apport information ** Attachment added: "ProcCpuinfo.txt" https://bugs.launchpad.net/bugs/1354841/+attachment/4262916/+files/ProcCpuinfo.txt
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1354841 Title: Screen corruption (characters are drawn as black squares) Status in “xorg” package in Ubuntu: Incomplete Bug description: Sometimes, the characters are rendered as black squares (cf attachment). I couldn't find any event in the systems logs that could explain that. I can "stop" the bug by changing the anti-aliasing options in the system settings (enabled / disabled, level of hinting) and restarting the applications, but the squares can come back later on, and I have to repeat the operation. The bug almost exclusively happens with firefox and thunderbird, though krunner is also affected (but not other kde apps). I'm not using many GTK applications, but I can also see the bug with unison. It used to happen in 13.10 as well, and upgrading to 14.04.1 hasn't improved the situation ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xorg 1:7.7+1ubuntu8 ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.3 Architecture: amd64 CurrentDesktop: KDE Date: Sun Aug 10 14:03:25 2014 InstallationDate: Installed on 2011-01-10 (1307 days ago) InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) ProcEnviron: LANGUAGE= PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to trusty on 2014-08-06 (3 days ago) --- ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: kwin CurrentDesktop: KDE DistUpgraded: 2014-08-06 14:32:56,683 DEBUG enabling apt cron job DistroCodename: trusty DistroRelease: Ubuntu 14.04 DistroVariant: kubuntu DkmsStatus: virtualbox, 4.3.10, 3.13.0-40-generic, x86_64: installed virtualbox-guest, 4.3.10, 3.13.0-40-generic, x86_64: installed ExtraDebuggingInterest: No GraphicsCard: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:0428] InstallationDate: Installed on 2011-01-10 (1407 days ago) InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) MachineType: Dell Inc. Latitude E5510 Package: xorg 1:7.7+1ubuntu8 PackageArchitecture: amd64 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-40-generic root=UUID=851d627f-547c-4a28-94e7-778e3a396d65 ro loop.max_part=63 quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10 Tags: trusty kubuntu Uname: Linux 3.13.0-40-generic x86_64 UpgradeStatus: Upgraded to trusty on 2014-08-06 (103 days ago) UserGroups: adm admin audio cdrom condor dialout disk fuse lpadmin mysql plugdev sambashare video _MarkForUpload: True dmi.bios.date: 04/21/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A14 dmi.board.vendor: Dell Inc. dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA14:bd04/21/2013:svnDellInc.:pnLatitudeE5510:pvr0001:rvnDellInc.:rn:rvr:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E5510 dmi.product.version: 0001 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.2 version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.3 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2 xserver.bootTime: Sat Nov 15 13:25:39 2014 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 21579 vendor SEC xserver.version: 2:1.15.1-0ubuntu2.2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1354841/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp