Public bug reported:
When I connect or disconnect an external monitor, or when I switch the
power of a connected monitor on and off, the state does not get
detected.
When I switch the external monitor off, or remove the laptop from the
docking-station, the system continues to "think" there are two monitors
connected.
Sometimes it helps to push the button "detect monitors" in the display
setiings, or to hit the hardware button that toggles trough the display states
(internal-only, mirror screens, external-only, extended screen) , on my machine
it's the Fn-F5 key.
But sometimes this does not help at all.
Even worse, when I put the laptop in the docking-station with the
external-monitor powered off, and the cold-boot the laptop, X "thinks" that the
external monitor were powered on.
As I have a laptop and two docking-stations, one at home the other at work,
with two different external monitors connected I could see a really strange
effect.
Even with the monitor powered off I can see the correct monitor information in
the display settings dialog, so some how the information is read from the
powerless monitor.
If connected and turned on, the displays otherwise work normally, no screen
corruption of any kind.
Just the state of the monitors is not correctly detected.
On Quantal using precisely the same harware it worked as expected.
On external monitor on/off or dock/undock the display settings adjusted
themselves to the new situation without any manual interaction.
I verfied this behaviour also with a live USB Stick of raring-beta2.
I'm not 100% sure whether this bug is to be located in the linux-kernel
or the X11 system.
It just worked with all Ubuntu Versions from Karmic up to Quantal, and
now using Raring it does no longer work.
Ciao,
Franco
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
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,regex,grid,vpswitch,imgjpeg,commands,mousepoll,move,imgpng,resize,place,animation,imgsvg,gnomecompat,snap,session,wall,workarounds,expo,fade,scale,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Sat Apr 27 07:08:01 2013
DistUpgraded: 2013-04-23 06:09:45,803 DEBUG enabling apt cron job
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus: vboxhost, 4.2.12, 3.8.0-19-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary)
[8086:2a02] (rev 03) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device [1025:011b]
Subsystem: Acer Incorporated [ALI] Device [1025:011b]
InstallationDate: Installed on 2009-11-19 (1254 days ago)
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
MachineType: Acer, inc. TravelMate 6292
MarkForUpload: True
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-19-generic
root=UUID=d80ce3a6-4fc4-41f7-b7ee-5faf50197e82 ro kopt=quiet splash
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to raring on 2013-04-23 (4 days ago)
dmi.bios.date: 03/03/2008
dmi.bios.vendor: Acer
dmi.bios.version: v1.3601
dmi.board.name: Victoria
dmi.board.vendor: Acer, Inc.
dmi.board.version: Not Applicable
dmi.chassis.type: 1
dmi.chassis.vendor: Acer, Inc.
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnAcer:bvrv1.3601:bd03/03/2008:svnAcer,inc.:pnTravelMate6292:pvrNotApplicable:rvnAcer,Inc.:rnVictoria:rvrNotApplicable:cvnAcer,Inc.:ct1:cvrN/A:
dmi.product.name: TravelMate 6292
dmi.product.version: Not Applicable
dmi.sys.vendor: Acer, inc.
version.compiz: compiz 1:0.9.9~daily13.04.18.1~13.04-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
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: Fri Apr 26 23:03:39 2013
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu6
xserver.video_driver: intel
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 raring ubuntu
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https://bugs.launchpad.net/bugs/1173478
Title:
Regression: power on/off and connect/disconnect of external monitor
not detected
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