Intel driver

Jesse Barnes jbarnes at
Tue Jul 17 17:07:49 PDT 2007

On Tuesday, July 17, 2007 4:23:32 Lukas Hejtmanek wrote:
> On Tue, Jul 17, 2007 at 03:15:40PM -0700, Jesse Barnes wrote:
> > Thanks Lukas.  So if you use Option "Tiling" "false" your 915
> > overlay works?  And does textured video also work with tiling and
> > framebuffer compression disabled?
> >
> > Hopefully disabling both fixes both video problems, otherwise I've
> > broken things worse than I thought. :)
> Yes, disabling tiling fixes both problems. On the other hand,
> disabling tiling causes that back buffer nor depth buffer is tiled.
> In the previous versions of the driver, these two buffers were tiled.
> But if you fix the tiling, it would be great.

Right, I think that's the correct way to fix this problem.

> Btw, you commented somewhere in the driver, that i915 chipset is able
> to compress only Plane A, if I understand correctly. But on laptops
> with i915GM is only Plane B used usually, so the compression cannot
> be applied?

Correct.  That's something I have to fix, otherwise you'll only get 
compression for your external VGA connector in non-cloned mode. :)

On 965 it doesn't matter (fortunately), since either plane can be 


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