Monitor Preferences dynamically changes settings

[Hang Fire]

After login, at first laptop and HDMI/DVI mounted 1920x1200 monitor display correct resolution with different desktops (gnome primary on laptop). After several minutes of use, resolution suddenly changes to 1024x768 and both displays have the same image.

Opening System->Preferences->Monitors, the Monitor Preferences dialog now displays a checkmark in "Same image in all monitors". This was not the previous setting. Both monitors can be set to the correct resolutions (1366x768 and 1920x1200), applied, and made default.

System will typically do this resolution/image regression at least once after boot, often twice. After setting twice the system will remain at correct resolutions and non-twinned monitor images for the remainder of runtime until rebooted.

Behaviour is the same with a Dell or a Viewsonic 1920x1200 external monitor. Monitor is mounted on HDMI to DVI adapter.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-control-center 1:2.32.1-0ubuntu15
ProcVersionSignature: Ubuntu 2.6.38-13.54-generic 2.6.38.8
Uname: Linux 2.6.38-13-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Thu Feb 2 11:23:11 2012
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)

[Hang Fire (hangfirew8)]

This was a fresh install. I split the Windows 7 partition on the new laptop a few months ago, and installed 11.04 from DVD. System is up-to-date on updates.

[Hang Fire (hangfirew8)]

Elaboration- Not really 'different desktops', same desktop spanning two monitors.

[Sebastien Bacher (seb128)]

Thank you for your bug report, could you add your .xsession-errors when getting the issue?

[Hang Fire (hangfirew8)]

I upgraded to 11.10 on Feb 28 and on Mar 1 it happened again. So we can expand this bug to cover both 11.04 and 11.10 systems with ATI video.

[Launchpad Janitor (janitor)]

[Expired for gnome-settings-daemon (Ubuntu) because there has been no activity for 60 days.]

[hangfirew8 (hangfirew8-netscape)]

Expired after I uploaded everything required... who's fault is that?

[Sebastien Bacher (seb128)]

> Expired after I uploaded everything required... who's fault is that?

- the bug triagers for having too much to do and not keeping up with everything
- launchpad for not being smarted about infos added
- your for not settings back the status from incomplete to new after providing the infos

in any case reopening, sorry about that

[hangfirew8 (hangfirew8-netscape)]

OK Thanks I didn't know I had to do that, or had the power to do that- I'm used to bug systems where status is owned by the development side.

[Sebastien Bacher (seb128)]

statuses changes are limited but incomplete->new is available to the bug submitter