When I have certain applications maximized (i've seen this happen in firefox and rhythmbox so far) there are rendering glitches along the top right side. The wallpaper bleeds through, and sometimes there's a white line too. Only started happening recently. I tried turning off SNA in case it was related to SNA being turned on recently, but does it with UXA too, so seems to be a unity/compiz issue. My video card is intel HD4000, running raring 13.04 fresh installed today with all updates. Screenshot is attatched, you can see the blue wallpaper bleeding through on the top right of rhythmbox.
The glitch goes away if you un-maximize and re-maximize the app.
Step to reproduce: Maximize an application like firefox or rhythmbox, so it will remember that its maximized and open maximized next time you launch it. Close the application. Open it back up, and you will see the glitch on the top right. It only seems to happen if you launch the app maximized, if you open the app un-maximized, and then maximize it its fine.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity 6.12.0daily13.03.01-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-9.18-generic 3.8.1
Uname: Linux 3.8.0-9-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.9-0ubuntu2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Sat Mar 2 14:12:38 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
GraphicsCard:
Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
Subsystem: CLEVO/KAPOK Computer Device [1558:0240]
InstallationDate: Installed on 2013-03-02 (0 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130301)
MachineType: System76, Inc. Lemur Ultra
MarkForUpload: True
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-9-generic root=UUID=d820c2f1-95d7-4f16-a47f-1773dc4753a0 ro resume=UUID=dacbaa13-f8b3-421d-94df-3c296640326c quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/25/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: Lemur Ultra
dmi.board.vendor: System76, Inc.
dmi.board.version: lemu4
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd06/25/2012:svnSystem76,Inc.:pnLemurUltra:pvrlemu4:rvnSystem76,Inc.:rnLemurUltra:rvrlemu4:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.name: Lemur Ultra
dmi.product.version: lemu4
dmi.sys.vendor: System76, Inc.
version.compiz: compiz 1:0.9.9~daily13.03.01-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.42-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.2-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.3-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.6-0ubuntu3
xserver.bootTime: Sat Mar 2 14:07:11 2013
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.2-0ubuntu2
xserver.video_driver: intel
Status changed to 'Confirmed' because the bug affects multiple users.