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• Listing lines from just one file in DIFF

  - by justintime

  I would like to get (GNU)DIFF to printout only lines that are different in one file. So given ==> diffa.txt <== line1 line2 - in a only line3 line4 changed line5 ==> diffb.txt <== line1 line3 line4 changed in b line5 line6 in b only i would like diff --someoption diffa.txt diffb.txt to produce line2 - in a only line4 changed The following looks as though it should be helpful but it is a bit cryptic : --GTYPE-group-format=GFMT Similar, but format GTYPE input groups with GFMT. --line-format=LFMT Similar, but format all input lines with LFMT. --LTYPE-line-format=LFMT Similar, but format LTYPE input lines with LFMT. LTYPE is `old', `new', or `unchanged'. GTYPE is LTYPE or `changed'. GFMT may contain: %< lines from FILE1 %> lines from FILE2

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• mdadm raid5 recover double disk failure - with a twist (drive order)

  - by Peter Bos

  Let me acknowledge first off that I have made mistakes, and that I have a backup for most but not all of the data on this RAID. I still have hope of recovering the rest of the data. I don't have the kind of money to take the drives to a recovery expert company. Mistake #0, not having a 100% backup. I know. I have a mdadm RAID5 system of 4x3TB. Drives /dev/sd[b-e], all with one partition /dev/sd[b-e]1. I'm aware that RAID5 on very large drives is risky, yet I did it anyway. Recent events The RAID become degraded after a two drive failure. One drive [/dev/sdc] is really gone, the other [/dev/sde] came back up after a power cycle, but was not automatically re-added to the RAID. So I was left with a 4 device RAID with only 2 active drives [/dev/sdb and /dev/sdd]. Mistake #1, not using dd copies of the drives for restoring the RAID. I did not have the drives or the time. Mistake #2, not making a backup of the superblock and mdadm -E of the remaining drives. Recovery attempt I reassembled the RAID in degraded mode with mdadm --assemble --force /dev/md0, using /dev/sd[bde]1. I could then access my data. I replaced /dev/sdc with a spare; empty; identical drive. I removed the old /dev/sdc1 from the RAID mdadm --fail /dev/md0 /dev/sdc1 Mistake #3, not doing this before replacing the drive I then partitioned the new /dev/sdc and added it to the RAID. mdadm --add /dev/md0 /dev/sdc1 It then began to restore the RAID. ETA 300 mins. I followed the process via /proc/mdstat to 2% and then went to do other stuff. Checking the result Several hours (but less then 300 mins) later, I checked the process. It had stopped due to a read error on /dev/sde1. Here is where the trouble really starts I then removed /dev/sde1 from the RAID and re-added it. I can't remember why I did this; it was late. mdadm --manage /dev/md0 --remove /dev/sde1 mdadm --manage /dev/md0 --add /dev/sde1 However, /dev/sde1 was now marked as spare. So I decided to recreate the whole array using --assume-clean using what I thought was the right order, and with /dev/sdc1 missing. mdadm --create /dev/md0 --assume-clean -l5 -n4 /dev/sdb1 missing /dev/sdd1 /dev/sde1 That worked, but the filesystem was not recognized while trying to mount. (It should have been EXT4). Device order I then checked a recent backup I had of /proc/mdstat, and I found the drive order. md0 : active raid5 sdb1[0] sde1[4] sdd1[2] sdc1[1] 8790402048 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/4] [UUUU] I then remembered this RAID had suffered a drive loss about a year ago, and recovered from it by replacing the faulty drive with a spare one. That may have scrambled the device order a bit...so there was no drive [3] but only [0],[1],[2], and [4]. I tried to find the drive order with the Permute_array script: https://raid.wiki.kernel.org/index.php/Permute_array.pl but that did not find the right order. Questions I now have two main questions: I screwed up all the superblocks on the drives, but only gave: mdadm --create --assume-clean commands (so I should not have overwritten the data itself on /dev/sd[bde]1. Am I right that in theory the RAID can be restored [assuming for a moment that /dev/sde1 is ok] if I just find the right device order? Is it important that /dev/sde1 be given the device number [4] in the RAID? When I create it with mdadm --create /dev/md0 --assume-clean -l5 -n4 \ /dev/sdb1 missing /dev/sdd1 /dev/sde1 it is assigned the number [3]. I wonder if that is relevant to the calculation of the parity blocks. If it turns out to be important, how can I recreate the array with /dev/sdb1[0] missing[1] /dev/sdd1[2] /dev/sde1[4]? If I could get that to work I could start it in degraded mode and add the new drive /dev/sdc1 and let it resync again. It's OK if you would like to point out to me that this may not have been the best course of action, but you'll find that I realized this. It would be great if anyone has any suggestions.

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• Getting a TV Capture Card working

  - by Benny Hallett

  I'm new to Linux, and am trying to get my Capture Card working on 11.04. The only command that I know to run to find out any information is lspci, which tells me that I have 02:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 04) I've looked at using Me TV, but haven't worked out how to configure it for my card, or what I need to do to get it running. I'm not fussed on what software I use to run the Capture Card, but I've currently got only Me TV installed. Edit: When I run tvtime, I get the following errors: videoinput: Cannot open capture device /dev/video0: No such file or directory mixer: find error: Success mixer: Can't open mixer default, mixer volume and mute unavailable. mixer: Can't open device default/Line, mixer volume and mute unavailable. Segmentation fault

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• Bitbucket SSH and iptables

  - by Astaz3l

  I'm a newbie in iptables to be honest. I have some basic rules. Everything is blocked by default. iptables -t filter -F iptables -t filter -X iptables -t filter -P INPUT DROP iptables -t filter -P FORWARD DROP iptables -t filter -P OUTPUT DROP iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT iptables -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT ...some rules for http, ftp etc... iptables -t filter -A OUTPUT -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -t filter -A INPUT -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT With the last two lines i'm trying to open the access for ssh so i can connect to bitbucket. When i try to connect to bitbucket: ssh -Tv [email protected] I got the error - connection timed out. But when I disable iptables i can connect without any problems. What am i missing? Should I add any additional rules?

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• Ubuntu 12.04 taking too much time to boot

  - by adarshdinesh

  Ubuntu 12.04 is taking much time for booting, Here is the system kernel message while booting .It is showing that some anacron was killed ,why ? and how to fix the problem ? [ 2.241047] scsi6 : usb-storage 2-1.6:1.0 [ 2.241501] usbcore: registered new interface driver usb-storage [ 2.241895] USB Mass Storage support registered. [ 3.240670] scsi 6:0:0:0: Direct-Access Multiple Card Reader 1.00 PQ: 0 ANSI: 0 [ 3.241791] sd 6:0:0:0: Attached scsi generic sg2 type 0 [ 3.243083] sd 6:0:0:0: [sdb] Attached SCSI removable disk [ 12.568641] Adding 4037904k swap on /dev/sda3. Priority:-1 extents:1 across:4037904k [ 12.615014] udevd[462]: starting version 175 [ 12.651334] mei: module is from the staging directory, the quality is unknown, you have been warned. [ 12.655283] [drm] Initialized drm 1.1.0 20060810 ................... [ 14.118369] init: alsa-restore main process (982) terminated with status 19 [ 14.252595] init: anacron main process (1033) killed by TERM signal [ 14.285763] HDMI status: Codec=3 Pin=5 Presence_Detect=0 ELD_Valid=0 [ 14.285841] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8 [ 14.285925] input: HDA Intel PCH Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9 [ 14.285991] input: HDA Intel PCH Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10 [ 14.615073] init: plymouth-stop pre-start process (1222) terminated with status 1 [ 16.447287] wlan0: authenticate with c0:8a:de:7c:60:e8 (try 1) [ 16.448858] wlan0: authenticated [ 16.453405] wlan0: associate with c0:8a:de:7c:60:e8 (try 1) [ 16.456392] wlan0: RX AssocResp from c0:8a:de:7c:60:e8 (capab=0x431 status=0 aid=2) [ 16.456398] wlan0: associated [ 16.457014] ieee80211 phy0: brcms_ops_bss_info_changed: qos enabled: true (implement) [ 16.457017] ieee80211 phy0: brcmsmac: brcms_ops_bss_info_changed: associated [ 16.457019] ieee80211 phy0: changing basic rates failed: -22 [ 16.457021] ieee80211 phy0: brcms_ops_bss_info_changed: arp filtering: enabled true, count 0 (implement) [ 16.457226] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 16.654196] ieee80211 phy0: brcms_ops_bss_info_changed: arp filtering: enabled true, count 1 (implement) [ 17.823565] ieee80211 phy0: wl0: brcms_c_d11hdrs_mac80211: txop exceeded phylen 180/256 dur 1946/1504 [ 18.220865] ieee80211 phy0: brcms_ops_bss_info_changed: qos enabled: true (implement) [ 26.881422] wlan0: no IPv6 routers present [ 68.228293] ieee80211 phy0: brcms_ops_bss_info_changed: qos enabled: true (implement) [ 73.240133] ieee80211 phy0: brcms_ops_bss_info_changed: qos enabled: true (implement) [ 76.574490] ieee80211 phy0: brcms_ops_bss_info_changed: qos enabled: true (implement) [ 102.180006] ieee80211 phy0: brcms_ops_bss_info_changed: qos enabled: true (implement) [ 103.100984] ieee80211 phy0: brcms_ops_bss_info_changed: qos enabled: true (implement) [ 124.171624] ieee80211 phy0: brcms_ops_bss_info_changed: qos enabled: true (implement)

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• Semantic Form Markup for Yes or No Questions - Or Should I Tell my Designers to Bugger Off?

  - by sholsinger

  I frequently receive mock-ups of HTML forms with the following prototype: Some long winded yes or no question?   (o) Yes   ( ) No The (o) and ( ) in this prototype represent radio buttons. My personal view is that if the question has only a true or false value then it should be a check box. That said, I have seen this sort of "layout" from almost every designer I've ever worked with. If I were not to question their decision, or question the client's decision, I'd probably mark it up like this: <p class="pseudo_label">Some long winded yes or no question?</p> <input type="radio" name="the_question" id="the_question_yes" value="1"> <label for="the_question_yes" class="after_radio">Yes</label> <input type="radio" name="the_question" id="the_question_no" value="0"> <label for="the_question_no" class="after_radio">No</label> I really don't want to do that. I want to push back and convince them that this should really be a check box and not two radio buttons. But my question is, if I can't convince them – you're welcome to help me try – how should I code that original design requirement such that it is semantic and at least understandable for screen reader users? If I were able to convince my tormentors to change their minds, I would likely code it in the following fashion: <label for="the_question">Some long winded yes or no question?</label> <input type="checkbox" name="the_question" id="the_question" value="1"> What do you think about this issue? Should I push back? Possibly more importantly is either way semantically correct?

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• Sony VAIO is booting directly into Windows without showing grub

  - by Rohan Dhruva

  I bought a new Sony Vaio S series laptop. It uses Insyde H2O BIOS EFI, and trying to install Linux on it is driving me crazy. root@kubuntu:~# parted /dev/sda print Model: ATA Hitachi HTS72756 (scsi) Disk /dev/sda: 640GB Sector size (logical/physical): 512B/4096B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 274MB 273MB fat32 EFI system partition hidden 2 274MB 20.8GB 20.6GB ntfs Basic data partition hidden, diag 3 20.8GB 21.1GB 273MB fat32 EFI system partition boot 4 21.1GB 21.3GB 134MB Microsoft reserved partition msftres 5 21.3GB 342GB 320GB ntfs Basic data partition 6 342GB 358GB 16.1GB ext4 Basic data partition 7 358GB 374GB 16.1GB ntfs Basic data partition 8 374GB 640GB 266GB ntfs Basic data partition What is surprising is that there are 2 EFI system partitions on the disk. The sda2 partition is a 20gb recovery partition which loads windows with a basic recovery interface. This is accessible by pressing the "ASSIST" button as opposed to the normal power button. I presume that the sda1 EFI System Partition (ESP) loads into this recovery. The sda3 ESP has more fleshed out entries for Microsoft Windows, which actually goes into Windows 7 (as confirmed by bcdedit.exe on Windows). Ubuntu is installed on sda6, and while installation I chose sda3 as my boot partition. The installer correctly created a sda3/EFI/ubuntu/grubx64.efi application. The real problem: for the life of me, I can't set it to be the default! I tried creating a sda3/startup.nsh which called grubx64.efi, but it didn't help -- on rebooting, the system still boots into windows. I tried using efibootmgr, and that shows as it it worked: root@kubuntu:~# efibootmgr BootCurrent: 0000 BootOrder: 0000,0001 Boot0000* EFI USB Device Boot0001* Windows Boot Manager root@kubuntu:~# efibootmgr --create --gpt --disk /dev/sda --part 3 --write-signature --label "GRUB2" --loader "\\EFI\\ubuntu\\grubx64.efi" BootCurrent: 0000 BootOrder: 0002,0000,0001 Boot0000* EFI USB Device Boot0001* Windows Boot Manager Boot0002* GRUB2 root@kubuntu:~# efibootmgr BootCurrent: 0000 BootOrder: 0002,0000,0001 Boot0000* EFI USB Device Boot0001* Windows Boot Manager Boot0002* GRUB2 However, on rebooting, as you guessed, the machine rebooted directly back into Windows. The only things I can think of are: The sda1 partition is somehow being used Overwrite /EFI/Boot/bootx64.efi and /EFI/Microsoft/Boot/bootmgfw.efi with grubx64.efi [but this seems really radical]. Can anyone please help me out? Thanks -- any help is greatly appreciated, as this issue is driving me crazy!

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• Configure IPv6 on your Linux system (Ubuntu)

  After the presentation on IPv6 at the first event of the Emtel Knowledge Series and some recent discussion on social media networks with other geeks and Linux interested IT people here in Mauritius, I thought that I should give it a try (finally) and tweak my local network infrastructure. Honestly, I have been to busy with contractual project work and it never really occurred to me to set up IPv6 in my LAN. Well, the following paragraphs are going to shed some light on those aspects of modern computer and network technology. This is the first article in a series on IPv6 configuration: Configure IPv6 on your Linux system DHCPv6: Provide IPv6 information in your local network Enabling DNS for IPv6 infrastructure Accessing your web server via IPv6 Piece of advice: This is based on my findings on the internet while reading other people's helpful articles and going through a couple of man-pages on my local system. Let's embrace IPv6 The basic configuration on Linux is actually very simple as the kernel, operating system, and user-space programs support that protocol natively. If your system is ready to go for IP (aka: IPv4), then you are good to go for anything else. At least, I didn't have to install any additional packages on my system(s). We are going to assign a static IPv6 address to the system. Hence, we have to modify the definition of interfaces and check whether we have an inet6 entry specified. Open your favourite text editor and check the following entries (it should be at least similar to this): $ sudo nano /etc/network/interfaces auto eth0# IPv4 configurationiface eth0 inet static  address 192.168.1.2  network 192.168.1.0  netmask 255.255.255.0  broadcast 192.168.1.255# IPv6 configurationiface eth0 inet6 static  pre-up modprobe ipv6  address 2001:db8:bad:a55::2  netmask 64 Of course, you might have to adjust your interface device (eth0) or you might be interested to have multiple directives for additional devices (eth1, eth2, etc.). The auto instruction takes care that your device is enabled and configured during the booting phase. The use of the pre-up directive depends on your kernel configuration but in most scenarios this might be an optional line. Anyways, it doesn't hurt to have it enabled after all - just to be on the safe side. Next, either restart your network subsystem like so: $ sudo service networking restart Or you might prefer to do it manually with identical parameters, like so: $ sudo ifconfig eth0 inet6 add 2001:db8:bad:a55::2/64 In case that you're logged in remotely into your PC (ie. via ssh), it is highly advised to opt for the second choice and add the device manually. You can check your configuration afterwards with one of the following commands (depends on whether it is installed): $ sudo ifconfig eth0eth0      Link encap:Ethernet  HWaddr 00:21:5a:50:d7:94            inet addr:192.168.160.2  Bcast:192.168.160.255  Mask:255.255.255.0          inet6 addr: fe80::221:5aff:fe50:d794/64 Scope:Link          inet6 addr: 2001:db8:bad:a55::2/64 Scope:Global          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 $ sudo ip -6 address show eth03: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000    inet6 2001:db8:bad:a55::2/64 scope global        valid_lft forever preferred_lft forever    inet6 fe80::221:5aff:fe50:d794/64 scope link        valid_lft forever preferred_lft forever In both cases, it confirms that our network device has been assigned a valid IPv6 address. That's it in general for your setup on one system. But of course, you might be interested to enable more services for IPv6, especially if you're already running a couple of them in your IP network. More details are available on the official Ubuntu Wiki. Continue to configure your network to provide IPv6 address information automatically in your local infrastructure.

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• Focus follows mouse stops working when opening window from launcher and no click to focus

  - by user97600

  This is 12.04 default desktop (unity). I set it to focus follows mouse, and changed the menus to be on the window. This worked for a while, then some unknown even, maybe an upgrade maybe some other setting change caused it to stop working. There are many ways for this behavior to start but one reliable one is to bring a window to the foreground/focus with the launcher. Now the focus is stuck on that window and not just the window but the regions within the window so the close, maximize, minimize and menus do not work. I have to use mouse middle and then mouse right and then focus follows mouse is restored for a bit. The exact details of the mouse action aren't clear, sometimes it seems like just mouse middle helps, sometimes just right some times a desperate sequence of clicks :-( I have tried switching to the gnome desktop and it seems to occur less there but it is not eliminated. I have tried switching mice to an old wired USB mouse. I have tried creating a new account and that has not worked. I have observed "split focus" where to scroll button scrolls one one window but the input goes to another. I go trapped recently where my keyboard input went to libre office calc, but I was selecting the search term in the chrome address window. The selection "grayed" but the keyboard input for the search went to libre. Regions in windows have very confused focus. I have to work hard to get focus on for example the close gliph (X) or the minimize gliph (_).

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• Help me with CDMA usb modem (How to change storage mode to modem mode)

  - by user98698

  My modem isn't in the device list of usb_modeswitch.... so I cannot automatically use the modem on the ubuntu.... I found the way to change the modem from usb storage mode to modem mode and I can use my modem. But I forgot the instructions. I don't know the modem's name. It's chinese modem. But here is vendor/product id ....05 Qualcomm, Inc. Mass Storage Device and I think the target vendor/product id is ..... 05. So help me to change. I don't want to replace modem. pls. Sorry for my english....

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• iPad Coming Soon to a Business Near You

  A guide to using work-related software on the iPad, because you know you’ll be bringing Apple's latest device to the office.

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• iPad Coming Soon to a Business Near You

  A guide to using work-related software on the iPad, because you know you’ll be bringing Apple's latest device to the office.

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• Installing drivers using DPInst

  - by Sreejith S

  You can use DPInst (Driver Package Installer) to install driver files for your device on Windows Operating Systems. DPInst.exe is part of DIFx (Driver Install Framework tools) which comes along with the Windows Driver Kit (WDK). You can find DPInst redistributable inside the redist\DIFx\DPInst folder of the WDK. Using DPInst to install driver: 1)  http://msdn.microsoft.com/en-us/library/ff553601(VS.85).aspx  2) http://blogs.technet.com/svengruenitz/archive/2008/07/02/driver-installation-and-updating-made-easy-dpinst-exe.aspx How to ? 1. Copy dpinst.exe to the folder where the driver files (sys, inf, dll) reside. 2. Optionally create a dpinst.xml file which is used to configure dpinst (http://msdn.microsoft.com/en-us/library/ff550803(VS.85).aspx) If your drivers are not signed you must use the <legacyMode/> tag in dpinst.xml. 3. Run dpinst.exe to install drivers using a 'device driver update' wizard.

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• Force apt to remove all emacs*

  - by wishi

  Hi! I have a bug-problem with the apt-packages of emacs: >>Error occurred processing debian-ispell.el: File error (("Opening input file" "no such file or directory" "/usr/share/emacs23/site-lisp/dictionaries-common/debian-ispell.el")) >>Error occurred processing ispell.el: File error (("Opening input file" "no such file or directory" "/usr/share/emacs23/site-lisp/dictionaries-common/ispell.el")) >>Error occurred processing flyspell.el: File error (("Opening input file" "no such file or directory" "/usr/share/emacs23/site-lisp/dictionaries-common/flyspell.el")) emacs-install: /usr/lib/emacsen-common/packages/install/dictionaries-common emacs23 failed at /usr/lib/emacsen-common/emacs-install line 28, <TSORT> line 30. dpkg: error processing emacs23-lucid (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of emacs: emacs depends on emacs23 | emacs23-lucid | emacs23-nox; however: Package emacs23 is not installed. Package emacs23-lucid which provides emacs23 is not configured yet. Package emacs23-nox which provides emacs23 is not installed. Package emacs23-lucid is not configured yet. Package emacs23-nox is not installed. dpkg: error processing emacs (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: emacs23-lucid emacs E: Sub-process /usr/bin/dpkg returned an error code (1) In fact I would be satisfied with just emacs23-nox, a couple of plugins - from apt. But I can neither --purge nor --purge reinstall, nor remove the packages. It always processes until this certain bug. I did some google-searching, found some stuff on Launchpad suggesting: sudo apt-get install --reinstall --purge emacsen-common But this is the same... so I hope there a way to tell app to just remove everything releated to emacs, and to start from scratch again? Thanks, Marius

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• Error in mounting HDD

  - by Vikramjeet

  I am getting the following error whenever I mount my external HDD. It was working before and then I opted for safely removing the drive. Now its giving me following error Error mounting: mount exited with exit code 13: ntfs_mst_post_read_fixup_warn: magic: 0x43425355 size: 4096 usa_ofs: 8850 usa_count: 65535: Invalid argument Actual VCN (0x800006009000000) of index buffer is different from expected VCN (0x0). Failed to mount '/dev/sdb1': Input/output error NTFS is either inconsistent, or there is a hardware fault, or it's a SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows then reboot into Windows twice. The usage of the /f parameter is very important! If the device is a SoftRAID/FakeRAID then first activate it and mount a different device under the /dev/mapper/ directory, (e.g. /dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation for more details.

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• Wireless not working on Dell XPS 17 after installing 12.04

  - by user60622

  I (linux newbie) have a Dell XPS 17 and tried to install Ubuntu 12.04. After installation all WLAN accesspoints near are detected. But I can not connect (but I am able to connect with other computers as well as with Dell XPS 17 under windows). Outputs: iwconfig lo no wireless extensions. wlan0 IEEE 802.11bg ESSID:"LerchenPoint" Mode:Managed Frequency:2.412 GHz Access Point: 58:6D:8F:A0:2D:58 Bit Rate=1 Mb/s Tx-Power=14 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=70/70 Signal level=-37 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:19 Missed beacon:0 eth0 no wireless extensions. sudo lshw -class network *-network description: Wireless interface product: Centrino Wireless-N 1000 vendor: Intel Corporation physical id: 0 bus info: pci@0000:04:00.0 logical name: wlan0 version: 00 serial: 00:26:c7:99:98:28 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=3.2.0-24-generic firmware=39.31.5.1 build 35138 latency=0 link=no multicast=yes wireless=IEEE 802.11bg resources: irq:50 memory:f0400000-f0401fff *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:0a:00.0 logical name: eth0 version: 06 serial: f0:4d:a2:56:e3:94 size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168e-2.fw ip=192.168.0.123 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s resources: irq:47 ioport:6000(size=256) memory:f0a04000-f0a04fff memory:f0a00000-f0a03fff dmesg | grep iwl [ 10.157531] iwlwifi 0000:04:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 [ 10.157561] iwlwifi 0000:04:00.0: setting latency timer to 64 [ 10.157598] iwlwifi 0000:04:00.0: pci_resource_len = 0x00002000 [ 10.157599] iwlwifi 0000:04:00.0: pci_resource_base = ffffc90011090000 [ 10.157601] iwlwifi 0000:04:00.0: HW Revision ID = 0x0 [ 10.157731] iwlwifi 0000:04:00.0: irq 50 for MSI/MSI-X [ 10.157834] iwlwifi 0000:04:00.0: Detected Intel(R) Centrino(R) Wireless-N 1000 BGN, REV=0x6C [ 10.157976] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S [ 10.179772] iwlwifi 0000:04:00.0: device EEPROM VER=0x15d, CALIB=0x6 [ 10.179775] iwlwifi 0000:04:00.0: Device SKU: 0X50 [ 10.179777] iwlwifi 0000:04:00.0: Valid Tx ant: 0X1, Valid Rx ant: 0X3 [ 10.179796] iwlwifi 0000:04:00.0: Tunable channels: 13 802.11bg, 0 802.11a channels [ 10.574728] iwlwifi 0000:04:00.0: loaded firmware version 39.31.5.1 build 35138 [ 10.726409] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs' [ 19.714132] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S [ 19.777862] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S [ 2251.603089] iwlwifi 0000:04:00.0: PCI INT A disabled [ 2266.578350] iwlwifi 0000:04:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 [ 2266.578399] iwlwifi 0000:04:00.0: setting latency timer to 64 [ 2266.578435] iwlwifi 0000:04:00.0: pci_resource_len = 0x00002000 [ 2266.578437] iwlwifi 0000:04:00.0: pci_resource_base = ffffc90011090000 [ 2266.578439] iwlwifi 0000:04:00.0: HW Revision ID = 0x0 [ 2266.578704] iwlwifi 0000:04:00.0: irq 50 for MSI/MSI-X [ 2266.578808] iwlwifi 0000:04:00.0: Detected Intel(R) Centrino(R) Wireless-N 1000 BGN, REV=0x6C [ 2266.578916] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S [ 2266.600709] iwlwifi 0000:04:00.0: device EEPROM VER=0x15d, CALIB=0x6 [ 2266.600712] iwlwifi 0000:04:00.0: Device SKU: 0X50 [ 2266.600713] iwlwifi 0000:04:00.0: Valid Tx ant: 0X1, Valid Rx ant: 0X3 [ 2266.600727] iwlwifi 0000:04:00.0: Tunable channels: 13 802.11bg, 0 802.11a channels [ 2266.605978] iwlwifi 0000:04:00.0: loaded firmware version 39.31.5.1 build 35138 [ 2266.606331] ieee80211 phy0: Selected rate control algorithm 'iwl-agn-rs' [ 2266.614179] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S [ 2266.681541] iwlwifi 0000:04:00.0: L1 Enabled; Disabling L0S Solutions I tried: rfkill list all 0: dell-wifi: Wireless LAN Soft blocked: no Hard blocked: no 2: phy0: Wireless LAN Soft blocked: no Hard blocked: no echo "options iwlwifi 11n_disable=1" | sudo tee /etc/modprobe.d/iwlwifi.conf options iwlwifi 11n_disable=1 sudo modprobe -rfv iwlwifi WARNING: All config files need .conf: /etc/modprobe.d/blacklist, it will be ignored in a future release. rmmod /lib/modules/3.2.0-24-generic/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko rmmod /lib/modules/3.2.0-24-generic/kernel/net/mac80211/mac80211.ko rmmod /lib/modules/3.2.0-24-generic/kernel/net/wireless/cfg80211.ko sudo modprobe iwlwifi WARNING: All config files need .conf: /etc/modprobe.d/blacklist, it will be ignored in a future release. replacing iwlwifi-1000-5.ucode (current driver) against iwlwifi-1000-3.ucode sudo jockey-gtk: (jockey-gtk:2493): Gtk-CRITICAL **: gtk_icon_set_render_icon_pixbuf: assertion icon_set != NULL' failed (jockey-gtk:2493): Gtk-CRITICAL **: gtk_icon_set_render_icon_pixbuf: assertion icon_set != NULL' failed nothing is listet in "Additional drivers" (german: "Zusätzliche Treiber"). gksudo gedit /etc/modprobe.d/blacklist.conf add "blacklist acer_wmi" Any help would be appreciated very much. Thanks!!

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• Claims-based Identity in .NET 4.5 and Windows 8

  - by Your DisplayName here!

  There was not a ton of new information about WIF and related technologies at Build, but Samuel Devasahayam did a great talk about claims-based access control that contained some very interesting bits of information with regards to future directions. From his slides: Windows 8 Bring existing identity claims model into the Windows platform Domain controller issues groups & claims Claims (user and device) sourced from identity attributes in AD Claims delivered in Kerberos PAC NT Token has a new claims section Enhanced SDDL API’s to work with claims Enhanced user mode CheckAccess API’s to work with claims New ACL-UX Target audits with claims-based expressions WIF & .NET 4.5 WIF is in the box with .NET Framework 4.5 Every principal in .NET 4.5 is a ClaimsPrincipal ADFS 2.1 ADFS 2.1 is available now as a in-box server role in Windows 8 Adds support for issuing device claims from Kerberos ticket

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• Internal Mic Ubuntu 12.04 on Compaq Presario CQ50

  - by Genius FDE

  I have problem with the internal microphone not working on Ubuntu 12.04. It looks like a common problem on most of the laptops running ubuntu 12.04. I tried a lot of possible solutions available online but nothing seems to work! sudo aplay -l gives: **** List of PLAYBACK Hardware Devices **** card 0: NVidia [HDA NVidia], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 By the way, the Laptop has no HDMI port! I've seen the same problem with Sony laptop but the mic was working with too much static noise. Thank you.

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• Ubuntu 12.10 Trackpoint not detected Thinkpad X130e

  - by killerknives

  I just did a fresh install of 12.10 and now only my touchpad works. The trackpoint and Left/Right buttons below the trackpoint do not work. The trackpoint worked fine as of 12.04. I've searched online and there was a hack that said that disabling the touchpad would enable the trackpoint. WRONG! You'll end up having to use the keyboard =/. I don't know what is needed so I'll just dump some stuff. lspci: 00:00.0 Host bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Complex 00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Wrestler [Radeon HD 6310] 00:01.1 Audio device: Advanced Micro Devices [AMD] nee ATI Wrestler HDMI Audio [Radeon HD 6250/6310] 00:05.0 PCI bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Port 00:06.0 PCI bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Port 00:07.0 PCI bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Port 00:11.0 SATA controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] 00:12.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller 00:12.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller 00:13.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller 00:13.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller 00:14.0 SMBus: Advanced Micro Devices [AMD] nee ATI SBx00 SMBus Controller (rev 42) 00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40) 00:14.3 ISA bridge: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 LPC host controller (rev 40) 00:14.4 PCI bridge: Advanced Micro Devices [AMD] nee ATI SBx00 PCI to PCI Bridge (rev 40) 00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 0 (rev 43) 00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 1 00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 2 00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 3 00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 4 00:18.5 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 6 00:18.6 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 5 00:18.7 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 7 01:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01) 02:00.0 Ethernet controller: Atheros Communications Inc. AR8151 v2.0 Gigabit Ethernet (rev c0) I've installged gpointing-device-setting and it only lists the touchpad. No trackpoint. What should I do? What data do you need?

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• Building the Internet of Things – with Microsoft StreamInsight and the Microsoft .Net Micro Framework

  - by Roman Schindlauer

  Fresh from the press – The March 2012 issue of MSDN Magazine features an article about the Internet of Things. It discusses in depth how you can use StreamInsight to process all the data that is continuously produced in typical Internet of Things scenarios. It also gives you an end-to-end perspective on developing Internet of Things solutions in the .NET world, ranging from the .NET Micro Framework application running on the device, the communication between the devices and the server-side all the way to powerful cross-device streaming analytics implemented in StreamInsight LINQ. You can find an online version of the article here. Happy reading! Regards, The StreamInsight Team

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• Supertuxkart not able to start

  - by subeh.sharma

  Was working fine before i played around with NVIDIA drivers and ended up with this problem. I tried running it through the terminal and i see these messages: subsharm@subsharm-ThinkPad-T61:~$ supertuxkart Irrlicht Engine version 1.7.2 Linux 3.0.0-15-generic #25-Ubuntu SMP Mon Jan 2 17:44:42 UTC 2012 x86_64 [FileManager] Data files will be fetched from: '/usr/share/games/supertuxkart/' [IrrDriver] Creating NULL device Irrlicht Engine version 1.7.2 Linux 3.0.0-15-generic #25-Ubuntu SMP Mon Jan 2 17:44:42 UTC 2012 x86_64 [IrrDriver] Trying OpenGL rendering. [IrrDriver] Tring to create device with 32 bits Xlib: extension "GLX" missing on display ":0.0". [IrrDriver Temp Logger] Level 1: No GLX support available. OpenGL driver will not work. [IrrDriver Temp Logger] Level 2: Fatal error, could not get visual. Segmentation fault subsharm@subsharm-ThinkPad-T61:~$ sudo Xorg -configure [sudo] password for subsharm: Fatal server error: Server is already active for display 0 If this server is no longer running, remove /tmp/.X0-lock and start again.

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• Wireless acting weird ubuntu 12.04 LTS

  - by Philip Yeldhos

  I'm kinda new here, so please bear with me. My wireless driver is acting very weird. It shows my router's name, but when it is connecting (after entering the correct password), the icon on the tray is like, refreshing every once in a second, while showing the animation that it is connecting. And after a few seconds, error message come up saying that wireless network is disconnected. I installed the drive through "additional drivers". What info do you need? Somebody please help. philip@philip-HP-Mini-110-3100:~$ sudo iwconfig lo no wireless extensions. eth1 IEEE 802.11 ESSID:"" Mode:Managed Frequency:2.472 GHz Access Point: Not-Associated Bit Rate:72 Mb/s Tx-Power:24 dBm Retry min limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=5/5 Signal level=0 dBm Noise level=-96 dBm Rx invalid nwid:0 Rx invalid crypt:11 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 eth0 no wireless extensions. here's what lspci -v gave me: 02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01) Subsystem: Hewlett-Packard Company Device 1483 Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at 52000000 (64-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [58] Vendor Specific Information: Len=78 <?> Capabilities: [48] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [d0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [13c] Virtual Channel Capabilities: [160] Device Serial Number 00-00-82-ff-ff-3f-e0-2a Capabilities: [16c] Power Budgeting <?> Kernel driver in use: wl Kernel modules: wl, bcma, brcmsmac okay, i removed the driver additional drivers gave me. now, this is what has happened: lsmod gave me: philip@philip-HP-Mini-110-3100:~$ lsmod | grep brc brcmsmac 540875 0 mac80211 436455 1 brcmsmac brcmutil 14675 1 brcmsmac cfg80211 178679 2 brcmsmac,mac80211 crc8 12781 1 brcmsmac cordic 12487 1 brcmsmac and iwconfig gave me: philip@philip-HP-Mini-110-3100:~$ iwconfig lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=19 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:off eth0 no wireless extensions. and lspci -v gave me: 02:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01) Subsystem: Hewlett-Packard Company Device 1483 Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at 52000000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: brcmsmac Kernel modules: bcma, brcmsmac

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• install error wubi 12.10 rev273

  - by Doug

  Keep getting this error when installing wubi 12.10 rev273 11-09 14:16 ERROR TaskList: Error executing command command=C:\Windows\sysnative\bcdedit.exe /set {31400a42-f78f-11e0-9f68-e8757c793044} device partition=F: retval=1 stderr=An error has occurred setting the element data. The request is not supported. stdout= Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in call File "\lib\wubi\backends\win32\backend.py", line 697, in modify_bcd File "\lib\wubi\backends\common\utils.py", line 66, in run_command Exception: Error executing command command=C:\Windows\sysnative\bcdedit.exe /set {31400a42-f78f-11e0-9f68-e8757c793044} device partition=F: retval=1 stderr=An error has occurred setting the element data. The request is not supported. Am trying to install in F drive Doug

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• How to I get the fingerprint reader to work on a HP ProBook 4530?

  - by RofaelEmil

  My laptop (HP ProBook 4530) has a fingerprint device but ubuntu 12.04 didn't configure it automatically. In an effort to get it to work I installed Fingerprint-GUI. It tells me "no device detected". I checked that it is enabled in the BIOS settings. I already tried the following. sudo add-apt-repository ppa:fingerprint/fingerprint-gui sudo apt-get update sudo apt-get install libbsapi policykit-1-fingerprint-gui fingerprint-gui and sudo apt-get install fprint-demo libfprint-dev libfprint0 libpam-fprint aes2501-wy I tried adding Additional drivers

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• Validating allowed characters or validating disallowed characters

  - by Tom

  I've always validated my user input based on a list of valid/allowed characters, rather than a list of invalid/disallowed characters (or simply no validation). It's just a habit I picked up, probably on this site and I've never really questioned it until now. It makes sense if you wish to, say, validate a phone number, or validate an area code, however recently I've realised I'm also validating input such as Bio Text fields, User Comments, etc. for which the input has no solid syntax. The main advantage has always seemed to be: Validating allowed chars reduces the risk of you missing a potentially malicious character, but increases the risk the of you not allowing a character which the user may want to use. The former is more important. But, providing I am correctly preventing SQL Injection (with prepared statements) and also escaping output, is there any need for this extra barrier of protection? It seems to me as if I am just allowing practically every character on the keyboard, and am forgetting to allow some common characters. Is there an accepted practice for this situation? Or am I missing something obvious? Thanks.

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