Public bug reported:
Used Precise for weeks, with external monitor sometimes plugged, everything ok.
(Small drawback: boot fails with external monitor attached. Another issue.)
Today I applied system update.
Now, whenever I plug in external monitor, desktop extends correctly on it.
After a moment (minutes), the bug happens.
* Mouse pointer moves but...
* Clicking anywhere does nothing.
* *No* update anywhere on screen (e.g. no more CPU activity graph scrolling
every second)
* Music from X client rhythmbox continues playing for about a minute or so then
stops.
* Ctrl-Alt-F1 does not switch to text console
* Ssh into machine works. Killing some X clients does not change display.
One of the times, to get back control of the laptop screen, I had no choice but
reboot.
The last time, killall Xorg succeeded (a new Xorg was launched by lightdm) and
I'm using that session while typing this.
Bug happens reproductibly a while after external monitor plugged.
*Does not happen when external monitor is not plugged.*
##### History
* I'm not definitely sure that the bug was technically triggered by the update
today, but
* the problem definitely never happened before today.
* I applied software update on 13h14m.
* First bug occurrence at about 16h07m.
* Second bug occurrence at about 16h14m.
* Third bug occurrence at about 17h10m.
(then used machine on battery without external screen until out of
energy)
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,workarounds,scale,expo,ezoom]
CompositorRunning: None
Date: Mon May 21 18:46:13 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GpuHangFrequency: Several times a day
GpuHangReproducibility: Occurs more often under certain circumstances
GpuHangStarted: Today
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device [1043:2050]
NVIDIA Corporation GF106 [GeForce GT 555M] [10de:1247] (rev ff) (prog-if ff)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120419)
MachineType: ASUSTeK Computer Inc. N55SF
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic
root=UUID=31c3e78d-5937-43bd-b4b2-e14e52d2898c ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
XorgConf:
Section "Device"
Identifier "Default Device"
Option "NoLogo" "True"
EndSection
dmi.bios.date: 08/29/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: N55SF.207
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: N55SF
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrN55SF.207:bd08/29/2011:svnASUSTeKComputerInc.:pnN55SF:pvr1.0:rvnASUSTeKComputerInc.:rnN55SF:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: N55SF
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
version.compiz: compiz 1:0.9.7.8-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.19.0-0ubuntu1~xup1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20111201+b5534a1-1build2
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug freeze needs-reassignment precise regression-update
third-party-packages ubuntu
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1002542
Title:
Xorg freeze minutes after plugging external monitor.
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