[Quantal] [Regression] corrupt X11 background (white) on Intel

[Swâmi Petaramesh]

Quantal, Asus EeePC 1005PE, Intel display netbook.

Screen background goes plain white instead of background image.

Hovering the mouse and right-clicking on the background causes it to reappear.

Hovering the mouse on the Unity laucher causes white corruption to reappear on the background.

This didn't happen before Quantal on this machine, thus this is an annoying regression.

00:02.0 VGA compatible controller: Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller
00:02.1 Display controller: Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller

[ 99.330] (--) intel(0): Integrated Graphics Chipset: Intel(R) Pineview GM

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-video-intel 2:2.20.3-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-13.13-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
ApportVersion: 2.5.1-0ubuntu3
Architecture: amd64
Date: Wed Aug 29 11:14:56 2012
DistUpgraded: 2012-08-29 09:33:42,269 DEBUG enabling apt cron job
DistroCodename: quantal
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller [8086:a011] (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:83ac]
   Subsystem: ASUSTeK Computer Inc. Device [1043:83ac]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MachineType: ASUSTeK Computer INC. 1005PE
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/UBUNTU/@boot/vmlinuz-3.5.0-13-generic root=/dev/mapper/VG1-BTR_POOL ro rootflags=subvol=UBUNTU/@ clocksource=hpet acpi_osi=Linux acpi_backlight=vendor eeepc_laptop.hotplug_disabled=1 quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: Upgraded to quantal on 2012-08-29 (0 days ago)
dmi.bios.date: 06/23/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1202
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1005P
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1202:bd06/23/2010:svnASUSTeKComputerINC.:pn1005PE:pvrx.x:rvnASUSTeKComputerINC.:rn1005P:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1005PE
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
version.compiz: compiz 1:0.9.8+bzr3319-0ubuntu3
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.38-0ubuntu2
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120821.c1114c61-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120821.c1114c61-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.12.99.905-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120713.6ef1ad6a-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.3-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-4~ubuntu1

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Marius B. Kotsbak (mariusko)]

Please try to get a screenshot of the problem and upload. I saw something similar in bug #1044552.

[Marius B. Kotsbak (mariusko)]

Possible a duplicate of bug #1042211.

[Swâmi Petaramesh (swami-petaramesh)]

My symptoms here do not look like bug #1044552 but may, or may not, be related to bug #104221.

However moving windows around is not what causes most screen corruption (unless Windows moves and touch the launchbar, then the background isn't repainted properly).

My symtoms are :

1- Screen background disappears and is replaced with plain bright white
2- Contextual (right-button) menus appear empty (only grey background) but their textual contents appear as soon as I hover my mouse over them.
3- Hovering my mouse over the launchbar causes text labels to appear (which is normal) but when they disappear (moving the mouse elsewhere) the background isn't redrawn so it leaves a white corruption.
4- Possible other problems that I didn't notice yet ?

I could only make a screenshot of problem #1.
I cannot screenshot #2 as the screenshot key is disabled when a contextual menu is displayed.
I cannot screenshot #3 as the background is redrawn when I press the screenshot key.

[Marius B. Kotsbak (mariusko)]

You could try the workaround:

 sudo add-apt-repository ppa:unity-team/staging

If it helps, it is a good change that at least this bug and bug #1042211 has the same solution.

[Swâmi Petaramesh (swami-petaramesh)]

Installing updates from ppa:unity-team/staging solved my issue, thanks !

Marking this bug as a duplicate of bug #1042211...