Windows shifted and non functional after monitor goes in standby

[Esther]

Binary package hint: gnome-screensaver

This bug occurred in Lucid Lynx 10.04 LTS on an Acer 21" wide screen monitor. I have an ATI Radeon 200M chipset.
I am not sure if this bug is related to my video chipset, power management settings, or something else.

The screensaver preferences were set on the Helios screensaver and set to activate after 5 minutes of inactivity. Upon awakening the monitor by moving the mouse or touching the keyboard, any open windows would be shifted from their previous position. For example Firefox always shifts down, other windows shift in the northwest direction. The title bar, min/max & close buttons of each window disappears. The screen does not completely freeze but I am unable to click on the top of the window and move it to its correct location. I am able to activate the top File-Edit-View toolbar and close the windows but only on the window that is on top. I am unable to switch to an alternate window. If you would like me to test this further, please let me know. This bug did not exist with the Karmic release.

Restarting the computer returns functionality. I have disabled both the screensaver and the power management settings and have not had any further problems.

I expected the screen to be fully functional once it is awakened from standby.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gnome-screensaver 2.30.0-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.32-25.44-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic i686
Architecture: i386
CheckboxSubmission: fd057b0bdea60eb17cdbf0a26f3fba5f
CheckboxSystem: 0531969bcfd4f03af7405c98dc94a948
Date: Sun Oct 10 13:03:34 2010
ExecutablePath: /usr/bin/gnome-screensaver
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: gnome-screensaver
WindowManager: compiz
XsessionErrors: (polkit-gnome-authentication-agent-1:1486): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

[Esther (melanes)]

It would appear this bug is probably related to Compiz/opengl and the video driver/chipset.

I had the exact behavior occur after having turned off the power management and screensaver. I had several programs open and I was switching back and forth several times. When I hit the Display desktop button the open windows all shifted and an error box popped up with this statement, "Your window manager does not support the show desktop button or you are not running a window manager."

I have now turned off all special effects managed by Compiz, the screen saver and the power manager. I'll update if the problem shows up again.

[Pedro Villavicencio (pedro)]

Thanks for the report, it has been some time without any response or feedback in this bug report and we are wondering if this is still an issue for you with the latest release of Ubuntu the Natty Narwhal, May you please test with that version and comment back if you're still having or not the issue? Please have a look at http://www.ubuntu.com/download to know how to install that version. Thanks in advance and sorry for the late response.

[Esther (melanes)]

My current release is Maverick Meerkat. I continue to have problems with screen freezing, etc. I've had to disable all compiz special effects and the screen saver. By doing so, I have no problems. There is some kind of problem with the above video chipset and compiz/opengl but I don't know what it is. As Maverick Meerkat is a long term release and Natty Narwhal is unlikely to support my hardware either, I am inclined to not upgrade as a solution to a problem which has existed off and on since Hardy Heron.

[Launchpad Janitor (janitor)]

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