Xorg 1.1.1 + Mesa 6.5.2 = White screens with i810 driver and beryl/compiz

Michel Dänzer michel at tungstengraphics.com
Mon Jan 8 07:18:13 PST 2007

On Mon, 2007-01-08 at 15:11 +0000, Colin Guthrie wrote:
> Michel Dänzer wrote:
> > On Mon, 2007-01-08 at 13:37 +0000, Colin Guthrie wrote:
> >> I think you should start to kick up a fuss on:
> >>
> >> https://bugs.freedesktop.org/show_bug.cgi?id=9456
> >>
> >>
> >> One of the Mesa devs will have to start looking at some point.....
> > 
> > I probably would have looked into it if I could reproduce it. But I
> > can't, so build issues need to be ruled out first. E.g., is everybody
> > making sure Mesa is built with -fno-strict-aliasing?
> I'm not sure about the -fno-strict-aliasing bit here I'll double check.
> How would I confirm this (configure option?, Makefile.am patch?). 

Look at the gcc lines printed by make and add it to the right *CFLAGS
variable in configs/* if it's missing.

> Do you need to build all of Mesa with this or just the DRI section 
> (the reports I've read mentioned that only i965 DRI required this 
> and as people with R200/300 etc. have this problem I'd kinda discounted it)

There are strict aliasing violations scattered all over the Mesa tree,
so all of it should be built with -fno-strict-aliasing to be safe.

Earthling Michel Dänzer           |          http://tungstengraphics.com
Libre software enthusiast         |          Debian, X and DRI developer

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