Hey, thanks for your responses. @Gan Lu: ATI canceled support for the proprietary driver for X1400. Using the vesa driver won't work because gnome shell requires hardware acceleration. @Simon: Actually I will try killing gnome-shell next time. I always killed gnome-session or the xserver. or simply stopped gdm. We seem to have different problem though. I use CTRL+ALT+{UP,DOWN} quite a lot and it never hung up when switching between workspaces. @Roman: Doing vmstat 2 > vmstat.log & now. Actually I don't know what to do with the information after a crash but it will provide more insight. If anybody else experiences similar problems, please comment. On 03.11.2011 12:38, Roman V.Leon. wrote: > >> Dear arch users and developers, >> >> I have posted this issue also in the archlinux forum [1]. I didn't get >> much feedback there. So I'm hoping some people here might have an idea >> of how to resolve the problem. >> >> Problem: >> gnome shell freezes from time to time (actually daily). >> >> Freezing: >> "Freezing" means, the screen becomes unresponsive but everything seems >> to continue working (sound and videos continue playing; even the mouse >> pointer can still be moved). Most of the time I'm able to switch to a >> virtual console although sometimes it takes 10-20 seconds after >> CTRL+ALT+F1 to show up. Then, however, everything is running smoothly. >> It's not possible to restart X since it will freeze again at the gdm >> login screen, or even without using gdm when loading the desktop. >> >> What triggers the problem: >> Usually it happens while scrolling on websites or pdfs. I feel like it >> happens more often if there are large images. >> >> Hardware: >> IBM T60 >> ATI X1400 >> >> I think it's an issue with the open source radeon drivers. However, this >> problem doesn't occur using other desktop environments. I tried to look >> into some log files but I couldn't find noticeable error messages. >> >> Looking forward to your suggestions, >> Max >> >> >> [1] https://bbs.archlinux.org/viewtopic.php?id=129481 >> > > Hi Max. Try to use system diagnostics tools like `vmstat 2`(2 is a > timeout) for example, probably you will find the key to resolve you > problem. By the way did you fill /etc/hosts with your PC's hostname ? >