I suggest installing the Xorg debug symbols and then attaching gdb to it while it's using 100% CPU. Do that a few times and you should get a good idea of the stack trace.
A lazier way to do it would be to just kill Xorg with a fatal signal, upload the resulting crash file (ubuntu-bug /var/crash/...) and see if the robots have any luck providing a stack trace. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/2033433 Title: Xorg 100% CPU and frozen desktop after closing chromium To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/2033433/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

