If this is fixed by 2.21.14 then I can tell you what the problem was...
a bug in the xserver with missing DRI2 InvalidateNotifies.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Fix Committed
** Summary changed:
- video corruption on multi display
+ (needs 2.21.14) video corruption on multi display
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https://bugs.launchpad.net/bugs/1172450
Title:
(needs 2.21.14) video corruption on multi display
Status in “xserver-xorg-video-intel” package in Ubuntu:
Fix Committed
Bug description:
laptop 13" + 37" LCD TV via HDMI
2 windows chrome + pidgin open
screen corruption when alt+tabbing between apps
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xserver-xorg-video-intel 2:2.21.6-0ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,workarounds,grid,vpswitch,snap,imgpng,resize,expo,place,gnomecompat,mousepoll,move,ezoom,unitymtgrabhandles,wall,session,fade,scale,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Wed Apr 24 20:40:46 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus:
v4l2loopback, 0.6.1: added
vboxhost, 4.2.12, 3.8.0-17-generic, x86_64: installed
vboxhost, 4.2.12, 3.8.0-18-generic, x86_64: installed
vboxhost, 4.2.12, 3.8.0-19-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:0510]
InstallationDate: Installed on 2012-06-10 (317 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120606.2)
MachineType: Dell Inc. Vostro V131
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-19-generic
root=UUID=c4fd53f4-edab-4eb7-9aac-e7eb10555ba6 ro quiet
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/31/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 0P0TH6
dmi.board.vendor: Dell Inc.
dmi.board.version: A02
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnDellInc.:bvrA02:bd08/31/2011:svnDellInc.:pnVostroV131:pvrNotSpecified:rvnDellInc.:rn0P0TH6:rvrA02:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Vostro V131
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.43-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.1-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.7-0ubuntu1
xserver.bootTime: Wed Apr 24 19:51:24 2013
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu6
xserver.video_driver: intel
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