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  • Blank Screen after inactive time

    - by Hari K T
    I am using Ubuntu 11.04 , on a DELL Vostro 1510. If I am inactive for a certain time, the screen usually gets locked and the login prompt will be there. Yes sometimes I am able to see the login screen and logging in as normal. But sometimes after its locked and when the mouse or keyboard is moved also nothing happens. This is happening for the second time. And its not happening always . I can switch from one terminal to other from the locked screen with Alt + + Ctrl F1 etc . But when I switch to the graphical one with Alt + Ctrl + F7 ( from the locked time ) I can see only a blank screen. I tried once login in ( Alt + Ctrl + F1 ) and trying to startx, but it said something was locked and want to delete the lock and try. So I removed don't remember what exactly it was . But it too was not a success , I was forced to press the powerbutton. Is this a bug ? I saw some but all are happening for switching users. Never experienced after logging out, but this happens only when its locked automatically actually. Update : I strongly feel this is a Bug. As I upgraded to 11.10 , I didn't noticed the same issues. But at some point if any one has an answer, you can post it. I can approve.

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  • Resize a pendrive Linux?

    - by user11239
    I'm running Ubuntu from USB media, which has a drive capacity of 250 GB, all existing as one FAT32 partition. However, when I created the bootable Ubuntu drive, only 4.79 GB were allocated for usage. Rather than put files directly into the /cdrom where the drive is mounted, I want to expand what is listed here in aufs to be at least 200 GB. I'm hopeful that I can do this live. Output of df : Filesystem 1K-blocks Used Available Use% Mounted on aufs 4051904 4050108 0 100% / none 1542852 284 1542568 1% /dev /dev/sdb1 244076800 4901648 239175152 3% /cdrom /dev/loop0 688000 688000 0 100% /rofs none 1547840 1496 1546344 1% /dev/shm tmpfs 1547840 4828 1543012 1% /tmp none 1547840 80 1547760 1% /var/run none 1547840 0 1547840 0% /var/lock none 1547840 0 1547840 0% /lib/init/rw Output of fdisk -l : Disk /dev/sdb: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00083fe4 Device Boot Start End Blocks Id System /dev/sdb1 * 1 30401 244196001 c W95 FAT32 (LBA) So basically what I want to do is get /dev/sdb1 to be entirely, or almost entirely read as aufs. I'm confused over how to do this, as the file systems are all part of /dev/sdb1 on one big partition, rather than separate partitions for separate file systems.

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  • How to retain secondary hard drive mounts at reboot and keep shares?

    - by Tom
    I'm running Ubuntu 12.04. A second hard drive connected to this computer does not mount when the computer boots. Additionally, I have set up the drive to be shared but the share is not retained, the share is lost after each boot. My main system drive and a removable drive mount OK and shares remain between boots. Additional information follows: D2Linux sda1 is the secondary hard drive L-Freeagent sdc1 is the removeable drive Here is the contents of fstab immediately after booting (D2Linux /dev/sda1 not yet mounted): '# /etc/fstab: static file system information. ' '# ' '# Use 'blkid' to print the universally unique identifier for a ' '# device; this may be used with UUID= as a more robust way to name devices ' '# that works even if disks are added and removed. See fstab(5). ' '# ' '# ' proc /proc proc nodev,noexec,nosuid 0 0 '# / was on /dev/sdb1 during installation ' UUID=43d29a82-66b3-40f3-91ed-735a27a60004 / ext4 errors=remount-ro 0 1 '# swap was on /dev/sdb5 during installation UUID=cf8e3351-11d0-487a-8a6e-e499c2e88a10 none swap sw ' 0 0 Here is the output of mount with all drives mounted (I did not restore the share): /dev/sdb1 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs 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) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) gvfs-fuse-daemon on /home/tom/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=tom) /dev/sdc1 on /media/L-Freeagent type ext4 (rw,nosuid,nodev,uhelper=udisks) /dev/sda1 on /media/D2Linux type ext4 (rw,nosuid,nodev,uhelper=udisks) Thank you!

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  • Hide icons encrypted file system partitions in Nautilus

    - by Eddy Pronk
    I've installed Ubuntu 10.04 from the alternate CD. It has an encrypted root and swap partition. The root partition is visible in Nautilus as 'File Syste' icon. There is another icon "216 GB Filesystem". If I click it says: Unable to mount 216 GB Filesystem. /dev/mapper/sda5_crypt is mounted. Then there is another icon "6.1 GB Swap Space". If I click it it says: Unable to mount 6.1 GB Swap Space. Not a mountable file system. How can I hide these last two icons? Partition layout: $ sudo fdisk -l /dev/sda [sudo] password for eddyp: Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xa6e92df4 Device Boot Start End Blocks Id System /dev/sda1 1 11749 94373811 7 HPFS/NTFS /dev/sda2 11871 38914 217219073 5 Extended /dev/sda3 * 11750 11871 976896 83 Linux /dev/sda5 11871 38167 211220480 83 Linux /dev/sda6 38167 38914 5997568 83 Linux Partition table entries are not in disk order Mounted as: $ mount /dev/mapper/sda5_crypt 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) /dev/sda3 on /boot type ext4 (rw) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) gvfs-fuse-daemon on /home/eddyp/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=eddyp) /dev/sda1 on /media/S3A6595D003 type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096,default_permissions)

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  • DVD-drive detected by BIOS and UEFI but not by Ubuntu 12.04

    - by user97591
    I have build a new tower containing; Asrock Z77 extreme4 (motherboard) Core i7 (processor) Hitachi LGE-DMGH 12 L (B) GH15F SATA (SATA DVD-drive) Problem is; BIOS and UEFI has no problems detecting the DVD-drive but it is not detected by Ubuntu 12.04. It is not present in /etc/fstab or /etc/mtab. Below is the contents of fstab and mtab. Thanks for all your help. fstab: # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda1 during installation UUID=f007bc60-da4c-4f36-99a7-77083c5f3654 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=5d59949c-aed9-442a-877d-5abf1ccaadc3 none swap sw 0 0 mtab: /dev/sda1 / ext4 rw,errors=remount-ro 0 0 proc /proc proc rw,noexec,nosuid,nodev 0 0 sysfs /sys sysfs rw,noexec,nosuid,nodev 0 0 none /sys/fs/fuse/connections fusectl rw 0 0 none /sys/kernel/debug debugfs rw 0 0 none /sys/kernel/security securityfs rw 0 0 udev /dev devtmpfs rw,mode=0755 0 0 devpts /dev/pts devpts rw,noexec,nosuid,gid=5,mode=0620 0 0 tmpfs /run tmpfs rw,noexec,nosuid,size=10%,mode=0755 0 0 none /run/lock tmpfs rw,noexec,nosuid,nodev,size=5242880 0 0 none /run/shm tmpfs rw,nosuid,nodev 0 0 binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0 gvfs-fuse-daemon /home/tom/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,user=tom 0 0

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  • How to install .deb file from within preinst script

    - by Ashwin D
    I have my own application packaged using dpkg. The application depends on several deb files which I'm trying to install from within the preinst script of my application. The preinst script checks if a dependent deb file is installed, if not it goes to installt it using the dpkg -i command. This is repeated for all the dependent deb files needed by the main application. When I try to install the main application using dpkg -i, the commands returns failure when trying to execute the preinst script. Below is that error message. dpkg: error: dpkg status database is locked by another process I deleted /var/lib/dpkg/lock file and retried to install the application. But to no avail. If I run the preinst script separately like any other shell script, it runs without any issue. All the deb files will be installed properly. So, the issue is only when this preinst script is being run automatically by the dpkg -i command. I'm lost trying to determine the root cause. If anyone can shed some light on what the real issue might be, their help will be greatly appreciated. Thank you. Ashwin

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  • How to integrate a PHP CMS with paypal so that only users who completed a payment can register and authenticate?

    - by ibiza
    I am currently using a PHP CMS - cmsmadesimple - in order to create a website where services will be sold. I intend to use Paypal 'Buy Now' buttons in order to offer a few packages that will be renewable every 1-month or every 3-months and that grant access to the secure content of the website for a given period of time. Everything is going well so far but I am somewhat at loss for the user registration process as I have a few constraints I would like to use and it would be nice to automate the process if possible. Here are the constraints : User should be able to register to my website and choose a password himself Only users that paid should be able to register Access permissions should be disabled automatically after the service period if the package is not renewed And here is the process which I am thinking of : User clicks 'buy' on my website User is redirected on Paypal and completes the payment The paypal email used to pay should be returned to my server and somehow stored If it is a new email, user needs to register to my website (else if it is a returning customer, the deactivation flag for payment stopped should be removed to give back access) If a user does not renew his subscription, there should be a deactivation flag automatically set to the email used in order to lock access until next payment. Ideally, no human intervention is needed. What is the best way to implement all this? I am a bit at loss. I found this article that explained a few things and even has a nice code snippet, except that I'm not sure where to plug it. Thanks all

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  • 12.10 upgrade broke brightness keys [closed]

    - by Chris Morgan
    I have been running Ubuntu (64-bit) on my HP 6710b laptop (Core 2 Duo with integrated graphics) for several years, and the backlight brightness keys have always worked. Since I upgraded to Ubuntu 12.10 earlier today, those keys do not work any more. The secondary function keys: Fn+F3: sleep; still works (and considerably faster than ever before!) Fn+F8: battery info; still works Fn+F9: reduce brightness; stopped working in 12.10 Fn+F10: increase brightness; stopped working in 12.10 It may also be worth while mentioning that X does not appear to be receiving the brightness events at all, or at least not sending them out further. (This I detected with a key logger I wrote for a Uni project, which uses X's Record extension; it is informed of the sleep and battery info keystrokes, but doesn't receive the brightness ones at all.) In the mean time, I know that I can use the Brightness & Lock settings screen to alter the brightness. (Wow! I can suddenly make my backlight darker than I could before—I can go right down to turning the backlight off, something I couldn't do before... but this model has a fairly dim screen, so I don't expect to use that much, if ever.) How can I get the brightness keys working again? This question is probably strongly related to I can't control my Brightness in HP Compaq 6710s.

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  • Cannot access the filesystems using LiveCD (LVM2,EXT2)

    - by ftkg
    I have to restore the /etc/passwd file I accidentally renamed in my Ubuntu Server, so I booted the machine using a LiveCD. Problem is, the system filesystem does not appear in Nautilus, under 'Devices'. Am I missing anything? ubuntu@ubuntu:~$ sudo fdisk -l Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000956dc Device Boot Start End Blocks Id System /dev/sda1 * 2048 499711 248832 83 Linux /dev/sda2 501758 625141759 312320001 5 Extended /dev/sda5 501760 625141759 312320000 8e Linux LVM ubuntu@ubuntu:~$ mount /cow on / type overlayfs (rw) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) /dev/sr0 on /cdrom type iso9660 (ro,noatime) /dev/loop0 on /rofs type squashfs (ro,noatime) 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) tmpfs on /tmp type tmpfs (rw,nosuid,nodev) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) gvfs-fuse-daemon on /home/ubuntu/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=ubuntu) ubuntu@ubuntu:~$ sudo blkid /dev/loop0: TYPE="squashfs" /dev/sda1: UUID="aad69790-198d-45bc-9ccd-e4cba7456914" TYPE="ext2" /dev/sda5: UUID="wbIDX7-RILL-VtFT-gX15-N1GJ-Yyfg-V8Oe5m" TYPE="LVM2_member" /dev/sr0: LABEL="Ubuntu 12.04 LTS i386" TYPE="iso9660" ubuntu@ubuntu:~$ cat /etc/fstab overlayfs / overlayfs rw 0 0 tmpfs /tmp tmpfs nosuid,nodev 0 0

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  • How to configure Logitech Marble trackball

    - by user27189
    You can configure it using xinput. I tested this in 11.10 and it works very nicely. This selection is from "Ubuntuwiki" Avoid using Hal for this release because it has known issues. Put the following into terminal, using gedit: Edit $HOME/bin/trackball.sh using this command: gedit $HOME/bin/trackball.sh Then paste this into the file: #!/bin/bash dev="Logitech USB Trackball" we="Evdev Wheel Emulation" xinput set-int-prop "$dev" "$we Button" 8 8 xinput set-int-prop "$dev" "$we" 8 1 # xinput set-int-prop "$dev" "$we" 8 1 # xinput set-int-prop "$dev" "$we Button" 8 9 # xinput set-int-prop "$dev" "$we X Axis" 8 6 7 # xinput set-int-prop "$dev" "$we Y Axis" 8 4 5 # xinput set-int-prop "$dev" "Drag Lock Buttons" 8 8 Make sure trackball.sh begins with #!/bin/bash. Make the script executable by running this: chmod +x $HOME/bin/trackball.sh` Add the following lines to $HOME/.bashrc, using gedit $HOME/.bashrc and put this in the file even if it is empty: xmodmap $HOME/.Xmodmap > /dev/null 2>&1 $HOME/bin/trackball.sh Edit $HOME/.Xmodmap using: gedit $HOME/.Xmodmap pointer = 1 8 3 4 5 6 7 9 Log out and back in and viola!

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  • How to re-add RAID-10 dropped drive?

    - by thiesdiggity
    I have a problem that I can't seem to solve. We have a Ubuntu server setup with RAID-10 and two of the drives dropped out of the array. When I try to re-add them using the following command: mdadm --manage --re-add /dev/md2 /dev/sdc1 I get the following error message: mdadm: Cannot open /dev/sdc1: Device or resource busy When I do a "cat /proc/mdstat" I get the following: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [r$ md2 : active raid10 sdb1[0] sdd1[3] 1953519872 blocks 64K chunks 2 near-copies [4/2] [U__U] md1 : active raid1 sda2[0] sdc2[1] 468853696 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdc1[1] 19530688 blocks [2/2] [UU] unused devices: <none> When I run "/sbin/mdadm --detail /dev/md2" I get the following: /dev/md2: Version : 00.90 Creation Time : Mon Sep 5 23:41:13 2011 Raid Level : raid10 Array Size : 1953519872 (1863.02 GiB 2000.40 GB) Used Dev Size : 976759936 (931.51 GiB 1000.20 GB) Raid Devices : 4 Total Devices : 2 Preferred Minor : 2 Persistence : Superblock is persistent Update Time : Thu Oct 25 09:25:08 2012 State : active, degraded Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Layout : near=2, far=1 Chunk Size : 64K UUID : c6d87d27:aeefcb2e:d4453e2e:0b7266cb Events : 0.6688691 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 0 0 1 removed 2 0 0 2 removed 3 8 49 3 active sync /dev/sdd1 Output of df -h is: Filesystem Size Used Avail Use% Mounted on /dev/md1 441G 2.0G 416G 1% / none 32G 236K 32G 1% /dev tmpfs 32G 0 32G 0% /dev/shm none 32G 112K 32G 1% /var/run none 32G 0 32G 0% /var/lock none 32G 0 32G 0% /lib/init/rw tmpfs 64G 215M 63G 1% /mnt/vmware none 441G 2.0G 416G 1% /var/lib/ureadahead/debugfs /dev/mapper/RAID10VG-RAID10LV 1.8T 139G 1.6T 8% /mnt/RAID10 When I do a "fdisk -l" I can see all the drives needed for the RAID-10. The RAID-10 is part of the /dev/mapper, could that be the reason why the device is coming back as busy? Anyone have any suggestions on what I can try to get the drives back into the array? Any help would be greatly appreciated. Thanks!

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  • Am I the only one this anal / obsessive about code? [closed]

    - by Chris
    While writing a shared lock class for sql server for a web app tonight, I found myself writing in the code style below as I always do: private bool acquired; private bool disposed; private TimeSpan timeout; private string connectionString; private Guid instance = Guid.NewGuid(); private Thread autoRenewThread; Basically, whenever I'm declaring a group of variables or writing a sql statement or any coding activity involving multiple related lines, I always try to arrange them where possible so that they form a bell curve (imagine rotating the text 90deg CCW). As an example of something that peeves the hell out of me, consider the following alternative: private bool acquired; private bool disposed; private string connectionString; private Thread autoRenewThread; private Guid instance = Guid.NewGuid(); private TimeSpan timeout; In the above example, declarations are grouped (arbitrarily) so that the primitive types appear at the top. When viewing the code in Visual Studio, primitive types are a different color than non-primitives, so the grouping makes sense visually, if for no other reason. But I don't like it because the right margin is less of an aesthetic curve. I've always chalked this up to being OCD or something, but at least in my mind, the code is "prettier". Am I the only one?

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  • How do I understand the partition table? (I want to start over.)

    - by Sammy Black
    I have Ubuntu 10.04 Lucid installed through wubi on my laptop (it came with Windows 7 preinstalled). This was my first foray into Linux, and I'm here to stay. I have no use for Windows, and yet I must manually choose not to boot into it! Should I shrink the Windows partition to something negligible and grow the Linux one using something like gparted or fdisk, and just be content that everything runs? In that case, I need to understand the filesystems. Which is which? Here's the output of $ df -h: Filesystem Size Used Avail Use% Mounted on /dev/loop0 17G 11G 4.5G 71% / none 1.8G 300K 1.8G 1% /dev none 1.8G 376K 1.8G 1% /dev/shm none 1.8G 316K 1.8G 1% /var/run none 1.8G 0 1.8G 0% /var/lock none 1.8G 0 1.8G 0% /lib/init/rw /dev/sda3 290G 50G 240G 18% /host I would prefer to start over with a clean install of 10.10 Maverick, but I fear what I may lose. Certainly, I will backup my home directory tree (gzip?), but what about various pieces of software that I've acquired from the repositories? Can I keep a record of them? By the way, I asked a similar question over on Ubuntu forums.

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  • How do you save/export changes made in Firebug?

    - by blunders
    Using Firebug to edit CSS, how do I save/export changes made to the CSS? TOOLS: Firefox, Firebug MAJOR UPDATE: If you know of a way to lock the forward/back/refresh on a FireFox tab, please let me know. Otherwise, I've given up on using FireBug/FireDiff as an IDE for CSS, it's nice, but lol... press backspace at the wrong time and ALL your work is gone... funny. So, really like the browser highlighting to CSS/HTML in Firebug. Know any good CSS editors that do this? Really had hope FireBug would work, but for now only see it as being good for ad-hoc inspection and test; meaning using it for what it's made for. UPDATES: @Lèse majesté: Just as an update, "Web Developer add-on" does let you edit CSS, but it does not let you edit/save CSS changes made by Firebug. Meaning you use Firebug to ID and maybe test changes, but it does not let you save the changes from Firebug. Here's a "how to" covering how to use them together: FF + FB + WD @Lèse majesté: Still playing around with FireDiff. It works okay, found one bug already (although I'm just working around it), and there's no "how to" I've been able to find, so I'm just trying every feature and clicking around... (for example, to export a diff you must be over the last item in the list, right click, and select as "Save Diff". The ".diff" is just a text file, no idea why at this point the ext is .diff.

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  • Using Clojure instead of Python for scalability (multi core) reasons, good idea?

    - by Vandell
    After reading http://clojure.org/rationale and other performance comparisons between Clojure and many languages, I started to think that apart from ease of use, I shouldn't be coding in Python anymore, but in Clojure instead. Actually, I began to fill irresponsisble for not learning clojure seeing it's benefits. Does it make sense? Can't I make really efficient use of all cores using a more imperative language like Python, than a lisp dialect or other functional language? It seems that all the benefits of it come from using immutable data, can't I do just that in Python and have all the benefits? I once started to learn some Common Lisp, read and done almost all exercices from a book I borrowod from my university library (I found it to be pretty good, despite it's low popularity on Amazon). But, after a while, I got myself struggling to much to do some simple things. I think there's somethings that are more imperative in their nature, that makes it difficult to model those thins in a functional way, I guess. The thing is, is Python as powerful as Clojure for building applications that takes advantages of this new multi core future? Note that I don't think that using semaphores, lock mechanisms or other similar concurrency mechanism are good alternatives to Clojure 'automatic' parallelization.

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  • Capital D key not working / producing output

    - by Jonathan
    For some inexplicable reason the capital d key on my Ubuntu system is no longer producing output. Hitting caps lock and then d produces a D. I've tried multiple keyboards and the issue is the same. There's nothing bound to Shift+d under System Preferences Keyboard Shortcuts. xev produces the following: shift + a KeyPress event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31268952, (130,-16), root:(1000,525), state 0x10, keycode 62 (keysym 0xffe2, Shift_R), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyPress event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31269376, (130,-16), root:(1000,525), state 0x11, keycode 38 (keysym 0x41, A), same_screen YES, XLookupString gives 1 bytes: (41) "A" XmbLookupString gives 1 bytes: (41) "A" XFilterEvent returns: False KeyRelease event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31269584, (130,-16), root:(1000,525), state 0x11, keycode 38 (keysym 0x41, A), same_screen YES, XLookupString gives 1 bytes: (41) "A" XFilterEvent returns: False KeyRelease event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31269608, (130,-16), root:(1000,525), state 0x11, keycode 62 (keysym 0xffe2, Shift_R), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False shift + d KeyPress event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31102792, (115,-13), root:(985,528), state 0x10, keycode 62 (keysym 0xffe2, Shift_R), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False FocusOut event, serial 36, synthetic NO, window 0x4c00001, mode NotifyGrab, detail NotifyAncestor FocusIn event, serial 36, synthetic NO, window 0x4c00001, mode NotifyUngrab, detail NotifyAncestor KeymapNotify event, serial 36, synthetic NO, window 0x0, keys: 2 0 0 0 0 0 0 64 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 KeyRelease event, serial 36, synthetic NO, window 0x4c00001, root 0x27a, subw 0x0, time 31103104, (115,-13), root:(985,528), state 0x11, keycode 62 (keysym 0xffe2, Shift_R), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False

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  • IRQ Conflicts Causing Video Card and Boot Problems?

    - by sanpatricio
    tl;dr - I have 4 devices sharing 1 IRQ. Is this bad and how do I tell the BIOS to stop it? Background: I have an old Dell GX280 dual Pentium 4 that I (semi) resurrected last weekend with an installation of Ubuntu 12.04. Everything was going fine the first several hours until a problem that plagued me when WinXP was on that machine happened -- it froze. Completely froze. None of the myriad of ways I have found here on askubuntu helped me to regain control except a long-press of the power button to shut it off. Clearly, this wasn't a software/WinXP issue. After much googling, I found that hardware conflicts can often cause this sort of total lock-up and with all the odd blocks of yellow and flecks of color showing on my screen (both WinXP and Ubuntu) I figured my old GeForce 7600 was failing and causing me these odd issues. (A good canned-air dusting of the entire interior fixed the color fleck problem) Again, through much googling and numerous answers found on askubuntu, I somehow stumbled my way onto the lshw command. After going through it, line by line, I found that I have four devices sharing IRQ 16: eth0, wlan0, ide0 (DVD-RW), and my video card. In hindsight, I can recall weird instances of my Ethernet connection to another computer not working when I thought it should. I never full troubleshot those issues so it could be a coincidence. The other thing that has been plaguing me since installing Ubuntu (wasn't there during WinXP) has been periodic moments of my monitor getting no signal from Ubuntu during boot. The first couple days, it would disappear after the Dell boot screen and reappear at Ubuntu login. Now, it disappears after the Dell boot screen and doesn't return at all -- I have to hit F12 where I can load a safe mode version of Ubuntu and get more details like dmesg and lsdev. I also ran memtest86 overnight and woke up to zero errors, so failing RAM is out. Where do I go from here?

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  • Not enough disk space '/' in AWS instance

    - by Sumant
    i am running Ubuntu 11.04 instance for my Web Server on AWS cloud, now i am getting there is no disk space in / partition of my server. df -ah say this Filesystem Size Used Avail Use% Mounted on /dev/xvda1 7.9G 7.8G 97M 99% / proc 0 0 0 - /proc none 0 0 0 - /sys fusectl 0 0 0 - /sys/fs/fuse/connections none 0 0 0 - /sys/kernel/debug none 0 0 0 - /sys/kernel/security none 3.7G 112K 3.7G 1% /dev none 0 0 0 - /dev/pts none 3.7G 0 3.7G 0% /dev/shm none 3.7G 80K 3.7G 1% /var/run none 3.7G 0 3.7G 0% /var/lock /dev/xvdb 414G 16G 377G 4% /mnt Now i have Tried these thing for getting some extra space on / partition Clean up All Log files for Apache. Removed all unnecessary files from server. Home directory Cleanup. But Still I am not getting enough space. This Instance type is m1.large with 8GB EBS. Now i am getting i have enough disk space in /dev/xvdb. Is there a way i can allocate some diskspace to / from /dev/xvdb or Any other Ways. Please suggest me the possible solution for this.Is it possible to use the same /dev/xvdb partition with another instance.

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  • mount issue in ubuntu 12.10

    - by Vipin Ms
    I'm having issue with latest Ubuntu 12.10. Let me make it more clear. I'm having the following partitions in my Laptop. Device Boot Start End Blocks Id System /dev/sda1 2048 39997439 19997696 83 Linux /dev/sda2 * 40001850 81947564 20972857+ 83 Linux /dev/sda3 81947565 123877214 20964825 83 Linux /dev/sda4 123887614 976773119 426442753 5 Extended /dev/sda5 123887616 333602815 104857600 83 Linux /dev/sda6 333604864 543320063 104857600 83 Linux /dev/sda7 543322112 753037311 104857600 83 Linux /dev/sda8 753039360 976773119 111866880 83 Linux I have also two users named "ms" and abc. Here ms is for administrative tasks and abc for my friends. When I mount any drive under "abc" user, I cannot access it under my other user "ms". Same as in the case with "ms" user. I found possible reason behind the issue. When I mount any drive under "abc" user, Ubuntu will try to mount it under "/media/abc/volume_name" instead of "/media/volume_name" . Same as in the case with "ms" user. # df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 19G 11G 7.5G 59% / udev 1.5G 4.0K 1.5G 1% /dev tmpfs 599M 896K 598M 1% /run none 5.0M 0 5.0M 0% /run/lock none 1.5G 620K 1.5G 1% /run/shm none 100M 92K 100M 1% /run/user /dev/sda2 20G 172M 19G 1% /media/abc/TEST /dev/sdb1 466G 353G 114G 76% /media/abc/F088F74288F7063E /dev/sdb2 466G 318G 148G 69% /media/abc/New Volume /dev/sda5 99G 94G 323M 100% /media/abc/Songs /dev/sda6 99G 31G 63G 34% /media/ms/Films Here, you can see that "TEST" was mounted under "/media/abc/TEST". When I try to access the already mounted partition named '/media/abc/TEST" in my "ms" session I'm getting the following error. How to fix this error? Is it a bug? Is there any way to fix this without modifying the underlying file-system structure?

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  • Ask the Readers: How Do You Monitor Your Computer?

    - by Jason Fitzpatrick
    Beneath the shiny case of your computer and GUI of your operating system there’s a lot–CPU utilization, memory access, and disk space consumption to name a few things–you can keep an eye on. How do you keep an eye on resource utilization and more on your computer? Image available as wallpaper here. Whether you’re carefully managing a small pool of RAM, making sure your abundant apps don’t bog down your processor, or you just like having an intimate view of what’s going on in the guts of your computer, we want to hear all about the tools you use to do it. How and why do you monitor your computer? From disk use to case temps, any kind of monitoring is fair game. Sound off in the comments with the how and why of your monitoring arrangement and then be sure to stop back in on Friday for the What You Said roundup to see what tricks and tools your fellow readers are using to keep an eye on their hardware. HTG Explains: How Antivirus Software Works HTG Explains: Why Deleted Files Can Be Recovered and How You Can Prevent It HTG Explains: What Are the Sys Rq, Scroll Lock, and Pause/Break Keys on My Keyboard?

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  • TXPAUSE : polite waiting for hardware transactional memory

    - by Dave
    Classic locks are an appropriate tool to prevent potentially conflicting operations A and B, invoked by different threads, from running at the same time. In a sense the locks cause either A to run before B or vice-versa. Similarly, we can replace the locks with hardware transactional memory, or use transactional lock elision to leverage potential disjoint access parallelism between A and B. But often we want A to wait until B has run. In a Pthreads environment we'd usually use locks in conjunction with condition variables to implement our "wait until" constraint. MONITOR-MWAIT is another way to wait for a memory location to change, but it only allows us to track one cache line and it's only available on x86. There's no similar "wait until" construct for hardware transactions. At the instruction-set level a simple way to express "wait until" in transactions would be to add a new TXPAUSE instruction that could be used within an active hardware transaction. TXPAUSE would politely stall the invoking thread, possibly surrendering or yielding compute resources, while at the same time continuing to track the transaction's address-set. Once a transaction has executed TXPAUSE it can only abort. Ideally that'd happen when some other thread modifies a variable that's in the transaction's read-set or write-set. And since we're aborting all writes would be discarded. In a sense this gives us multi-location MWAIT but with much more flexibility. We could also augment the TXPAUSE with a cycle-count bound to cap the time spent stalled. I should note that we can already enter a tight spin loop in a transaction to wait for updates to address-set to cause an abort. Assuming that the implementation monitors the address-set via cache-coherence probes, by waiting in this fashion we actually communicate via the probes, and not via memory values. That is the updating thread signals the waiter via probes instead of by traditional memory values. But TXPAUSE gives us a polite way to spin.

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  • What to do when 'dpkg --configure -a' fails with too many errors?

    - by rudivonstaden
    During an upgrade from lucid (10.04) to precise (12.04), the X session froze, and I have been trying to recover the upgrade to get a stable system. I have performed the following steps: Used ssh to log in to the stalled system over the network. Checked the contents of the /var/log/dist-upgrade directory. There was no activity on main.log, apt.log or term.log. top showed that process 'precise' was using about 3% CPU, but I could find no evidence that the upgrade process was still doing anything. 'dpkg' did not show up in top, but it came up with pgrep dpkg | xargs ps Killed the 'dpkg' and 'precise' processes Tried to recover the upgrade by running sudo fuser -vki /var/lib/dpkg/lock;sudo dpkg --configure -a. This was partially successful (some packages were configured), but failed with the message Processing was halted because there were too many errors. I ran the same command a few times, and each time some packages were configured but others failed. Tried running sudo apt-get -f install. It fails with similar errors to dpkg. The current situation is that dpkg --configure -a and sudo apt-get -f install fails with two kinds of error: Dependency issues, e.g.: dpkg: dependency problems prevent configuration of cifs-utils: cifs-utils depends on samba-common; however: Package samba-common is not configured yet. dpkg: error processing cifs-utils (--configure): dependency problems - leaving unconfigured Resource conflict, e.g.: debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable Additionally, it seems there's reference to potential boot problems, so I'm not keen to reboot without fixing the install first: dpkg: too many errors, stopping Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-25-generic cryptsetup: WARNING: failed to detect canonical device of /dev/sda1 cryptsetup: WARNING: could not determine root device from /etc/fstab So my question is, how to get a working install when dpkg --configure -a fails?

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  • Get Func-y v2.0

    - by PhubarBaz
    In my last post I talked about using funcs in C# to do async calls in WinForms to free up the main thread for the UI. In that post I demonstrated calling a method and then waiting until the value came back. Today I want to talk about calling a method and then continuing on and handling the results of the async call in a callback.The difference is that in the previous example although the UI would not lock up the user couldn't really do anything while the other thread was working because it was waiting for it to finish. This time I want to allow the user to continue to do other stuff while waiting for the thread to finish.Like before I have a service call I want to make that takes a long time to finish defined in a method called MyServiceCall. We need to define a callback method takes an IAsyncResult parameter.public ServiceCallResult MyServiceCall(int param1)...public int MyCallbackMethod(IAsyncResult ar)...We start the same way by defining a delegate to the service call method using a Func. We need to pass an AsyncCallback object into the BeginInvoke method. This will tell it to call our callback method when MyServiceCall finishes. The second parameter to BeginInvoke is the Func delegate. This will give us access to it in our callback.Func<int, ServiceCallResult> f = MyServiceCall;AsyncCallback callback =   new AsyncCallback(MyCallbackMethod);IAsyncResult async = f.BeginInvoke(23, callback, f); Now let's expand the callback method. The IAsyncResult parameter contains the Func delegate in its AsyncState property. We call EndInvoke on that Func to get the return value.public int MyCallbackMethod(IAsyncResult ar){    Func<int, ServiceCallResult> delegate =        (Func<int, ServiceCallResult>)ar.AsyncState;    ServiceCallResult result = delegate.EndInvoke(ar);}There you have it. Now you don't have to make the user wait for something that isn't critical to the loading of the page.

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  • Option Button in Keyboard Layout > Input Sources is not pressable

    - by user98647
    I would like to set the Caps-lock key as a Compose key, which you do, as far as I remember, by pressing the Options Button in Keyboard Layout Input Sources and then enabling the appropriate option there. That Button is not pressable though since I switched to 12.10. It did work in previous releases of Ubuntu. gnome-control-center puts out these errors, when I click on Keyboard Layout: (gnome-control-center:3645): common-cc-panel-WARNING **: Could not find current language '?\u0003C!\u007f' in the treeview (gnome-control-center:3645): common-cc-panel-WARNING **: locale '"en_US.UTF-8"' isn't valid I'm not sure if the errors are related though, maybe they are related to the "interface switching to chinese bug" which seems surprisingly widespread: Language changed to Chinese, how do I change it back? Language Support has an unwanted Chinese language option Nautilus Folders Turned Chinese Desktop 12.04 gnome/cairo suddenly in Chinese Unwanted Chinese language got set in system settings I cannot set my system back to English from Chinese Language Gnome-classic language turned into Chinese, how do I change it back to English? Strange display language in gnome shell I'm not sure they are related to this bug, but I just wanted to mention it, maybe it helps!

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  • Oracle Solaris 11.1 available today

    - by user12611852
    Today Oracle is pleased to announce availability of Oracle Solaris 11.1. Download Solaris 11.1 Order Solaris 11.1 media kitExisting customers can quickly and simply update using the network based repository Highlights include: 8x faster database startup and shutdown and online resizing of the database SGA with a new optimized shared memory interface between the database and Oracle Solaris 11.1 Up to 20% throughput increases for Oracle Real Application Clusters by offloading lock management into the Oracle Solaris kernel Expanded support for Software Defined Networks (SDN) with Edge Virtual Bridging enhancements to maximize network resource utilization and manage bandwidth in cloud environments 4x faster Solaris Zone updates with parallel operations shorten maintenance windows New built-in memory predictor monitors application memory use and provides optimized memory page sizes and resource location to speed overall application performance. Learn more and share these valuable tools with your customers to enable them to move to Oracle Solaris 11.1 quickly. Many customers wait for the first update --now is the time to encourage them to install Oracle Solaris 11.1. Oracle Solaris 11.1 Data Sheet  What's New in Oracle Solaris 11.1 Oracle Solaris 11.1 FAQs Oracle Solaris 11 .1 Customer Presentation Oracle Solaris 11.1 is recommended for all SPARC T4 Systems and will soon be available preinstalled.

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