Intel 915GM dual screen (1280x1024 and 1024x768)

Lars Ivar Igesund larsivar at igesund.net
Thu Nov 6 06:36:35 PST 2008


On Thursday 06 November 2008 15:28:15 Valent Turkovic wrote:
> On Thu, Nov 6, 2008 at 3:15 PM, Kiniou <kiniou at gmail.com> wrote:
> > Hi,
> >
> > 2008/11/6 Valent Turkovic <valent.turkovic at gmail.com>
> >
> >> $ xrandr --output VGA --auto --right-of LVDS
> >> xrandr: screen cannot be larger than 2048x1024 (desired size 2304x1024)
> >
> > The maximum virtual screen can be configured in the Display SubSections
> > of a Screen Section  in xorg.conf like this :
> > Section "Screen"
> >   Identifier "Screen1"
> >   Device "Device1"
> >   Monitor "Monitor1"
> >   DefaultDepth "24"
> > ...
> >   SubSection "Display"
> >      Depth 8
> >      Virtual 1600 1600   <-- here you can change the value to fit to your
> > needs
> >   EndSubSection
> > ...
> > EndSection
> >
> > ---
> > Kevin "kiniou" ROY
>
> I just need the confirmation that all intel video chips (including
> 915gm) support virtual screen size of 2304x1024.

Later do, 915gm is restricted to 2048x2048. Absurdly enough though, prior to 
RandR 1.2, it was possible to get larger screen sizes. It is apparently a lot 
of work to support now though, and it is not likely to be efficient (the max 
size refers to the maximum texture size I think).

Best regards,
Lars Ivar Igesund

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