Bug#558662: gdm: virtual size does not fit available size

[Jeff Abrahamson]

On Mon, Nov 30, 2009 at 12:47:39PM +0100, Josselin Mouette wrote:
>   [19 lines, 138 words, 855 characters]  Top characters: etiorsnu
> 
> Le dimanche 29 novembre 2009 à 18:01 +0000, Jeff Abrahamson a écrit : 
> > Gdm comes up in single-head mode, but I have two monitors.  Using
> > /usr/bin/gnome-display-properties, I can uncheck the mirror
> > display button, but am told "required virtual size does not fit
> > available size: requested=(3840, 1200), minimum=(320, 200),
> > maximum=(1920, 1920)".  Google suggests this may be related to KMS
> > support, which seems from what I read to be driver specific.  I've
> > filed a bug with the xorg driver guys, but am looking for a
> > workaround to get gdm to allocate adequate space at startup.
> > 
> >    http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=516210#60
> 
> How is that a problem in GDM? 

It appears that gdm starts X differently than simply running startx
(as per experiment and as per Xorg docs).  So I'm hoping there's a way
to give gdm some hints about how it should start X.

-Jeff