Hello, It looks like i had a kind of hw issue. Some time aog i found that a cooler on my video card did not work properly.
> Damir R. Islamov wrote: > > Package: xserver-xorg-video-ati > > Version: 1:6.9.0+git20081129.783cdb73-1 > > Followup-For: Bug #507254 > > > > > > I´m able to reproduce the bug with different snapshot of the driver: > > git20080827.38aa450f > > git20081129.783cdb73 > > git20081214.f9826a56 > > > > With all of them my system hangs. However i can access via > > ssh and reboot it manually. > > > > Upgrading to experimental/downgrading to unstable gives the same results. > > Playng with EXA<->XAA changes nothing. > > > > I should add that i can observe all symptoms from > > #490071, #479870, #462590, #461580(except ssh). > > Your X seems to be using AGPMode 8. Maybe this mode isn't actually good > for your box. Can you try AGPMode 1, 2, 4 instead? Or even add Option > "BusType" "PCI"? > > Brice -- Sincerely yours Damir Islamov