Re: commit b1ee26b "radeonfb: accelerate imageblit and other improvements" freezes system on switching from X to text console

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Tue, 2008-11-25 at 20:44 +0100, Gaudenz Steinlin wrote:
> Hi Ben
> 
> The changes in the commit mentioned in the subject freeze my system when
> changing from X to a text console. The system freezes with a garbled
> display. Reverting this commit fixes the problem.
> 
> The freeze only happens if DRI is enabled in X. It also does not happen
> if I simply switch between different text consoles. 
> 
> My system is a PowerPC PowerBook G4 15" (PowerBook5,8) with a ATI
> Mobility Radeon 9600 M10 graphics card. I'm running X.org 1.5.1 with the
> radeon driver version 6.9.0+git20080826.a3cc1d7a from Debian
> experimental.
> 
> Sorry, I don't have the knowledge nor the time to fix this myself, but I
> would be happy to test an improved patch. Please also feel free to ask
> if you need more information.

It's annoying as I have approximately the same machine and couldn't
reproduce the problem lately (slightly different X version though, from
Ubuntu intrepid).

I'll give it another go.

Cheers,
Ben.