Fwd: xf86-video-i810-1.9.92 works on external 1920x1200 but not 1400x1050 laptop screen...

[Andrew McMillan]

On Tue, 2007-03-27 at 23:03 -0600, m h wrote:
> On 3/27/07, Keith Packard <keithp at keithp.com> wrote:
> > On Tue, 2007-03-27 at 21:16 -0600, m h wrote:
> >
> > > $ xrandr --output LVDS --auto --left-of VGA
> > > xrandr: screen cannot be larger than 2048x2048 (desired size 3320x1200)
> >
> > DRI, Xv, and much of the Render acceleration all use the 3D engine which
> > has the 2048 limit. We may have gotten these checks in place, but I'm
> > not sure. What I do is use --below to stack the screens vertically
> > instead of horizontally, but that may not work for you either. You can
> > try setting the size higher; I'm not sure we've tested that very
> > carefully though.
> 
> Good to know about DRI, Xv, etc.  I tried below but I get the following:
> $ xrandr --output LVDS --auto --below VGA
> xrandr: screen cannot be larger than 2048x2048 (desired size 1920x2250)
> 
> Is there a way to indicate only use upto to 2048?

Hi,

You can use --pos 0x848 to position the "below" screen with a 202 pixel
overlap.

It's a shame that the 2048x2048 limitation is just too small.  Readily
available _single_ screens are pushing that.

For me I have just disabled all of DRI, Xv etc in order to be able to
extend my desktop, but I wonder what the timeframe will be for the 3D
engine to get that limit removed...

Cheers,
					Andrew McMillan.

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