Tried to get a backtrace according to https://wiki.ubuntu.com/Backtrace. I attached to the X process but could not interrupt it with Ctrl-c as decribed in the text, gdb died with Ctrl-c. Instead I skipped step 4 (continue) and did backtrace anyway. Don't know if it is any help but here it is anyway.
** Attachment added: "Backtrace while in lock-up state" http://launchpadlibrarian.net/20881762/gdb-X.txt -- spontaneous X lock-up: "mieqEnequeue: out-of-order valuator event; dropping." https://bugs.launchpad.net/bugs/275809 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