@kaihengfeng - tested Hibernate function (with kernel 4.15 with patch applied) on Ubuntu 18.04 with a swap file and Kubuntu 18.04 with a swap partition on the same machine.
Both experienced same issue in the same way - hibernation starts, system freezes with screen off and powerLED on (instead of shutting down by itself), after forced shutdown hibernation resumes as if it all went fine. Using the swap file or swap partition did not seem to affect the behaviour. Both completed hibernation cycle without issue using kernel 4.14. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1774950 Title: Suspend fails in Ubuntu and Kubuntu 18.04 but works fine in Ubuntu and Kubuntu 17.10 (and on Kubuntu 18.04 using kernel 4.14.47) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1774950/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs