I had a problem after updating to Ubuntu 15.04 which same logs in xsession-errors. After many tests I determined that I had the files "start" and "stop" in /home/{user}/bin which was added as path. upstart- event-bridge seems to use start and stop also and may not use a full path calling.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1432317 Title: [systemd] should now depend on systemd/upstart, not upstart-bin To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1432317/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs