@cmeerw - It took me a while to realise that getting hibernate to work on 18.04 required adding the kernel parameter 'resume=UUID=uuidofswappartition' (and also 'resume_offset=' if you're using a swap file) to /etc/default/grub.
(Ubuntu 16.04 and Kubuntu 16.04 will hibernate happily without the 'resume=' parameter added, so I was starting to wonder if hibernate was working on any machine after 16.04!) Tested using `sudo systemctl hibernate` on the HP Pavilion N3540 with suspend issues. The results are the same for both Ubuntu and Kubuntu 18.04. kernel 4.14.47 - Hibernate function works as it should kernel 4.15.0-24 (with patch applied) - Hibernate begins as normal but system does not shut down by itself. PowerLED stays on. Machine unresponsive. Holding down the power button to force shutdown is required. - Upon reboot, the system resumes from where it left off, as if hibernate had worked fine. --kern.log entries look the same irrespective of whether the system hangs and requires forced shutdown. PM: hibernation entry PM: Syncing filesystems ... - (timestamp gap of about a minute before next entries - shutdown then reboot) - PM: done. Freezing user space processes ... (elapsed 0.001 seconds) done. OOM killer disabled. PM: Marking nosave pages: [mem 0x00000000-0x00000fff] etc... So hibernate almost works as it should but requires a forced shutdown in the 4.15.0-24 kernel with the patch applied. (Also tested a machine that doesn't experience suspend issues and hibernate works as it should with standard up-to-date Ubuntu 18.04 with kernel 4.15.0-23) -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
