Turning off laptop display does not work

[Hans Peter]

I am using open-source drivers for my ati card. If I connect an external monitor to my laptop (acer aspire 8942g) it connects and I can see a clear imagine, but if I try to turn off my laptops display via gnome-display-properties the external monitor continues working, but my laptops display starts to show my sequently changing colors on the full screen like on a display test. Sometimes I start my laptop and and the laptop display shows normal sometimes the resolution is low and sometimes it again shows these colors (always with my external monitor connected). I had ati proprietary drivers installed once and everything worked fine and I could turn my laptops display off, but not on the open source drivers. Also turning my laptops monitor with Fn+F6 does work, but after I press any key on the keyboard it turns on again.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: gnome-control-center 1:2.32.0-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic x86_64
Architecture: amd64
Date: Mon Oct 17 20:34:45 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 LANGUAGE=ru:ru_RU:en_US:en
 LANG=ru_RU.utf8
 SHELL=/bin/bash
SourcePackage: gnome-control-center

[Sebastien Bacher (seb128)]

thank you for your bug report, does doing the same thing with the xrandr command line works?

[Hans Peter (meinungscash)]

Do you mean:
xrandr --output LVDS --off

This command doesn't change anything.

[Hans Peter (meinungscash)]

If I type this command:

xrandr --output LVDS --off

the same thing happens like using gnome-display-properties, which means different colours (test screen like).

[Sebastien Bacher (seb128)]

ok, that seems an xorg issue then

[penalvch (penalvch)]

Hans Peter, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p xorg-server REPLACE-WITH-BUG-NUMBER

Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Launchpad Janitor (janitor)]

[Expired for xorg-server (Ubuntu) because there has been no activity for 60 days.]