I have the same issue. It seems like a X server crash left the stale lock file around. (I'm using Option "NoTrapSignals" "true" in xorg.conf, so apport gets to know about the X server crashes).
** Changed in: apport (Ubuntu) Status: New => Confirmed -- stale lock prevents apport runs https://bugs.launchpad.net/bugs/137567 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs