Red Hat Bugzilla – Bug 446623
gnome-display-properties won't show two screens side by side
Last modified: 2008-05-16 10:09:31 EDT
Description of problem:
When setting my two screens (laptop & external lcd) side by side in
gnome-display-properties, both screens still show the same content. I'd expect
the desktop to span over the two displays.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
My machine has an Intel 945 graphics controller.
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML
Express Integrated Graphics Controller (rev 03)
Is "mirror screens" enabled? Please attach your X.org log as well as the output
of "xrandr -q" when reproducing the problem.
nope, the mirroring is not enabled. :)
[jannepih@localhost ~]$ xrandr -q
Screen 0: minimum 320 x 200, current 1920 x 1024, maximum 1920 x 1920
VGA connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm
1280x1024 60.0*+ 75.0 60.0 60.0*
1360x768 59.8 60.0
1152x864 75.0 75.0 75.0 70.0 60.0
1024x768 75.1 75.0 70.1 60.0
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 75.0 60.0 59.9
LVDS connected 1024x768+0+0 (normal left inverted right x axis y axis) 246mm x 185mm
1024x768 50.0 + 60.0* 40.0
640x480 60.0 59.9
Please find the Xorg.0.log attached.
Created attachment 305652 [details]
Actually, the spannig seems to work, just that the resolution of my displays
exceed 1920x1920. Is this the maximum resolution of my graphics card or is the
limitation somewhere else?
[jannepih@localhost ~]$ xrandr --output VGA --right-of LVDS
xrandr: screen cannot be larger than 1920x1920 (desired size 2304x1024)
When lowering the resolution, everything seems to work fine.
You can add a line in your xorg.conf. See the "Virtual" line in the examples:
2048x2048 seems to be the maximum resolutions you can get with the intel drivers
This is a known limitation of X right now. The X team is working to have a
better story by F10.