Flickering/depth problems on HD4350 and Ubuntu Maverick alpha's

[Dr. David Alan Gilbert]

* Michel D?nzer (michel at daenzer.net) wrote:
> On Mon, 2010-08-30 at 01:15 +0100, Dr. David Alan Gilbert wrote: 
> > Hi,
> >   I'm running an HD4350 (RV710) on an Intel i7, and I'm running the current
> > ubuntu maverick alpha series and I'm seeing what to me appears to
> > be a depth/layering problem.  This worked on the Ubuntu Lucid version
> > with the xorg-edgers set - I haven't tried Maverick with edgers or
> > lucid without yet.
> > 
> > The simplest example is on the game Assault Cube; it's a pretty
> > standard quake clone like thing with a 3d landscape which you wonder
> > around pointing the normal assortment of weapons.  However
> > on these newer versions I'm seeing the weapon and some of the menus
> > and stuff only be visible some of the time - so the weapon sometimes
> > flickers in and out of view and some of the landscape appears and
> > disapears as well.
> > 
> > I've also noticed on Google Earth that during startup I can see
> > what appears to be throught he planet and the back of it; this settles
> > down once I zoom in, but even then I see all of the overlay data
> > (roads, pointers to photos etc) flicker on and off to be replaced by
> > just the underlying satellite view.
> > 
> > How many other people are seeing this - is there any useful
> > diagnostics I can try?
> > 
> > It's using KMS; the only warning seems to be about Color tiling
> > not being support on R600/R700.
> > 
> > 2d seems fine.
> 
> I think this should be fixed by Mesa Git commit
> 646d2e9fbc41bf49075013009e9583bec4a51168 ('radeon: Add DRI2 flush
> extension support, so we synchronize properly.').

Thank you!  That works nicely; it patched reasonably easily against
the Ubuntu packages. Both assaultcube and Google earth (after
I remembered the 32bit libs) work nicely with it.

I've filed an Ubuntu bug:
https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/626943

and also built the modified packages in an  ubuntu ppa:
https://launchpad.net/~ubuntu-treblig/+archive/mesafiddle

(Getting Google Earth to work is a bit fiddly given the binaries
are in the ia32-libs package, so I did some manual copying around).

Dave
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