When the freeze happens next, please do this:
1. Switch to a virtual console: Ctrl+Alt+F1 and log in.
2. Run:
gdb `which compiz` `pidof compiz` | tee /tmp/compizbt.txt
3. At the (gdb) prompt type:
bt
quit
4. Revive your desktop by running:
sudo restart lightdm
5. Attach the file /tmp/compizbt.txt to this bug.
Thanks in advance. I hope we can make debugging steps like these simpler
in future :(
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https://bugs.launchpad.net/bugs/947443
Title:
Ubuntu 12.04 Beta 1 desktop freezes
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