I tried `v4.14.0-041400-generic` kernel, when I close & open lid it doesnt hang at all. I left lid closed for hours & it woke up like charm.
But when I checked `/var/log/syslog` & `/var/log/kern.log` there was no text about suspending. Not even single line was printed. So I think its entering suspend mode at all, but manages to turn off screen & backlight. Clicking suspend button or entering `sudo systemctl suspend` enters suspend mode & laptop gets stuck. holding power button is the only way to get back. The `syslog` shows text releted to suspend, here :Feb 13 19:50:41 pc systemd[1]: Starting Flush Journal to Persistent Storage... ``` Feb 13 19:48:54 pc systemd[1]: Reached target Sleep. Feb 13 19:48:54 pc systemd[1]: Starting Suspend... Feb 13 19:48:54 pc systemd-sleep[2788]: Suspending system... Feb 13 19:48:54 pc kernel: [ 6678.873054] PM: suspend entry (deep) ``` I tired another version `4.14.40-041440-generic` & closing lid enters suspend mode which causes hanging. It seems `v4.14.0-041400-generic` is only one who doesn't have this problem. If you want me to test any other version of kernel, feel free to ask. -- 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
