Hi, In our team, we've been doing some testing through the plugin that shows compiz redraws. The main result that our testing got was that compiz *is redrawing* the window when the bug occurs. This means that compiz is getting the "redraw" signal correctly, but when it redraws, the buffer still contains the old or partially old content. Doing any change in the environment but not the content, like moving the window affected, triggers another redraw and this time with the right content.
We also found that unaffected programs, like terminator or konsole, do more redraws. So it's possible that the first redraw is corrupted (it flashes way too fast to tell) but then the second one is not corrupted. Current working hypothesis: Certain programs (gnome-terminal, gvim, xterm) when being used in a compositing environment send the "please redraw" signal before they have finished drawing to their buffer and so the compositing window manager draws a partially/totally corrupted screen. We've found that we can reproduce this bug with 1 or 2 monitors, running under several different environments (unity, gnome, cinnamon), in our case always with nVidia cards. When using Unity, the current workaround is to enable "Force full screen redraws (buffer swap) on repaint" through ccsm. When using cinnamon we've tried the workaround listed in the previous post (CLUTTER_PAINT =disable-clipped-redraws:disable-culling <command>) helps but doesn't solve it 100%. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/861268 Title: text corruption in terminals (xterm, urxvt) and emacs Status in Compiz: Confirmed Status in Compiz Core: Confirmed Status in “compiz” package in Ubuntu: Confirmed Status in “nvidia-graphics-drivers” package in Ubuntu: Confirmed Bug description: Using tmux with urxvt results in frequent screen corruption. I am running tmux as "tmux -2" to enable 256 colour mode and my .tmux.conf contains: set-option -g default-terminal "screen-256color" ... to enable 256 colours for apps running inside tmux. When corruption occurs, neither clearing the screen with "clear" or "tput clear" helps. What does seem to help is switching to another tmux window and back to the problematic one. This configuration used to work fine in natty. --- .proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86 Kernel Module 280.13 Wed Jul 27 16:55:43 PDT 2011 GCC version: gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu4 Architecture: i386 CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell] CompositorRunning: compiz DistUpgraded: Log time: 2011-09-25 10:58:52.659181 DistroCodename: oneiric DistroRelease: Ubuntu 11.10 DistroVariant: ubuntu GraphicsCard: nVidia Corporation GT218 [NVS 3100M] [10de:0a6c] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Lenovo ThinkPad T410 [17aa:2142] InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007) JockeyStatus: xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use) xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use) MachineType: LENOVO 2516CTO NonfreeKernelModules: nvidia Package: unity 4.24.0-0ubuntu2b1 PackageArchitecture: i386 PlymouthDebug: Error: [Errno 13] Permission denied: '/var/log/plymouth-debug.log' ProcEnviron: PATH=(custom, user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic-pae root=UUID=7ad192e9-7b26-49d1-8e1c-fefc7dc495cb ro acpi_sleep=nonvs quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic-pae 3.0.4 Tags: oneiric running-unity ubuntu compiz-0.9 oneiric running-unity oneiric running-unity oneiric running-unity ubuntu compiz-0.9 Uname: Linux 3.0.0-12-generic-pae i686 UpgradeStatus: Upgraded to oneiric on 2011-09-25 (43 days ago) UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare sbuild dmi.bios.date: 08/27/2010 dmi.bios.vendor: LENOVO dmi.bios.version: 6IET72WW (1.32 ) dmi.board.name: 2516CTO dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6IET72WW(1.32):bd08/27/2010:svnLENOVO:pn2516CTO:pvrThinkPadT410:rvnLENOVO:rn2516CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2516CTO dmi.product.version: ThinkPad T410 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu5 version.libdrm2: libdrm2 2.4.26-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3 version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1 To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/861268/+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
