[Intel-gfx] Several regressions in KMS vs UMS mode

[Jesse Barnes]

On Fri, 4 Dec 2009 08:11:07 +1100 (EST)
"Robert Lowery" <rglowery at exemail.com.au> wrote:

> > On Thu, 3 Dec 2009 21:48:15 +1100 (EST)
> > "Robert Lowery" <rglowery at exemail.com.au> wrote:
> >
> >> Folks,
> >>
> >> After recently upgrading to my GM965 based AOpen MP965DR MiniPC to
> >> Ubuntu Karmic (9.10), I have noticed several regressions when
> >> running in KMS mode
> >>
> >> 1) My 1080p Sony VPL-VW50 projector comes up by default in 1024x768
> >> mode instead of 1920x1080
> >> 2)  My CRT TV which is attached via component video no longer comes
> >> up in 576p mode as specified in xorg.conf (I have tried specifying
> >> both "TV Format" and "mode" options)
> >> 3) Margin settings in xorg.conf for the same TV are being ignored.
> >
> > Have you filed bugs for these issues?  I think we only recently
> > added a few TV properties in the KMS case (though the old ones
> > should have worked too).
> Not yet, I was first looking for confirmation that it was not just a
> configuration issue.  xorg.conf always seems to be hard to get just
> right and it looks like with KMS the TV output became TV1 and the "TV
> Format" option became "mode".  Can someone please look at my
> xorg.conf and confirm it looks ok?
> 
> Also, Is the 2.6.32 kernel likely to have already fixed any of these
> issues?
> 
> I'm happy to submit them if they appear to be real issues.

They sound like real issues, I wouldn't be surprised if the first
problem was an EDID fetching bug like ajax mentioned.  The other two
may be related to the way our KMS usermode code interacts with the
kernel; I don't think they're likely to be fixed in 2.6.32 but I
haven't looked at the TV patches that went in recently.

-- 
Jesse Barnes, Intel Open Source Technology Center