On 4/14/09, di dit <[email protected]> wrote: > While upgrading from version 6.9.0 to 6.12.2, dualhead stopped > working. I didn't succeed to have > the two identical monitors displaying different content. Clone mode works > fine. > > Trying to setup dualhead with "xrandr --output DVI-1 --left-of DVI-0" > or similar commands turn one > monitor black (standby mode?) while the other output is as expected. > > I already submitted a bug to debian BTS where the relevant logs can be found > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=523589 > > Maybe it is related to the following bug, but I'm not sure: > http://bugs.freedesktop.org/show_bug.cgi?id=21050 >
Both heads are probably using the same crtc, but xrandr isn't smart enough to assign a different one in the dualhead case. You can see what crtc is in use by running xrandr --verbose. You can assign a different crtc to the other head like so: xrandr --output DVI-1 --crtc 1 --mode 1280x1024 --left-of DVI-0 Alex _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
