On the surface, this looks as if it might be a problem somewhere in X-Windows or the software that sits on top. The first step would be to capture the last ~200 lines or so of ~/.xsession-errors and post it here.
The next step is to capture some information about what is happening during the freeze. The first thing you can try is to do Ctrl-Alt-F1 when a freeze occurs to bring up a low-level console and run top from there. If the system won't accept the key combination during the freeze, try the following. Remember that you can use Ctrl-Alt-F7 to get back to your desktop. 1. Make sure you have an SSH server running on the machine that freezes. 2. Run a SSH session to your freezing machine from your other machine. Use the low level console to avoid the possibility of it freezing also. 3. Once you are logged into your target machine, wait for a freeze then observe what top says. 4. Report back with success or failure, then we can see what the next step needs to be. BTW it would be helpful if you set your geographic location in your Launchpad profile so we know roughly what time you are likely to be available. -- Karmic Frequently Hangs with 100% CPU https://bugs.launchpad.net/bugs/473722 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
