Hi Tormod and Chris, Thankyou for the great responses so far! But unfortunately still no luck. Let me explain the results of what happened after I tried what was suggested.
I tried looking into the CPU and GPU issues that people were mentioning but, after having the computer running for 8 hours straight the CPU was sitting at 40C and the Graphics GPU was sitting at 27C (C = degrees Celsius). I put a lot of effort into making sure that my entire setup stayed cool and it seems to be doing that nicely. So I think I can rule out overheating as the problem. > Are you using the proprietary nvidia driver? Or nouveau or nv? The > best is if you can try the latest development version of your > distribution and file a bug there if you can reproduce it. > I am currently running the latest version of the nvidia drivers that I downloaded from Nvidias own website. (Before that I tried the latest Nvidia drivers that were packaged with Ubuntu and I moved away from them because the problem persisted). I just checked if there are any more recent drivers that I could be using and there are not: I am using the latest Nvidia drivers. > Try also running without xmonad (not that I really suspect xmonad is > at fault). At the gdm login screen you can choose a "failsafe > terminal" as session, which will give you an xterm without any window > manager. Alternatively you can switch to a virtual console, stop X and > gdm by running "sudo stop gdm" and then start a bare xterm session by > running "xinit" - as long as you have not created a .xinitrc to start > other stuff of course. > Well I ran a failsafe X session and the problem did not appear after an hour or two of use, but that does not really mean anything because sometimes it does not happen for hours; I still do not know how force the problem to happen (I do not know how to reproduce it) just that it happens in normal operation. I will try this again soon. > You said the problem appears after some time. Does a restart of the > xserver fix it temporarily again or do you need to reboot? A restart of the xserver seems to fix the problem without the need for a hard reboot. When I encountered the problem again just minutes ago (after about six hours of waiting) I shutdown gdm with sudo stop gdm and then ran xinit it all came back up without any problems and without X using up alot of my CPU. I do not know what that means but it does answer your question. So yes, rebooting the machine works but restarting the xserver also works too. Thanks and I hope this begins to lead us in the right direction, Robert
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