I had two long phone sessions with Apple Care. They acknowledged the issue and relayed they'd try to have this addressed in the next incremental upgrade. In the meantime, I did find a workaround to stop the crashes (as first mentioned by a previous poster in this thread):
Open a video in Quicktime player and set it to loop. As long as it's running, I've experienced no watchdog timeout: no successful checkin demo com.apple.WindowServer" errors. YMMV
I had two long phone sessions with Apple Care. They acknowledged the
issue and relayed they'd try to have this addressed in the next incremental
upgrade. In the meantime, I did find a workaround to stop the crashes
(as first mentioned by a previous poster in this thread):
Open a video in Quicktime player and set it to loop. As long as it's running,
I've experienced no watchdog timeout: no successful checkin demo
com.apple.WindowServer" errors. YMMV