Dual-head initial render of left screen is wrong after login

[Bryce Harrington]

Binary package hint: compiz

I have a dual-head desktop system with radeon RV770. I use a ~/.xprofile script to launch firefox and some pre-positioned xterms on the two screens.

In metacity, they come up and are displayed correctly.

Under unity/compiz, the right screen renders correctly but the left one shows part of the screen sort of stretched out horizontally (see photo 1).

When I simply click the mouse on the firefox window, suddenly the screen redraws itself correctly (see photo 2).

This is not a recent regression - I've seen it each time I boot into unity during natty development. In maverick, compiz worked correctly but I didn't try unity on that release.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: compiz 1:0.9.4+bzr20110415-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,scale,session,unityshell]
CompositorRunning: compiz
DRM.card0.DIN.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Fri Apr 15 15:25:37 2011
DistUpgraded: Log time: 2011-02-18 16:15:57.553103
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard:
 ATI Technologies Inc RV770 [Radeon HD 4850] [1002:9442] (prog-if 00 [VGA controller])
   Subsystem: PC Partner Limited Sapphire HD 4850 512MB GDDR3 PCI-E Dual Slot Fansink [174b:e810]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
MachineType: Gigabyte Technology Co., Ltd. P67A-UD4-B3
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=C
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae root=UUID=2b238928-f3f1-4074-b551-2cceff54c6a4 ro nopat vesafb.invalid=1 drm.debug=0xe
ProcVersionSignature_: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Renderer: Unknown
SourcePackage: compiz
UpgradeStatus: Upgraded to natty on 2011-04-04 (10 days ago)
dmi.bios.date: 02/22/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: P67A-UD4-B3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd02/22/2011:svnGigabyteTechnologyCo.,Ltd.:pnP67A-UD4-B3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP67A-UD4-B3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: P67A-UD4-B3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.4+bzr20110415-0ubuntu1
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 7.10.2-0ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu1
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[Bryce Harrington (bryce)]

Note how the remainder of the window on the left monitor does not show on the right.

[Bryce Harrington (bryce)]

One click on the titlebar of a window on the left screen is sufficient to restore the rendering.

I gather the click triggers a redraw event.

I can try booting a few different ways to isolate it if you'd like. But I'm guessing this may already be a known issue, so will wait until someone has verified if this is just a dupe to do more testing.

[jhfhlkjlj (fdsuufijjejejejej-deactivatedaccount)]

Hi, Bryce. Can you still reproduce this issue on 11.10/12.04? Thanks.

[Bryce Harrington (bryce)]

In fact just upgraded this box Friday. The issue is gone in both oneiric and precise.