I think this is a bug in X Windows rather than tuxmath as what you've described happens when X crashes (it goes back to the login screen). I presume the machine doesn't reboot.
I've added xorg to the bug - they will need to get information from you in order to work out what's going on. -- X crashes when I run tuxmath https://bugs.launchpad.net/bugs/402706 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
