I'm not finding much in the logs. There's some i915 splat which could possibly be related to the corruption, but nothing to explain the hard lockup.
The current focal-proposed kernel (5.4.0-24) has some fixes for races/deadlocks in i915, so it's worth trying that out to see if it helps. You can use ppa:canonical-kernel-team/proposed to get that kernel. -- 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
