Thanks Roman. Here's more output from Xorg.0.log [1] and .xsession-errors [2]: For the xorg.log I included only the strange messages occurring very often. For the xsession errors I pasted the last 300 lines. Strange seems to be in xorg.log: [ 55102.137] (II) RADEON(0): radeon_dri2_schedule_flip:670 fevent[0x94aec70] [ 55102.147] (II) RADEON(0): radeon_dri2_flip_event_handler:1067 fevent[0x94aec70] width 1400 pitch 5632 (/4 1408) ..and in .xsession-errors: (gnome-shell:1182): St-CRITICAL **: _st_paint_shadow_with_opacity: assertion `shadow_spec != NULL' failed Maybe you can read out more... [1] http://pastebin.com/FCbbLicA [2] http://pastebin.com/2Q9yNsUD On 11.11.2011 21:30, Roman V.Leon. wrote: > 09.11.2011 22:56, Max пишет: >> Here's the dmesg output [1]. Can't find any error messages related to my >> problem. >> >> What do you recommend as a next step? >> >> -Max >> >> [1] http://pastebin.com/vbtqB1Yp >> >> On 07.11.2011 17:03, Paul Ezvan wrote: >>> Le 07.11.2011 12:39, Max a écrit : >>>> I logged vmstat 2 output [1]. Here are the last 300 lines that show the >>>> situation before and after the crash till I rebooted. I can't really >>>> read much out of it, but maybe someone else? >>>> >>>> For some reason this time it took a while for the problem to show up >>>> again (several days). I wonder if that has anything to do with me >>>> setting up a swap that I didn't use before. My main memory is more than >>>> sufficient though. >>>> >>>> @Tuxce: Killing the gnome-shell process restarts the gnome shell but >>>> will result in an immediate freeze again. The only solution is >>>> restarting the system. >>>> >>>> >>>> Thanks, >>>> Max >>>> >>>> >>>> [1] http://pastebin.com/CZiMj347 >>>> >>> >>> Maybe you have some error log in dmesg output ? >>> >>> Paul >> > Hello Max, i don't see anything strange in your vmstat output, such as > your dmesg. Could you please check .xsession-errors and > /var/log/Xorg.0.log, maybe there we'll see something. >