this post helped me a lot: http://ubuntuforums.org/showpost.php?p=8716453&postcount=2
-- Unexported $DISPLAY prevents `at' from executing GUI apps https://bugs.launchpad.net/bugs/94933 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
