Re: fglrx driver / 1024mb ram

["Michel Dänzer" <daenzer at debian dot org>]

On Thu, 2005-03-31 at 18:15 +0200, Martin Jordan wrote:
> today i upgraded my notebook (ati mobility radeon x600, 64mb memory) from 
> 512mb to 1024mb ram. fglrx works fine with 512mb but with 1024mb xfree86 
> doesn't come up. the display just turns black and the cpu usage rises up to 
> 99% (used by xfree86).
>
> i recompiled my kernel (2.6.11.5) with highmem support (4gb) and also the 
> fglrx driver.

I assume you've double checked that the fglrx kernel module was
recompiled, reinstalled and reloaded correctly.

> cat /proc/mtrr says:
> reg00: base=0x00000000 (   0MB), size=1024MB: write-back, count=1
> reg01: base=0x3ff00000 (1023MB), size=   1MB: uncachable, count=1

Hmm, overlapping MTRRs. Is this also the case with 512 MB?

> any idea what makes the difference for fglrx between 512mb and 1024mb ram?

I'm not sure, as it's working fine here on several machines with 1 GB of
RAM or even more, but my guess would be it's most likely related to
highmem. What do you get if you grep for HIGHMEM in the kernel
configuration file?


-- 
Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer