Mostly happens in terminals. I notice it most when running irssi in screen on a remote host. I switch irc channels which should repaint the entire window (as the whole chat has changed) but only small portions of the screen get drawn. It doesn't happen all the time, but often enough to be annoying. I can rule out screen and irssi because it also happens on the local machine if I open a terminal and just do simple 'ls'. I can get a terminal window where (for example) the left 50% of the window contains content, the left 50% is just black. If I press enter a few times, or open another unrelated app window (like shutter to take a screenshot of the oddness) it repaints the window.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: compiz 1:0.9.6+bzr20110929-0ubuntu8
ProcVersionSignature: Ubuntu 3.2.0-7.13-generic 3.2.0-rc7
Uname: Linux 3.2.0-7-generic x86_64
NonfreeKernelModules: nvidia wl
.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 285.05.09 Fri Sep 23 17:31:57 PDT 2011
GCC version: gcc version 4.6.2 (Ubuntu/Linaro 4.6.2-9ubuntu1)
.tmp.unity.support.test.0:
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,snap,grid,place,session,move,resize,regex,gnomecompat,imgpng,vpswitch,mousepoll,unitymtgrabhandles,animation,wall,fade,expo,ezoom,scale,unityshell,workarounds]
CompositorRunning: compiz
Date: Tue Jan 10 10:24:21 2012
DistUpgraded: Log time: 2011-12-22 10:48:58.804612
DistroCodename: precise
DistroVariant: ubuntu
GraphicsCard:
nVidia Corporation Device [10de:08a0] (rev a2) (prog-if 00 [VGA controller])
Subsystem: Apple Computer Inc. Device [106b:00c2]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901)
JockeyStatus:
kmod:wl - Broadcom STA proprietary wireless driver (Proprietary, Enabled, In use) [auto-install]
xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use)
MachineType: Apple Inc. MacBookPro7,1
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-7-generic root=UUID=d9fc020e-1fa2-451d-bc30-b6bcf18e3aa4 ro quiet splash vt.handoff=7
SourcePackage: compiz
UpgradeStatus: Upgraded to precise on 2011-12-22 (18 days ago)
dmi.bios.date: 06/01/10
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP71.88Z.0039.B0B.1006012305
dmi.board.name: Mac-F222BEC8
dmi.board.vendor: Apple Inc.
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F222BEC8
dmi.modalias: dmi:bvnAppleInc.:bvrMBP71.88Z.0039.B0B.1006012305:bd06/01/10:svnAppleInc.:pnMacBookPro7,1:pvr1.0:rvnAppleInc.:rnMac-F222BEC8:rvr:cvnAppleInc.:ct10:cvrMac-F222BEC8:
dmi.product.name: MacBookPro7,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu8
version.ia32-libs: ia32-libs 20090808ubuntu32
version.libdrm2: libdrm2 2.4.29-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu4
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.10.4-1ubuntu6
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 2:2.15.901-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1
This sounds xorgy to me. Assigning to the desktop team in case they would like to take a look.