RandR + dual head - debugging
andree182 at gmail.com
Thu May 8 02:42:16 PDT 2008
couldn't find this info anywhere, so I'll try to get some info here, sorry for
I recently switched to ubuntu hardy - x.org 1.4.1 / xserver 7.3 (or in
whichever order these numbers are :-)).
I'm using dualhead configuration with recent ati drivers on ati X700 (I think
the combination isn't the problem). I use xrandr utility to setup the
configuration (xorg.conf didn't work - or at least there's no official
documentation how to use xrandr there), it works pretty OK, but there's a
catch. The command I use to set the resolution is a standard one:
xrandr --output VGA-0 --mode 1680x1050 --right-of LVDS
Recently (after the system upgrade) some apps begun to mess up the screen
resolution (namely wine) when executed. The very simplest simulation of the
problem is calling xrandr without any parameter(s).
What happens is that the VGA-0 gets some strange resolution (I guess the same
LVDS has, 1400x1050) and starts to mirror the LVDS.
Now I don't know at all where I should search for the bug (except for the
sources ;-( ). Is there any possibility to debug the randr calls - without
recompiling the xserver?
More information about the xorg