On Thu, Nov 04, 2010 at 11:08:23PM +0000, Mick wrote: > On Thursday 04 November 2010 21:36:46 Florian Philipp wrote: > > Am 04.11.2010 21:17, schrieb Mick: > > [...] > > > > > Then I ran xrandr again as Florian suggested and this is what it shows: > > > > > > $ xrandr --output DVI-0 --auto <--this gives 1920x1080 > > > $ xrandr --output DVI-0 --right-of-VGA-0 --verbose > > > xrandr: screen cannot be larger than 1920x1920 (desired size 3200x1080) > > > > > > As a result it does not place the DVI on the right of the VGA driven > > > monitor. Can you please explain this error to me - why does it complain? > > > > Hmm, do you still have an xorg.conf file or changed settings in > > /etc/X11/xorg.conf.d? If you have, can you post it please? > > > > I think it is related to the > > 'SubSection "Device" > > Virtual xdim ydim' > > setting but I'm not sure. In any case, if I were you, I'd try running > > without any xorg.conf and see whether auto-configuration can handle it. > > Oh, and if you are still on x11-base/xorg-server-1.7.*, please try > > x11-base/xorg-server-1.8.2 with USE="udev -hal" > > Thanks again Florian, > > I do not have an xorg.conf. I am running x11-base/xorg-server-1.7.7-r1. I > have been waiting on 1.8.2 to go stable. > > Googling around I suspect I know what the error is: > > $ xrandr -q > Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 1920 x 1920 > > is telling me that my ATI X600 can only do a max of 1920 x 1920. Above that > I > will need to set up a virtual screen (and it won't be able to do dri). > > Without an xorg.conf file it is failing because it is not given a virtual > screen to expand its physical capability beyond 1920x1920. Any idea if I can > set up a virtual screen using the .fdi files?
Intel drivers (for my thinkpad notebook) had a similar problem. If you didn't use an xorg.conf, they would set up the max screen size to the maximum possible resolution on one of the monitors... I haven't found a way to change that without an xorg.conf... (didn't have much motivation as I just always used an xorg.conf, event with hal... and I'm on ~arch, so its not much of an issue now...) yoyo PS right now, the current intel driver I have seems to have a hard maximum of 2048x2048 on my card, though I remember going above that in the past... ;(( yoyo
