Looks like a tiling bug - in particular you have a machine susceptible to the L-shape tiling bug.
** Summary changed: - Corrupted painting of window surfaces + [gm45] Corrupted painting of window surfaces (L-shape tiling corruption?) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1222871 Title: [gm45] Corrupted painting of window surfaces (L-shape tiling corruption?) Status in “xserver-xorg-video-intel” package in Ubuntu: New Bug description: Attached is an example of a problem behaviour of horizontal black lines which affects Evince, Guadayeque and other programs on my desktop. The corruption is progressive (when first opened, apps don't tend to have the problem, happens on a per-window basis, (moving another window over the area is not corrupted) and seems to permanently affect certain in-memory glyphs (e.g. even after a restore and maximise, the icons in some applications remain similarly corrupted). ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: xorg 1:7.7+1ubuntu5 Uname: Linux 3.11.0-031100-generic i686 ApportVersion: 2.12.1-0ubuntu3 Architecture: i386 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Mon Sep 9 15:45:26 2013 DistUpgraded: Fresh install DistroCodename: saucy DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Toshiba America Info Systems Device [1179:000c] Subsystem: Toshiba America Info Systems Device [1179:000c] InstallationDate: Installed on 2013-08-15 (25 days ago) InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha i386 (20130626) MachineType: TOSHIBA PORTEGE R600 MarkForUpload: True ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-031100-generic root=/dev/mapper/ubuntu--gnome--vg-root ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/23/2008 dmi.bios.vendor: TOSHIBA dmi.bios.version: Version 1.50 dmi.board.asset.tag: 0000000000 dmi.board.name: Portable PC dmi.board.vendor: TOSHIBA dmi.board.version: Version A0 dmi.chassis.asset.tag: 0000000000 dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: Version 1.0 dmi.modalias: dmi:bvnTOSHIBA:bvrVersion1.50:bd10/23/2008:svnTOSHIBA:pnPORTEGER600:pvrPPR61E-00Q00CEN:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0: dmi.product.name: PORTEGE R600 dmi.product.version: PPR61E-00Q00CEN dmi.sys.vendor: TOSHIBA version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.46-1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu6 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu3 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1 xserver.bootTime: Mon Sep 9 13:53:48 2013 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.14.2.901-2ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1222871/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
