Public bug reported:
When I switch between desktops not only are the windows on the new
desktop drawn noticeably more slowly than under 10.10, but parts of
windows from the previous screen remain on the new screen until I do
something that causes the relevant window to be re-drawn. Sometimes the
corruption is in the form of bits of the window underneath showing on
top of what should be the current window, rather than bits left over
from the previous desktop. This corruption does not occur every single
time I switch, but it is very frequent. It also happens both with the
nv driver and with the current nvidia driver, which I would normally
use.
I am using Ubuntu 11.04 on an AMD Phenom2 x4 (3.0GHz) with 4GB and
nVidia 7600GS and did not experience the problem before upgrade. xorg is
1:7.6+4ubuntu3.1
I attach a screenshot.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3.1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
.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_64 Kernel Module 270.41.06 Mon Apr 18 14:53:56
PDT 2011
GCC version: gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)
Architecture: amd64
CompizPlugins:
[core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: None
Date: Tue Jul 12 15:37:22 2011
DistUpgraded: Log time: 2011-05-03 21:44:26.626618
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
nVidia Corporation G73 [GeForce 7600 GT] [10de:0391] (rev a1) (prog-if 00 [VGA
controller])
Subsystem: Giga-byte Technology Device [1458:3417]
JockeyStatus:
xorg:nvidia_173 - NVIDIA accelerated graphics driver (Proprietary, Disabled,
Not in use)
xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary,
Enabled, Not in use)
MachineType: Gigabyte Technology Co., Ltd. GA-MA790XT-UD4P
ProcEnviron:
LANGUAGE=en_GB:en
LANG=en_GB.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: root=UUID=0bd70c77-4ab9-48c1-afb7-204c83f009fa ro quiet
splash
Renderer: Unknown
SourcePackage: xorg
Symptom: display
UnitySupportTest:
Error: command ['/usr/lib/nux/unity_support_test', '-p'] failed with exit code
1: Xlib: extension "GLX" missing on display ":0".
Xlib: extension "GLX" missing on display ":0".
Xlib: extension "GLX" missing on display ":0".
Error: unable to create the OpenGL context
UpgradeStatus: Upgraded to natty on 2011-05-03 (69 days ago)
dmi.bios.date: 05/21/2009
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F4
dmi.board.name: GA-MA790XT-UD4P
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias:
dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd05/21/2009:svnGigabyteTechnologyCo.,Ltd.:pnGA-MA790XT-UD4P:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-MA790XT-UD4P:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-MA790XT-UD4P
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
nvidia-settings:
/home/psrwebs/.gtkrc-2.0:7: Unable to locate image file in pixmap_path:
"gtk-no.png"
/home/psrwebs/.gtkrc-2.0:8: Unable to locate image file in pixmap_path:
"gtk-floppy2.png"
/home/psrwebs/.gtkrc-2.0:9: Unable to locate image file in pixmap_path:
"gtk-save-as.png"
/home/psrwebs/.gtkrc-2.0:10: Unable to locate image file in pixmap_path:
"preferences-desktop.png"
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20110107+b795ca6e-0ubuntu7
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug corruption natty regression-update ubuntu
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/809396
Title:
screen corruption on changing desktops
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