problem with i830M interlaced VGA output (915G works fine)

[Thomas Hilber]

On Mon, Oct 06, 2008 at 09:58:57AM -0700, Keith Packard wrote:
> On Sun, 2008-10-05 at 09:21 +0200, Thomas Hilber wrote:
> > Hi list,
> > 
> > with the attached patch and xorg.conf I successfully use interlaced modes
> > like 720x576i on a 915G chipset. For an i830M this unfortunately does not
> > yet work completely. First of all thanks to Keith Packard and 
> > Krzysztof Halasa for their basic PIPEACONF investigations posted here:
> 
> I845 and earlier chips (I didn't look at the i855 or i865) do not
> support interlaced display at all.

but it's quite strange. Even my i810 is running in
interlaced mode (i.e. 720x576i) with exactly the patch above with no
problems at all.

OK, but if there is an 'interlace gap' between and including i830 - i865 then
I will stop to find a solution for this issue.

anyway, thank you for your answer!

- Thomas