Help: resolution problem with Radeon 9250 + Linux + X-6.8.2

[Josh Triplett]

Jeremy Henty wrote:
> I've been happily using X.org 6.8.2 (with DRI) on Linux 2.6.17.13 ,
> Radeon 9250 , 1280x1024 resolution.  But when I upgrade to Linux
> 2.6.18 it starts in 640x512.  I can't Ctrl-Alt-[+-] to anything else.
[...]
> Nothing makes any difference - under Linux 2.6.17.13 I get 1280x1024
> without problems, under Linux 2.6.18 I can't get anything except
> 640x512 .  My xorg.conf (attached) is pretty minimal.  I haven't tried
> writing mode lines yet.
> 
> Any suggestions?

Two suggestions:

* Compare the .config options for the two kernels, and make sure
nothing unexpected has changed.  If in doubt, post the .config files and
their diff here.

* If all else fails, try doing a git-bisect search on Linux, to find out
the exact Linux commit which breaks things.  Post the results here.

- Josh Triplett

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