On Wednesday 07 January 2009 17:51:35 Alex Deucher wrote: > On Wed, Jan 7, 2009 at 5:35 AM, <[email protected]> wrote: > > Setup is as follows: T60 Notebook in docking station (display "LVDS" and > > resolution 1400x1050) and two external displays via DVI (display "DVI-0" > > and resolution 1280x1024) and VGA (display "VGA-0" and resolution > > 1280x1024). > > > > Goal is to disable the notebook display and have a dualhead on the two > > external displays. > > > > I disabled the LVDS display via "xrandr --output LVDS --off" and tried to > > enable the external displays in dualhead mode "xrandr --output VGA-0 > > --left-of DVI-0". Which does not change anything. > > > > What can be wrong here? > > Both outputs are being driven by the same crtc (controls display > timing and fb offset). This allows you to drive all three monitors at > the same time (LVDS on one crtc, DVI/VGA on the other). To run them > on separate crtcs, specify the crtc with randr. run xrandr --verbose > to see the crtc assignments. > xrandr --output LVDS --off > xrandr --output VGA-0 --crtc 0 --mode 1280x1024 > xrandr --output DVI-0 --crtc 1 --mode 1280x1024
Thanks this did the trick - for one time. With xrandr --output LVDS --off && \ xrandr --output DVI-0 --crtc 0 --mode 1280x1024 && \ xrandr --output VGA-0 --crtc 1 --mode 1280x1024 && \ xrandr --output DVI-0 --left-of VGA-0 I was able to have a dualhead setup with the two external display. When switching to the notebook display alone with xrandr --output DVI-0 --off && \ xrandr --output VGA-0 --off && \ xrandr --output LVDS --crtc 0 --mode 1400x1050 the command chain for dualhead set-up results in a buggy set-up. The VGA-0 display remains dark; I can move the mouse over it and see it but when I try to move windows over there they are not displayed. The output "xrandr -- verbose" of the first dualhead and the second dualhead set-up are absolute the same. Any hints? _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
