OK, I'm going to have to go with the assumption that xorg is the problem here, since that is what's eating your CPU, and the problem doesn't seem to be based on any other applications being running. Now I need you to collect some detailed data:
Log out of your current session. Press Control-Alt-F1 to enter a text terminal, and log in there, Stop the display manager. If you are using Kubuntu, this should be done with sudo invoke-rc.d kdm stop If you started with an Ubuntu installation, you may still be runnning on gdm, so that would be sudo invoke-rc.d gdm stop enter the following commands: sudo dpkg-reconfigure xserver-xorg uname -a > uname.txt lspci -vvnn > lspci.txt sudo discover --disable=parallel,serial,usb,ide,scsi,pcmcia --format="%M\t%S\t%D\t%i\n" video > discover.txt Attach to this bug report the files created above (uname.txt lspci.txt and discover.txt) as well as /var/log/Xorg.0.log and /etc/X11/xorg.conf ** Changed in: xorg (Ubuntu) Sourcepackagename: None => xorg -- Kde freeze after approx an hour inaction https://bugs.launchpad.net/bugs/173682 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
