Correction: not _epoll_, but _poll_. Again, it was a hack at trouble- shooting and may be unrelated.
Sorted Sauerbraten strace log snip: --- 11 poll([{fd=7, events=POLLIN}], 1, -1) = 1 ([{fd=7, revents=POLLIN}]) 11 poll([{fd=7, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=7, revents=POLLOUT}]) 11 poll([{fd=8, events=POLLIN}], 1, -1) = 1 ([{fd=8, revents=POLLIN}]) 11 poll([{fd=8, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=8, revents=POLLOUT}]) --- Generated by stracing sauerbraten in fullscreen mode, counting 10 rogue mouse pointer flickers, and exiting game. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1800749 Title: Ubuntu 18.10 doesn't like fullscreen mode for sauerbraten(game) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1800749/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs