I can confirm that with switched off compositor (KDE, Shift-ALT-F12) resume is working. But I think the compositor act as trigger only and is not the reason for the bug.
I've attached the relevant journalctl output of a current unsuccessful resume. I started the sleep at 13th april about 20:28:06 and tried to resume about 20:28:20. Some minutes later I logged in via ssh and initialized a reboot. ** Attachment added: "Journalctl output of an unsusccessful resume" https://bugs.launchpad.net/ubuntu/+source/plasma-desktop/+bug/1849084/+attachment/5353469/+files/journalctl-20200413.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1849084 Title: Freeze on system-resume caused by kwin and amdgpu driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kwin/+bug/1849084/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
