This is expected -- you stalled X while in X. :) Try the gdb session from tty1 or after sshing in from another machine.
** Changed in: gdb (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/980693 Title: System freeze after attaching gdb to Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdb/+bug/980693/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs