fglrx driver / 1024mb ram

[Martin Jordan <fanti at spin dot de>]

hello,

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.

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

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

if i detach one of the both 512mb ram modules, fglrx works fine.

thanks for your help.

martin

-- 
Martin Jordan - SPiN AG
fanti at spin dot de