Symptoms: When trying to run 3D applications in fullscreen, the screen will lock up. This happens with most 3D applications (examples: Return to Castle Wolfenstein: Enemy Territory, Enemy Lines 3|7, Unreal Tournament 2004, Bridge Builder), though a few applications (example so far: glxgears in fullscreen mode) seem to be working. The error happens directly after switching the screen resolution - the applications seems to get stuck at this point. In some applications the desktop screen can be seen through and the mouse can still be moved, but it's not possible to switch to other consoles. Other applications just show a black screen. Network access to the machine is still possible. Running the same applications in windowed mode is working. In Ubuntu this happens since version 7.10, but the error is also present in Slax 6.0.7. Older distributions (Ubuntu before 7.10, Slackware 11.0) didn't have that problem. Hardware: lspci output: 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M6 LY used in a Sony Vaio PCG-GR214EP Driver: radeon
I suspect this is a problem with xvidmode and xrandr 1.2. I suspect the VGA port is getting set as the "compat" output and since it's not connected it has no modes for xvidmode to query. Does it work if you have a monitor active on the VGA port?
Unfortunately attaching an external VGA monitor has no effect on this problem. This was tested both starting with an external monitor attached and by attaching the monitor during operation & switching to the monitor with Gnome's screen resolution settings tool. xrandr output doesn't seem too wrong, though: - Without external monitor ignaz@ikarus:~$ xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 1024 x 1024 VGA-0 disconnected (normal left inverted right x axis y axis) DVI-0 disconnected (normal left inverted right x axis y axis) LVDS connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0*+ 60.0 800x600 60.3 640x480 59.9 S-video disconnected (normal left inverted right x axis y axis) - With external monitor (the external monitor itself would be capable of a resolution of 1280x1024) ignaz@ikarus:~$ xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 1024 x 1024 VGA-0 connected (normal left inverted right x axis y axis) 1024x768 74.9 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 75.0 72.8 66.7 60.0 720x405 69.6 720x400 70.1 640x400 69.2 640x360 69.4 DVI-0 disconnected (normal left inverted right x axis y axis) LVDS connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0*+ 60.0 800x600 60.3 640x480 59.9 S-video disconnected (normal left inverted right x axis y axis)
Closing due to inactivity. Reopen if this is still a bug.
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