This feels very multi-monitor centric. I have had it numerous times overnight. I have 2 external displays permanently attached, so 3 displays active in total, at most times. This is sometimes triggered overnight, probably when a notification comes in and triggers the displays to wake up.
This morning I noticed one display was off, like it was receiving no signal. But it is there in gnome display settings. So I try and turn it off and on again in there. But that causes the display corruption to appear, and it locked up. I had to hard reboot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871687 Title: System hard locks up intermittently To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1871687/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
