Everyone affected by this bug, please try 4.15.0-43. This fixes the issue completely for me (without needing to blacklist mei).
This seems to have been the culprit: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803942 System randomly hangs during suspend when mei_wdt is loaded (LP: #1803942) - SAUCE: base/dd: limit release function changes to vfio driver only @ Nadi: God jul! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1801743 Title: Suspend fails in Kubuntu 18.04 but works fine in Kubuntu 17.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1801743/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs