dbus[1102]: [system] Successfully activated service 'org.freedesktop.UDisks' Jun 13 19:26:00 iftekhar-HP-520-Notebook-PC goa[2168]: goa-daemon version 3.4.0 starting [main.c:112, main()] Jun 13 19:26:47 iftekhar-HP-520-Notebook-PC udevd[432]: timeout 'cdrom_id --lock-media /dev/sr1' Jun 13 19:26:48 iftekhar-HP-520-Notebook-PC udevd[432]: timeout: killing 'cdrom_id --lock-media /dev/sr1' [1072] Jun 13 19:26:49 iftekhar-HP-520-Notebook-PC kernel: [ 85.820162] sr 2:0:0:0: Device offlined - not ready after error recovery Jun 13 19:26:49 iftekhar-HP-520-Notebook-PC udevd[432]: timeout: killing 'cdrom_id --lock-media /dev/sr1' [1072] Jun 13 19:27:20 udevd[432]: last message repeated 31 times Jun 13 19:27:25 udevd[432]: last message repeated 4 times What can I do to avoid this hangs and restarts?

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• How to fix out the error dpkg: error processing colord (--configure):

  - by ranjitpradhan

  I have upgrade my ubuntu from 11.10 to 12.04. at last i can found that when i tries to install some packages it shows a error. after reading some blog i tried to fix that error by "sudo dpkg --configure -a". but when i run this command it show another error this Setting up colord (0.1.16-2) ... useradd: cannot lock /etc/passwd; try again later. adduser: `/usr/sbin/useradd -d /var/lib/colord -g colord -s /bin/false -u 115 colord' returned error code 1. Exiting. dpkg: error processing colord (--configure): subprocess installed post-installation script returned error exit status 1 Setting up whoopsie (0.1.32) ... useradd: cannot lock /etc/passwd; try again later. adduser: `/usr/sbin/useradd -d /nonexistent -g whoopsie -s /bin/false -u 115 whoopsie' returned error code 1. Exiting. dpkg: error processing whoopsie (--configure): subprocess installed post-installation script returned error exit status 1 Setting up lightdm (1.2.1-0ubuntu1) ... Adding system user `lightdm' (UID 115) ... Adding new user `lightdm' (UID 115) with group `lightdm' ... useradd: cannot lock /etc/passwd; try again later. adduser: `/usr/sbin/useradd -d /var/lib/lightdm -g lightdm -s /bin/false -u 115 lightdm' returned error code 1. Exiting. dpkg: error processing lightdm (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of ubuntu-desktop: ubuntu-desktop depends on lightdm; however: Package lightdm is not configured yet. dpkg: error processing ubuntu-desktop (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: colord whoopsie lightdm ubuntu-desktop what can i do now ?

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• Broken Package on Update Manager

  - by Widy Graycloud

  I dont know what's wrong with my update manager.. It says that the softwares that I installed was broken. Maybe because I force shutdown my laptop, because Ubuntu wont shutdown,showing up desktop wallpaper but not title bar and launcher, but It won't shut down (+that's another bug). I've just update the broken softwares. the size is 60 to 70 MB.. But It doesn't work. Now I cannot update or install any software from Update Manager or Ubuntu Software Center. Can anybody tellme what's wrong? This is what appears when I use Update Manager I use Ubuntu Software Center, and this message appeared I chose repair and when it update the broken softwares using Ubuntu Software Center. It failed. And show up this message. The problem is I can't update or install any program from Ubuntu Software Center and Device Manager anymore. (I closed allprograms include ubuntu software center,and device manager in this case). Some one helpme? I tried to use apt-get install -f in terminal but it shows message like this: E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?

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• Touchpad and Keyboard both stop working after long uptime

  - by Sepero

  I have an Asus N53SM laptop that I leave running for several weeks at a time. I never put it in hibernate or suspend, I only close the lid when I'm not using it. After a few days or weeks of running, the touchpad and keyboard will Both lock up (at the same time) for no apparent reason. I could be just surfing the internet when it happens. The touchpad and keyboard seem to only lock up when I'm actively using the laptop (not when idle), which may mean it's related to something I press, but I'm not sure? The touchpad never locks or unlocks when Pressing FN and the designated touchpad lock key (it does not seem to work on Linux). While the touchpad and keyboard are locked, I am able to plug in my USB mouse and successfully use it to control the screen cursor. I can also remotely get into the system with vnc and ssh, everything seems to run fine there as well. No processes appear out of control. It's just the laptops physical touchpad and keyboard that are locking up. How might I go about diagnosing this problem? What system logs to look at? (anything specific to look for in them?) Perhaps I should try reloading some modules? Any thing else I should inspect?

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• ????????????3?????

  - by Feng

  ?? ??blog?????oracle????????????,??????????????,??????: ?????????. ???????: ??????????,????????; ????????????,?” ???”??. 1. OS swapping/paging ??????concurrency??????? Oracle?????????, ??latch/mutex???????”?”,??????????????/???(????????????,??????????????????). ????OS??????swapping/paging????,???????????,??latch/mutex???????,????????????hung/slow???. ??swapping/paging??????: a). ???? b). ??????; ?????, ?????????????? c). ?????/????? ????????????????? ???????: Lock SGA, ??SGA(???latch/mutex)???pin???????swapping???. ???SGA??????,????large page(hugepage)??,??latch/mutex??/?????. 2. SGA resizing?????????? ?AMM/ASMM??????????, shared pool?buffer cache?????component????????????,??ora-4031???.??????????,???????resize????????????(?latch/mutex?????)?????, ?????????latch/mutex??. ????shared pool?resize??????,??latch/mutex???????. ?????????:  ?????bug; ???????????,??resize???????????????,???????????. ??bug?fix??????????impact, ???????????. ???????: 1). ??buffer cache?shared pool??(???????????,?????????) 2). ??resize???????16?? alter system set "_memory_broker_stat_interval"=999; Disable AMM/ASMM?????????,?????: ??ora-4031????????????. 3. DDL?????????? ??????????????????. ???????????DDL (??grant, ?????, ????????),???????????SQL?????invalidate?;????????SQL????????????,?????????hard parse ? SQL??????. ??????? “hardparse storm”, latch/mutex????????, ??library cache lock/row cache lock????; ??????????slow/hung. ???????: ???????????DDL ??????????,???????????,?? “????????????3?????"?

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• How to set up dual quadro cards on RHEL 5.5?

  - by Alex J. Roberts

  I have a RHEL 5 workstation with 2 nvidia Quadro FX4500 cards, with one display attached to each card. After doing a clean install of RHEL 5.5, the second display doesnt work (it worked ok in RHEL 5.2). Neither separate X screens nor Xinerama are working. The kernel version is 2.6.18-194.el5 I've tried nvidia drivers 185.18.36 (the ones that i was using on 5.2) and the latest 260.19.36 and neither works. My xorg.conf is as follows: # nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 1.0 (buildmeister@builder58) Fri Aug 14 18:34:43 PDT 2009 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 Screen 1 "Screen1" RightOf "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Files" FontPath "unix/:7100" EndSection Section "ServerFlags" Option "Xinerama" "1" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/input/mice" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from data in "/etc/sysconfig/keyboard" Identifier "Keyboard0" Driver "kbd" Option "XkbLayout" "us" Option "XkbModel" "pc105" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor0" VendorName "Unknown" ModelName "DELL 3007WFP" HorizSync 49.3 - 98.5 VertRefresh 60.0 Option "DPMS" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor1" VendorName "Unknown" ModelName "DELL 3007WFP" HorizSync 49.3 - 98.5 VertRefresh 60.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "Quadro FX 4500" BusID "PCI:10:0:0" EndSection Section "Device" Identifier "Device1" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "Quadro FX 4500" BusID "PCI:129:0:0" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen1" Device "Device1" Monitor "Monitor1" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection And the Xorg Log: X Window System Version 7.1.1 Release Date: 12 May 2006 X Protocol Version 11, Revision 0, Release 7.1.1 Build Operating System: Linux 2.6.18-164.11.1.el5 x86_64 Red Hat, Inc. Current Operating System: Linux blur.svsdsde 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 Build Date: 06 March 2010 Build ID: xorg-x11-server 1.1.1-48.76.el5 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Module Loader present Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Fri Feb 18 09:52:08 2011 (==) Using config file: "/etc/X11/xorg.conf" (==) ServerLayout "Layout0" (**) |-->Screen "Screen0" (0) (**) | |-->Monitor "Monitor0" (**) | |-->Device "Device0" (**) |-->Screen "Screen1" (1) (**) | |-->Monitor "Monitor1" (**) | |-->Device "Device1" (**) |-->Input Device "Keyboard0" (**) |-->Input Device "Mouse0" (**) FontPath set to: unix/:7100 (==) RgbPath set to "/usr/share/X11/rgb" (==) ModulePath set to "/usr/lib64/xorg/modules" (**) Option "Xinerama" "1" (**) Xinerama: enabled (==) Max clients allowed: 512, resource mask: 0xfffff (II) Open ACPI successful (/var/run/acpid.socket) (II) Module ABI versions: X.Org ANSI C Emulation: 0.3 X.Org Video Driver: 1.0 X.Org XInput driver : 0.6 X.Org Server Extension : 0.3 X.Org Font Renderer : 0.5 (II) Loader running on linux (II) LoadModule: "bitmap" (II) Loading /usr/lib64/xorg/modules/fonts/libbitmap.so (II) Module bitmap: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.0.0 Module class: X.Org Font Renderer ABI class: X.Org Font Renderer, version 0.5 (II) Loading font Bitmap (II) LoadModule: "pcidata" (II) Loading /usr/lib64/xorg/modules/libpcidata.so (II) Module pcidata: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.0.0 ABI class: X.Org Video Driver, version 1.0 (++) using VT number 7 (II) PCI: PCI scan (all values are in hex) (II) PCI: 00:00:0: chip 10de,005e card 103c,1500 rev a3 class 05,80,00 hdr 00 (II) PCI: 00:01:0: chip 10de,0051 card 103c,1500 rev a3 class 06,01,00 hdr 80 (II) PCI: 00:01:1: chip 10de,0052 card 103c,1500 rev a2 class 0c,05,00 hdr 80 (II) PCI: 00:02:0: chip 10de,005a card 103c,1500 rev a2 class 0c,03,10 hdr 80 (II) PCI: 00:02:1: chip 10de,005b card 103c,1500 rev a3 class 0c,03,20 hdr 80 (II) PCI: 00:04:0: chip 10de,0059 card 103c,1500 rev a2 class 04,01,00 hdr 00 (II) PCI: 00:06:0: chip 10de,0053 card 103c,1500 rev f2 class 01,01,8a hdr 00 (II) PCI: 00:07:0: chip 10de,0054 card 103c,1500 rev f3 class 01,01,85 hdr 00 (II) PCI: 00:08:0: chip 10de,0055 card 103c,1500 rev f3 class 01,01,85 hdr 00 (II) PCI: 00:09:0: chip 10de,005c card 0000,0000 rev a2 class 06,04,01 hdr 01 (II) PCI: 00:0a:0: chip 10de,0057 card 103c,1500 rev a3 class 06,80,00 hdr 00 (II) PCI: 00:0e:0: chip 10de,005d card 0000,0000 rev a3 class 06,04,00 hdr 01 (II) PCI: 00:18:0: chip 1022,1100 card 0000,0000 rev 00 class 06,00,00 hdr 80 (II) PCI: 00:18:1: chip 1022,1101 card 0000,0000 rev 00 class 06,00,00 hdr 80 (II) PCI: 00:18:2: chip 1022,1102 card 0000,0000 rev 00 class 06,00,00 hdr 80 (II) PCI: 00:18:3: chip 1022,1103 card 0000,0000 rev 00 class 06,00,00 hdr 80 (II) PCI: 00:19:0: chip 1022,1100 card 0000,0000 rev 00 class 06,00,00 hdr 80 (II) PCI: 00:19:1: chip 1022,1101 card 0000,0000 rev 00 class 06,00,00 hdr 80 (II) PCI: 00:19:2: chip 1022,1102 card 0000,0000 rev 00 class 06,00,00 hdr 80 (II) PCI: 00:19:3: chip 1022,1103 card 0000,0000 rev 00 class 06,00,00 hdr 80 (II) PCI: 05:05:0: chip 104c,8023 card 103c,1500 rev 00 class 0c,00,10 hdr 00 (II) PCI: 0a:00:0: chip 10de,009d card 10de,02af rev a1 class 03,00,00 hdr 00 (II) PCI: End of PCI scan (II) PCI-to-ISA bridge: (II) Bus -1: bridge is at (0:1:0), (0,-1,-1), BCTRL: 0x0008 (VGA_EN is set) (II) Subtractive PCI-to-PCI bridge: (II) Bus 5: bridge is at (0:9:0), (0,5,5), BCTRL: 0x0206 (VGA_EN is cleared) (II) Bus 5 non-prefetchable memory range: [0] -1 0 0xf5000000 - 0xf50fffff (0x100000) MX[B] (II) PCI-to-PCI bridge: (II) Bus 10: bridge is at (0:14:0), (0,10,10), BCTRL: 0x000a (VGA_EN is set) (II) Bus 10 I/O range: [0] -1 0 0x00003000 - 0x00003fff (0x1000) IX[B] (II) Bus 10 non-prefetchable memory range: [0] -1 0 0xf3000000 - 0xf4ffffff (0x2000000) MX[B] (II) Bus 10 prefetchable memory range: [0] -1 0 0xc0000000 - 0xcfffffff (0x10000000) MX[B] (II) Host-to-PCI bridge: (II) Bus 0: bridge is at (0:24:0), (0,0,10), BCTRL: 0x0008 (VGA_EN is set) (II) Bus 0 I/O range: [0] -1 0 0x00000000 - 0x0000ffff (0x10000) IX[B] (II) Bus 0 non-prefetchable memory range: [0] -1 0 0x00000000 - 0xffffffff (0x100000000) MX[B] (II) Bus 0 prefetchable memory range: [0] -1 0 0x00000000 - 0xffffffff (0x100000000) MX[B] (--) PCI:*(10:0:0) nVidia Corporation Quadro FX 4500 rev 161, Mem @ 0xf3000000/24, 0xc0000000/28, 0xf4000000/24, I/O @ 0x3000/7 (II) Addressable bus resource ranges are [0] -1 0 0x00000000 - 0xffffffff (0x100000000) MX[B] [1] -1 0 0x00000000 - 0x0000ffff (0x10000) IX[B] (II) OS-reported resource ranges: [0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B) [1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B] [2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B] [3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B] [4] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B] [5] -1 0 0x00000000 - 0x000000ff (0x100) IX[B] (II) Active PCI resource ranges: [0] -1 0 0xf5000000 - 0xf5003fff (0x4000) MX[B] [1] -1 0 0xf5004000 - 0xf50047ff (0x800) MX[B] [...snipped... post too long] [28] -1 0 0x0000fb00 - 0x0000fbff (0x100) IX[B] [29] -1 0 0x00003000 - 0x0000307f (0x80) IX[B](B) (II) Active PCI resource ranges after removing overlaps: [0] -1 0 0xf5000000 - 0xf5003fff (0x4000) MX[B] [1] -1 0 0xf5004000 - 0xf50047ff (0x800) MX[B] [...snipped... post too long] [28] -1 0 0x0000fb00 - 0x0000fbff (0x100) IX[B] [29] -1 0 0x00003000 - 0x0000307f (0x80) IX[B](B) (II) OS-reported resource ranges after removing overlaps with PCI: [0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B) [1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B] [2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B] [3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B] [4] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B] [5] -1 0 0x00000000 - 0x000000ff (0x100) IX[B] (II) All system resource ranges: [0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B) [1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B] [2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B] [3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B] [4] -1 0 0xf5000000 - 0xf5003fff (0x4000) MX[B] [5] -1 0 0xf5004000 - 0xf50047ff (0x800) MX[B] [6] -1 0 0xf5104000 - 0xf5104fff (0x1000) MX[B] [7] -1 0 0xf5103000 - 0xf5103fff (0x1000) MX[B] [8] -1 0 0xf5102000 - 0xf5102fff (0x1000) MX[B] [9] -1 0 0xf5101000 - 0xf5101fff (0x1000) MX[B] [10] -1 0 0xfebf0000 - 0xfebf00ff (0x100) MX[B] [11] -1 0 0xf5100000 - 0xf5100fff (0x1000) MX[B] [12] -1 0 0xf4000000 - 0xf4ffffff (0x1000000) MX[B](B) [13] -1 0 0xc0000000 - 0xcfffffff (0x10000000) MX[B](B) [14] -1 0 0xf3000000 - 0xf3ffffff (0x1000000) MX[B](B) [15] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B] [16] -1 0 0x00000000 - 0x000000ff (0x100) IX[B] [17] -1 0 0x000048f0 - 0x000048f7 (0x8) IX[B] [18] -1 0 0x000048c0 - 0x000048cf (0x10) IX[B] [19] -1 0 0x00004c04 - 0x00004c07 (0x4) IX[B] [20] -1 0 0x000048e8 - 0x000048ef (0x8) IX[B] [21] -1 0 0x00004c00 - 0x00004c03 (0x4) IX[B] [22] -1 0 0x000048e0 - 0x000048e7 (0x8) IX[B] [23] -1 0 0x000048b0 - 0x000048bf (0x10) IX[B] [24] -1 0 0x000048fc - 0x000048ff (0x4) IX[B] [25] -1 0 0x000048d8 - 0x000048df (0x8) IX[B] [26] -1 0 0x000048f8 - 0x000048fb (0x4) IX[B] [27] -1 0 0x000048d0 - 0x000048d7 (0x8) IX[B] [28] -1 0 0x000048a0 - 0x000048af (0x10) IX[B] [29] -1 0 0x00004400 - 0x000044ff (0x100) IX[B] [30] -1 0 0x00004000 - 0x000040ff (0x100) IX[B] [31] -1 0 0x00004840 - 0x0000487f (0x40) IX[B] [32] -1 0 0x00004800 - 0x0000483f (0x40) IX[B] [33] -1 0 0x00004880 - 0x0000489f (0x20) IX[B] [34] -1 0 0x0000fb00 - 0x0000fbff (0x100) IX[B] [35] -1 0 0x00003000 - 0x0000307f (0x80) IX[B](B) (II) LoadModule: "extmod" (II) Loading /usr/lib64/xorg/modules/extensions/libextmod.so (II) Module extmod: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.0.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 0.3 (II) Loading extension SHAPE (II) Loading extension MIT-SUNDRY-NONSTANDARD (II) Loading extension BIG-REQUESTS (II) Loading extension SYNC (II) Loading extension MIT-SCREEN-SAVER (II) Loading extension XC-MISC (II) Loading extension XFree86-VidModeExtension (II) Loading extension XFree86-Misc (II) Loading extension XFree86-DGA (II) Loading extension DPMS (II) Loading extension TOG-CUP (II) Loading extension Extended-Visual-Information (II) Loading extension XVideo (II) Loading extension XVideo-MotionCompensation (II) Loading extension X-Resource (II) LoadModule: "dbe" (II) Loading /usr/lib64/xorg/modules/extensions/libdbe.so (II) Module dbe: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.0.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 0.3 (II) Loading extension DOUBLE-BUFFER (II) LoadModule: "glx" (II) Loading /usr/lib64/xorg/modules/extensions/libglx.so (II) Module glx: vendor="NVIDIA Corporation" compiled for 4.0.2, module version = 1.0.0 Module class: X.Org Server Extension (II) NVIDIA GLX Module 185.18.36 Fri Aug 14 18:27:24 PDT 2009 (II) Loading extension GLX (II) LoadModule: "freetype" (II) Loading /usr/lib64/xorg/modules/fonts/libfreetype.so (II) Module freetype: vendor="X.Org Foundation & the After X-TT Project" compiled for 7.1.1, module version = 2.1.0 Module class: X.Org Font Renderer ABI class: X.Org Font Renderer, version 0.5 (II) Loading font FreeType (II) LoadModule: "type1" (II) Loading /usr/lib64/xorg/modules/fonts/libtype1.so (II) Module type1: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.0.2 Module class: X.Org Font Renderer ABI class: X.Org Font Renderer, version 0.5 (II) Loading font Type1 (II) LoadModule: "record" (II) Loading /usr/lib64/xorg/modules/extensions/librecord.so (II) Module record: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.13.0 Module class: X.Org Server Extension ABI class: X.Org Server Extension, version 0.3 (II) Loading extension RECORD (II) LoadModule: "dri" (II) Loading /usr/lib64/xorg/modules/extensions/libdri.so (II) Module dri: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.0.0 ABI class: X.Org Server Extension, version 0.3 (II) Loading sub module "drm" (II) LoadModule: "drm" (II) Loading /usr/lib64/xorg/modules/linux/libdrm.so (II) Module drm: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.0.0 ABI class: X.Org Server Extension, version 0.3 (II) Loading extension XFree86-DRI (II) LoadModule: "nvidia" (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so (II) Module nvidia: vendor="NVIDIA Corporation" compiled for 4.0.2, module version = 1.0.0 Module class: X.Org Video Driver (II) LoadModule: "kbd" (II) Loading /usr/lib64/xorg/modules/input/kbd_drv.so (II) Module kbd: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.1.0 Module class: X.Org XInput Driver ABI class: X.Org XInput driver, version 0.6 (II) LoadModule: "mouse" (II) Loading /usr/lib64/xorg/modules/input/mouse_drv.so (II) Module mouse: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.1.1 Module class: X.Org XInput Driver ABI class: X.Org XInput driver, version 0.6 (II) NVIDIA dlloader X Driver 185.18.36 Fri Aug 14 17:51:02 PDT 2009 (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs (II) Primary Device is: PCI 0a:00:0 (--) Chipset NVIDIA GPU found (II) Loading sub module "fb" (II) LoadModule: "fb" (II) Loading /usr/lib64/xorg/modules/libfb.so (II) Module fb: vendor="X.Org Foundation" compiled for 7.1.1, module version = 1.0.0 ABI class: X.Org ANSI C Emulation, version 0.3 (II) Loading sub module "wfb" (II) LoadModule: "wfb" (II) Loading /usr/lib64/xorg/modules/libwfb.so (II) Module wfb: vendor="NVIDIA Corporation" compiled for 7.1.99.2, module version = 1.0.0 (II) Loading sub module "ramdac" (II) LoadModule: "ramdac" (II) Loading /usr/lib64/xorg/modules/libramdac.so (II) Module ramdac: vendor="X.Org Foundation" compiled for 7.1.1, module version = 0.1.0 ABI class: X.Org Video Driver, version 1.0 (II) resource ranges after xf86ClaimFixedResources() call: [0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B) [1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B] [2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B] [3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B] [4] -1 0 0xf5000000 - 0xf5003fff (0x4000) MX[B] [5] -1 0 0xf5004000 - 0xf50047ff (0x800) MX[B] [6] -1 0 0xf5104000 - 0xf5104fff (0x1000) MX[B] [7] -1 0 0xf5103000 - 0xf5103fff (0x1000) MX[B] [8] -1 0 0xf5102000 - 0xf5102fff (0x1000) MX[B] [9] -1 0 0xf5101000 - 0xf5101fff (0x1000) MX[B] [10] -1 0 0xfebf0000 - 0xfebf00ff (0x100) MX[B] [11] -1 0 0xf5100000 - 0xf5100fff (0x1000) MX[B] [12] -1 0 0xf4000000 - 0xf4ffffff (0x1000000) MX[B](B) [13] -1 0 0xc0000000 - 0xcfffffff (0x10000000) MX[B](B) [14] -1 0 0xf3000000 - 0xf3ffffff (0x1000000) MX[B](B) [15] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B] [16] -1 0 0x00000000 - 0x000000ff (0x100) IX[B] [17] -1 0 0x000048f0 - 0x000048f7 (0x8) IX[B] [18] -1 0 0x000048c0 - 0x000048cf (0x10) IX[B] [19] -1 0 0x00004c04 - 0x00004c07 (0x4) IX[B] [20] -1 0 0x000048e8 - 0x000048ef (0x8) IX[B] [21] -1 0 0x00004c00 - 0x00004c03 (0x4) IX[B] [22] -1 0 0x000048e0 - 0x000048e7 (0x8) IX[B] [23] -1 0 0x000048b0 - 0x000048bf (0x10) IX[B] [24] -1 0 0x000048fc - 0x000048ff (0x4) IX[B] [25] -1 0 0x000048d8 - 0x000048df (0x8) IX[B] [26] -1 0 0x000048f8 - 0x000048fb (0x4) IX[B] [27] -1 0 0x000048d0 - 0x000048d7 (0x8) IX[B] [28] -1 0 0x000048a0 - 0x000048af (0x10) IX[B] [29] -1 0 0x00004400 - 0x000044ff (0x100) IX[B] [30] -1 0 0x00004000 - 0x000040ff (0x100) IX[B] [31] -1 0 0x00004840 - 0x0000487f (0x40) IX[B] [32] -1 0 0x00004800 - 0x0000483f (0x40) IX[B] [33] -1 0 0x00004880 - 0x0000489f (0x20) IX[B] [34] -1 0 0x0000fb00 - 0x0000fbff (0x100) IX[B] [35] -1 0 0x00003000 - 0x0000307f (0x80) IX[B](B) (II) resource ranges after probing: [0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B) [1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B] [2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B] [3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B] [4] -1 0 0xf5000000 - 0xf5003fff (0x4000) MX[B] [5] -1 0 0xf5004000 - 0xf50047ff (0x800) MX[B] [6] -1 0 0xf5104000 - 0xf5104fff (0x1000) MX[B] [7] -1 0 0xf5103000 - 0xf5103fff (0x1000) MX[B] [8] -1 0 0xf5102000 - 0xf5102fff (0x1000) MX[B] [9] -1 0 0xf5101000 - 0xf5101fff (0x1000) MX[B] [10] -1 0 0xfebf0000 - 0xfebf00ff (0x100) MX[B] [11] -1 0 0xf5100000 - 0xf5100fff (0x1000) MX[B] [12] -1 0 0xf4000000 - 0xf4ffffff (0x1000000) MX[B](B) [13] -1 0 0xc0000000 - 0xcfffffff (0x10000000) MX[B](B) [14] -1 0 0xf3000000 - 0xf3ffffff (0x1000000) MX[B](B) [15] 0 0 0x000a0000 - 0x000affff (0x10000) MS[B] [16] 0 0 0x000b0000 - 0x000b7fff (0x8000) MS[B] [17] 0 0 0x000b8000 - 0x000bffff (0x8000) MS[B] [18] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B] [19] -1 0 0x00000000 - 0x000000ff (0x100) IX[B] [20] -1 0 0x000048f0 - 0x000048f7 (0x8) IX[B] [21] -1 0 0x000048c0 - 0x000048cf (0x10) IX[B] [22] -1 0 0x00004c04 - 0x00004c07 (0x4) IX[B] [23] -1 0 0x000048e8 - 0x000048ef (0x8) IX[B] [24] -1 0 0x00004c00 - 0x00004c03 (0x4) IX[B] [25] -1 0 0x000048e0 - 0x000048e7 (0x8) IX[B] [26] -1 0 0x000048b0 - 0x000048bf (0x10) IX[B] [27] -1 0 0x000048fc - 0x000048ff (0x4) IX[B] [28] -1 0 0x000048d8 - 0x000048df (0x8) IX[B] [29] -1 0 0x000048f8 - 0x000048fb (0x4) IX[B] [30] -1 0 0x000048d0 - 0x000048d7 (0x8) IX[B] [31] -1 0 0x000048a0 - 0x000048af (0x10) IX[B] [32] -1 0 0x00004400 - 0x000044ff (0x100) IX[B] [33] -1 0 0x00004000 - 0x000040ff (0x100) IX[B] [34] -1 0 0x00004840 - 0x0000487f (0x40) IX[B] [35] -1 0 0x00004800 - 0x0000483f (0x40) IX[B] [36] -1 0 0x00004880 - 0x0000489f (0x20) IX[B] [37] -1 0 0x0000fb00 - 0x0000fbff (0x100) IX[B] [38] -1 0 0x00003000 - 0x0000307f (0x80) IX[B](B) [39] 0 0 0x000003b0 - 0x000003bb (0xc) IS[B] [40] 0 0 0x000003c0 - 0x000003df (0x20) IS[B] (II) Setting vga for screen 0. (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32 (==) NVIDIA(0): RGB weight 888 (==) NVIDIA(0): Default visual is TrueColor (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0) (**) NVIDIA(0): Option "TwinView" "0" (**) NVIDIA(0): Option "MetaModes" "nvidia-auto-select +0+0" (**) NVIDIA(0): Enabling RENDER acceleration (II) NVIDIA(0): Support for GLX with the Damage and Composite X extensions is (II) NVIDIA(0): enabled. (II) NVIDIA(0): NVIDIA GPU Quadro FX 4500 (G70GL) at PCI:10:0:0 (GPU-0) (--) NVIDIA(0): Memory: 524288 kBytes (--) NVIDIA(0): VideoBIOS: 05.70.02.41.01 (II) NVIDIA(0): Detected PCI Express Link width: 16X (--) NVIDIA(0): Interlaced video modes are supported on this GPU (--) NVIDIA(0): Connected display device(s) on Quadro FX 4500 at PCI:10:0:0: (--) NVIDIA(0): DELL 3007WFP (DFP-0) (--) NVIDIA(0): DELL 3007WFP (DFP-0): 310.0 MHz maximum pixel clock (--) NVIDIA(0): DELL 3007WFP (DFP-0): Internal Dual Link TMDS (II) NVIDIA(0): Assigned Display Device: DFP-0 (II) NVIDIA(0): Validated modes: (II) NVIDIA(0): "nvidia-auto-select+0+0" (II) NVIDIA(0): Virtual screen size determined to be 2560 x 1600 (--) NVIDIA(0): DPI set to (101, 101); computed from "UseEdidDpi" X config (--) NVIDIA(0): option (WW) NVIDIA(0): UBB is incompatible with the Composite extension. Disabling (WW) NVIDIA(0): UBB. (==) NVIDIA(0): Disabling 32-bit ARGB GLX visuals. (--) Depth 24 pixmap format is 32 bpp (II) do I need RAC? No, I don't. (II) resource ranges after preInit: [0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B) [1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B] [2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B] [3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B] [4] -1 0 0xf5000000 - 0xf5003fff (0x4000) MX[B] [5] -1 0 0xf5004000 - 0xf50047ff (0x800) MX[B] [6] -1 0 0xf5104000 - 0xf5104fff (0x1000) MX[B] [7] -1 0 0xf5103000 - 0xf5103fff (0x1000) MX[B] [8] -1 0 0xf5102000 - 0xf5102fff (0x1000) MX[B] [9] -1 0 0xf5101000 - 0xf5101fff (0x1000) MX[B] [10] -1 0 0xfebf0000 - 0xfebf00ff (0x100) MX[B] [11] -1 0 0xf5100000 - 0xf5100fff (0x1000) MX[B] [12] -1 0 0xf4000000 - 0xf4ffffff (0x1000000) MX[B](B) [13] -1 0 0xc0000000 - 0xcfffffff (0x10000000) MX[B](B) [14] -1 0 0xf3000000 - 0xf3ffffff (0x1000000) MX[B](B) [15] 0 0 0x000a0000 - 0x000affff (0x10000) MS[B] [16] 0 0 0x000b0000 - 0x000b7fff (0x8000) MS[B] [17] 0 0 0x000b8000 - 0x000bffff (0x8000) MS[B] [18] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B] [19] -1 0 0x00000000 - 0x000000ff (0x100) IX[B] [20] -1 0 0x000048f0 - 0x000048f7 (0x8) IX[B] [21] -1 0 0x000048c0 - 0x000048cf (0x10) IX[B] [22] -1 0 0x00004c04 - 0x00004c07 (0x4) IX[B] [23] -1 0 0x000048e8 - 0x000048ef (0x8) IX[B] [24] -1 0 0x00004c00 - 0x00004c03 (0x4) IX[B] [25] -1 0 0x000048e0 - 0x000048e7 (0x8) IX[B] [26] -1 0 0x000048b0 - 0x000048bf (0x10) IX[B] [27] -1 0 0x000048fc - 0x000048ff (0x4) IX[B] [28] -1 0 0x000048d8 - 0x000048df (0x8) IX[B] [29] -1 0 0x000048f8 - 0x000048fb (0x4) IX[B] [30] -1 0 0x000048d0 - 0x000048d7 (0x8) IX[B] [31] -1 0 0x000048a0 - 0x000048af (0x10) IX[B] [32] -1 0 0x00004400 - 0x000044ff (0x100) IX[B] [33] -1 0 0x00004000 - 0x000040ff (0x100) IX[B] [34] -1 0 0x00004840 - 0x0000487f (0x40) IX[B] [35] -1 0 0x00004800 - 0x0000483f (0x40) IX[B] [36] -1 0 0x00004880 - 0x0000489f (0x20) IX[B] [37] -1 0 0x0000fb00 - 0x0000fbff (0x100) IX[B] [38] -1 0 0x00003000 - 0x0000307f (0x80) IX[B](B) [39] 0 0 0x000003b0 - 0x000003bb (0xc) IS[B] [40] 0 0 0x000003c0 - 0x000003df (0x20) IS[B] (II) NVIDIA(GPU-1): NVIDIA GPU Quadro FX 4500 (G70GL) at PCI:129:0:0 (GPU-1) (--) NVIDIA(GPU-1): Memory: 524288 kBytes (--) NVIDIA(GPU-1): VideoBIOS: 05.70.02.41.01 (II) NVIDIA(GPU-1): Detected PCI Express Link width: 16X (--) NVIDIA(GPU-1): Interlaced video modes are supported on this GPU (--) NVIDIA(GPU-1): Connected display device(s) on Quadro FX 4500 at PCI:129:0:0: (--) NVIDIA(GPU-1): DELL 3007WFP (DFP-0) (--) NVIDIA(GPU-1): DELL 3007WFP (DFP-0): 310.0 MHz maximum pixel clock (--) NVIDIA(GPU-1): DELL 3007WFP (DFP-0): Internal Dual Link TMDS (II) NVIDIA(0): Initialized GPU GART. (II) NVIDIA(0): Setting mode "nvidia-auto-select+0+0" (II) Loading extension NV-GLX (II) NVIDIA(0): NVIDIA 3D Acceleration Architecture Initialized (==) NVIDIA(0): Disabling shared memory pixmaps (II) NVIDIA(0): Using the NVIDIA 2D acceleration architecture (==) NVIDIA(0): Backing store disabled (==) NVIDIA(0): Silken mouse enabled (**) Option "dpms" (**) NVIDIA(0): DPMS enabled (II) Loading extension NV-CONTROL (==) RandR enabled (II) Setting vga for screen 0. (II) Initializing built-in extension MIT-SHM (II) Initializing built-in extension XInputExtension (II) Initializing built-in extension XTEST (II) Initializing built-in extension XKEYBOARD (II) Initializing built-in extension XC-APPGROUP (II) Initializing built-in extension SECURITY (II) Initializing built-in extension XINERAMA (II) Initializing built-in extension XFIXES (II) Initializing built-in extension XFree86-Bigfont (II) Initializing built-in extension RENDER (II) Initializing built-in extension RANDR (II) Initializing built-in extension COMPOSITE (II) Initializing built-in extension DAMAGE (II) Initializing built-in extension XEVIE (II) Initializing extension GLX (WW) Disabling Composite since Xinerama is enabled (**) Option "CoreKeyboard" (**) Keyboard0: Core Keyboard (**) Option "Protocol" "standard" (**) Keyboard0: Protocol: standard (**) Option "AutoRepeat" "500 30" (**) Option "XkbRules" "xorg" (**) Keyboard0: XkbRules: "xorg" (**) Option "XkbModel" "pc105" (**) Keyboard0: XkbModel: "pc105" (**) Option "XkbLayout" "us" (**) Keyboard0: XkbLayout: "us" (**) Option "CustomKeycodes" "off" (**) Keyboard0: CustomKeycodes disabled (**) Option "Protocol" "auto" (**) Mouse0: Device: "/dev/input/mice" (**) Mouse0: Protocol: "auto" (**) Option "CorePointer" (**) Mouse0: Core Pointer (**) Option "Device" "/dev/input/mice" (**) Option "Emulate3Buttons" "no" (**) Option "ZAxisMapping" "4 5" (**) Mouse0: ZAxisMapping: buttons 4 and 5 (**) Mouse0: Buttons: 9 (II) XINPUT: Adding extended input device "Mouse0" (type: MOUSE) (II) XINPUT: Adding extended input device "Keyboard0" (type: KEYBOARD) (--) Mouse0: PnP-detected protocol: "ExplorerPS/2" (II) Mouse0: ps2EnableDataReporting: succeeded (II) Open ACPI successful (/var/run/acpid.socket) (II) NVIDIA(0): Setting mode "nvidia-auto-select+0+0" (II) Mouse0: ps2EnableDataReporting: succeeded (the snipped part can be changed if necessary) Any help at all would be appreciated. Cheers, Alex

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• Python: nonblocking read from stdout of threaded subprocess

  - by sberry2A

  I have a script (worker.py) that prints unbuffered output in the form... 1 2 3 . . . n where n is some constant number of iterations a loop in this script will make. In another script (service_controller.py) I start a number of threads, each of which starts a subprocess using subprocess.Popen(stdout=subprocess.PIPE, ...); Now, in my main thread (service_controller.py) I want to read the output of each thread's worker.py subprocess and use it to calculate an estimate for the time remaining till completion. I have all of the logic working that reads the stdout from worker.py and determines the last printed number. The problem is that I can not figure out how to do this in a non-blocking way. If I read a constant bufsize then each read will end up waiting for the same data from each of the workers. I have tried numerous ways including using fcntl, select + os.read, etc. What is my best option here? I can post my source if needed, but I figured the explanation describes the problem well enough. Thanks for any help here. EDIT Adding sample code I have a worker that starts a subprocess. class WorkerThread(threading.Thread): def __init__(self): self.completed = 0 self.process = None self.lock = threading.RLock() threading.Thread.__init__(self) def run(self): cmd = ["/path/to/script", "arg1", "arg2"] self.process = subprocess.Popen(cmd, stdout=subprocess.PIPE, bufsize=1, shell=False) #flags = fcntl.fcntl(self.process.stdout, fcntl.F_GETFL) #fcntl.fcntl(self.process.stdout.fileno(), fcntl.F_SETFL, flags | os.O_NONBLOCK) def get_completed(self): self.lock.acquire(); fd = select.select([self.process.stdout.fileno()], [], [], 5)[0] if fd: self.data += os.read(fd, 1) try: self.completed = int(self.data.split("\n")[-2]) except IndexError: pass self.lock.release() return self.completed I then have a ThreadManager. class ThreadManager(): def __init__(self): self.pool = [] self.running = [] self.lock = threading.Lock() def clean_pool(self, pool): for worker in [x for x in pool is not x.isAlive()]: worker.join() pool.remove(worker) del worker return pool def run(self, concurrent=5): while len(self.running) + len(self.pool) > 0: self.clean_pool(self.running) n = min(max(concurrent - len(self.running), 0), len(self.pool)) if n > 0: for worker in self.pool[0:n]: worker.start() self.running.extend(self.pool[0:n]) del self.pool[0:n] time.sleep(.01) for worker in self.running + self.pool: worker.join() and some code to run it. threadManager = ThreadManager() for i in xrange(0, 5): threadManager.pool.append(WorkerThread()) threadManager.run() I have stripped out a log of the other code in hopes to try to pinpoint the issue.

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• Unlocking a mutex from a different thread (C++)

  - by dan

  I'm using the C++ boost::thread library, which in my case means I'm using pthreads. Officially, a mutex must be unlocked from the same thread which locks it, and I want the effect of being able to lock in one thread and then unlock in another. There are many ways to accomplish this. One possibility would be to write a new mutex class which allows this behavior. For example: class inter_thread_mutex{ bool locked; boost::mutex mx; boost::condition_variable cv; public: void lock(){ boost::unique_lock<boost::mutex> lck(mx); while(locked) cv.wait(lck); locked=true; } void unlock(){ { boost::lock_guard<boost::mutex> lck(mx); if(!locked) error(); locked=false; } cv.notify_one(); } // bool try_lock(); void error(); etc. } I should point out that the above code doesn't guarantee FIFO access, since if one thread calls lock() while another calls unlock(), this first thread may acquire the lock ahead of other threads which are waiting. (Come to think of it, the boost::thread documentation doesn't appear to make any explicit scheduling guarantees for either mutexes or condition variables). But let's just ignore that (and any other bugs) for now. My question is, if I decide to go this route, would I be able to use such a mutex as a model for the boost Lockable concept. For example, would anything go wrong if I use a boost::unique_lock< inter_thread_mutex for RAII-style access, and then pass this lock to boost::condition_variable_any.wait(), etc. On one hand I don't see why not. On the other hand, "I don't see why not" is usually a very bad way of determining whether something will work. The reason I ask is that if it turns out that I have to write wrapper classes for RAII locks and condition variables and whatever else, then I'd rather just find some other way to achieve the same effect.

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• Zero code coverage with cobertura 1.9.2 but tests are working

  - by eraonel

  I run the code coverage target: <junit fork="yes" dir="${basedir}" failureProperty="test.failed"> <!-- Note the classpath order: instrumented classes are before the original (uninstrumented) classes. This is important. --> <classpath path="${instrumented.dir}" /> <classpath path="${classes.dir}" /> <classpath refid="classpath" /> <!-- The instrumented classes reference classes used by the Cobertura runtime, so Cobertura and its dependencies must be on your classpath. --> <classpath refid="cobertura.classpath" /> <formatter type="xml" /> <!--<test name="${testcase}" todir="${reports.xml.dir}" if="testcase" />--> <batchtest fork="yes" todir="${reports.xml.dir}"> <fileset dir="${classes.dir}"> <include name="**/generated/AllTests.class" /> </fileset> </batchtest> </junit> <junitreport todir="${reports.xml.dir}"> <fileset dir="${reports.xml.dir}"> <include name="TEST-*.xml" /> </fileset> <report format="frames" todir="${reports.html.dir}" /> </junitreport> Then I get the following output ( when using fork="true"): java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at net.sourceforge.cobertura.util.FileLocker.lock(FileLocker.java:124) at net.sourceforge.cobertura.coveragedata.ProjectData.saveGlobalProjectData(ProjectData.java:331) at net.sourceforge.cobertura.coveragedata.SaveTimer.run(SaveTimer.java:31) at java.lang.Thread.run(Thread.java:595) Caused by: java.io.IOException: No locks available at sun.nio.ch.FileChannelImpl.lock0(Native Method) at sun.nio.ch.FileChannelImpl.lock(FileChannelImpl.java:784) at java.nio.channels.FileChannel.lock(FileChannel.java:865) ... 8 more --------------------------------------- Unable to get lock on /vobs/rnc/rrt/roam2/roamSs/RoamMao_swb/RoamMao_bldu/ant_build/cobertura.ser.lock: null This is known to happen on Linux kernel 2.6.20. Make sure cobertura.jar is in the root classpath of the jvm process running the instrumented code. If the instrumented code is running in a web server, this means cobertura.jar should be in the web server's lib directory. Don't put multiple copies of cobertura.jar in different WEB-INF/lib directories. Only one classloader should load cobertura. It should be the root classloader. I am using Ant 1.7.0 and cobertura 1.9.2. Any ideas why there is no coverage? Test run ok as I see in my target. I have tried to switch java versions ( 1.5.0_06 and 1.6.0_10) but no difference.

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• Dependency Injection in ASP.NET Web API using Autofac

  - by shiju

  In this post, I will demonstrate how to use Dependency Injection in ASP.NET Web API using Autofac in an ASP.NET MVC 4 app. The new ASP.NET Web API is a great framework for building HTTP services. The Autofac IoC container provides the better integration with ASP.NET Web API for applying dependency injection. The NuGet package Autofac.WebApi provides the  Dependency Injection support for ASP.NET Web API services. Using Autofac in ASP.NET Web API The following command in the Package Manager console will install Autofac.WebApi package into your ASP.NET Web API application. PM > Install-Package Autofac.WebApi The following code block imports the necessary namespaces for using Autofact.WebApi using Autofac; using Autofac.Integration.WebApi; .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } The following code in the Bootstrapper class configures the Autofac. 1: public static class Bootstrapper 2: { 3: public static void Run() 4: { 5: SetAutofacWebAPI(); 6: } 7: private static void SetAutofacWebAPI() 8: { 9: var configuration = GlobalConfiguration.Configuration; 10: var builder = new ContainerBuilder(); 11: // Configure the container 12: builder.ConfigureWebApi(configuration); 13: // Register API controllers using assembly scanning. 14: builder.RegisterApiControllers(Assembly.GetExecutingAssembly()); 15: builder.RegisterType<DefaultCommandBus>().As<ICommandBus>() 16: .InstancePerApiRequest(); 17: builder.RegisterType<UnitOfWork>().As<IUnitOfWork>() 18: .InstancePerApiRequest(); 19: builder.RegisterType<DatabaseFactory>().As<IDatabaseFactory>() 20: .InstancePerApiRequest(); 21: builder.RegisterAssemblyTypes(typeof(CategoryRepository) 22: .Assembly).Where(t => t.Name.EndsWith("Repository")) 23: .AsImplementedInterfaces().InstancePerApiRequest(); 24: var services = Assembly.Load("EFMVC.Domain"); 25: builder.RegisterAssemblyTypes(services) 26: .AsClosedTypesOf(typeof(ICommandHandler<>)) 27: .InstancePerApiRequest(); 28: builder.RegisterAssemblyTypes(services) 29: .AsClosedTypesOf(typeof(IValidationHandler<>)) 30: .InstancePerApiRequest(); 31: var container = builder.Build(); 32: // Set the WebApi dependency resolver. 33: var resolver = new AutofacWebApiDependencyResolver(container); 34: configuration.ServiceResolver.SetResolver(resolver); 35: } 36: } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } The RegisterApiControllers method will scan the given assembly and register the all ApiController classes. This method will look for types that derive from IHttpController with name convention end with “Controller”. The InstancePerApiRequest method specifies the life time of the component for once per API controller invocation. The GlobalConfiguration.Configuration provides a ServiceResolver class which can be use set dependency resolver for ASP.NET Web API. In our example, we are using AutofacWebApiDependencyResolver class provided by Autofac.WebApi to set the dependency resolver. The Run method of Bootstrapper class is calling from Application_Start method of Global.asax.cs. 1: protected void Application_Start() 2: { 3: AreaRegistration.RegisterAllAreas(); 4: RegisterGlobalFilters(GlobalFilters.Filters); 5: RegisterRoutes(RouteTable.Routes); 6: BundleTable.Bundles.RegisterTemplateBundles(); 7: //Call Autofac DI configurations 8: Bootstrapper.Run(); 9: } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } Autofac.Mvc4 The Autofac framework’s integration with ASP.NET MVC has updated for ASP.NET MVC 4. The NuGet package Autofac.Mvc4 provides the dependency injection support for ASP.NET MVC 4. There is not any syntax change between Autofac.Mvc3 and Autofac.Mvc4 Source Code I have updated my EFMVC app with Autofac.WebApi for applying dependency injection for it’s ASP.NET Web API services. EFMVC app also updated to Autofac.Mvc4 for it’s ASP.NET MVC 4 web app. The above code sample is taken from the EFMVC app. You can download the source code of EFMVC app from http://efmvc.codeplex.com/

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• Display System Information on Your Desktop with Desktop Info

  - by Asian Angel

  Do you like to monitor your system but do not want a complicated app to do it with? If you love simplicity and easy configuration then join us as we look at Desktop Info. Desktop Info in Action Desktop Info comes in a zip file format so you will need to unzip the app, place it into an appropriate “Program Files Folder”, and create a shortcut. Do NOT delete the “Read Me File”…this will be extremely useful to you when you make changes to the “Configuration File”. Once you have everything set up you are ready to start Desktop Info up. This is the default layout and set of listings displayed when you start Desktop Info up for the first time. The font colors will be a mix of colors as seen here and the font size will perhaps be a bit small but those are very easy to change if desired. You can access the “Context Menu” directly over the “information area”…so no need to look for it in the “System Tray”. Notice that you can easily access that important “Read Me File” from here… The full contents of the configuration file (.ini file) are displayed here so that you can see exactly what kind of information can be displayed using the default listings. The first section is “Options”…you will most likely want to increase the font size while you are here. Then “Items”… If you are unhappy with any of the font colors in the “information area” this is where you can make the changes. You can turn information display items on or off here. And finally “Files, Registry, & Event Logs”. Here is our displayed information after a few tweaks in the configuration file. Very nice. Conclusion If you have been looking for a system information app that is simple and easy to set up then you should definitely give Desktop Info a try. Links Download Desktop Info Similar Articles Productive Geek Tips Ask the Readers: What are Your Computer’s Hardware Specs?Allow Remote Control To Your Desktop On UbuntuHow To Get Detailed Information About Your PCGet CPU / System Load Average on Ubuntu LinuxEnable Remote Desktop (VNC) on Kubuntu TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Test Drive Windows 7 Online Download Wallpapers From National Geographic Site Spyware Blaster v4.3 Yes, it’s Patch Tuesday Generate Stunning Tag Clouds With Tagxedo Install, Remove and HIDE Fonts in Windows 7

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