apport information ** Tags added: apport-collected
** Description changed: 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 ** Attachment added: "BootDmesg.txt" https://bugs.launchpad.net/bugs/1354841/+attachment/4262908/+files/BootDmesg.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1354841 Title: Screen corruption (characters are drawn as black squares) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1354841/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
