1680x1050 dual head on i810 (830M chip)

[Alan Hourihane]

On Thu, 2006-08-24 at 02:37 -0700, Konstantin Antselovich wrote:
> on 08/24/2006 12:51 AM Alan Hourihane said:
> > On Wed, 2006-08-23 at 17:20 -0700, Konstantin Antselovich wrote:
> >> Hi xorg gurus, need your help!
> 
> [skip]
> 
> >>
> >> (II) I810(0): Currently active displays on Pipe A:
> >> (II) I810(0):   LFP (local flat panel)
> >> (II) I810(0): Lowest common panel size for pipe A is 1024 x 768
> >> (II) I810(0): Currently active displays on Pipe B:
> >> (II) I810(0):   DFP (digital flat panel)
> >> (II) I810(0): No display size information available for pipe B.
> > 
> > Are you sure that your Samsung is connected via DVI ??
> > 
> > I suspect it's just the VGA connector, and in which case you should be
> > specifying CRT instead of DFP.
> 
> >
> > Alan.
> >
> 
> You're absolutely right, it's indeed connected via VGA.
> 
> So, I changed s/DFP/CRT/ and I got some encouraging results, but not a
> complete success.
> 
> Now [for me] it looks like X sets up a first screen (LFP) to the correct
> resolution, then it tries to set up a second screen (external VGA)  but
> eventually fails with
> 
> (EE) I810(1): No Video BIOS modes for chosen depth.
> 
> Then
> 
> (II) UnloadModule: "i810"
> 
> and tries to reset first screen and disables external VGA.
> 
> 
> II) I810(0): Display plane A is enabled and connected to Pipe A.
> (II) I810(0): Display plane B is disabled and connected to Pipe B.
> (II) I810(0): Enabling plane A.
> (II) I810(0): Display plane A is now enabled and connected to Pipe A.
> (II) I810(0): Display plane B is now disabled and connected to Pipe B.
> 
> and it and looks OK by looking at the log, but I do not see any image,
> just a backlighted black screen.
> 
> So, I attached config and full log.
> 
> Any ideas,

Unfortunately, your video BIOS is broken and won't allow it.

There is some work going on to avoid the BIOS for a future driver, so
you'll be in luck at some point. If you want to try the modesetting
branch from the git repository that's where the work is happening.

Alan.