Here is the relevant output from `dmesg -w`. I just realized I forgot to attach the log output from my last message (and I just overwrote it for this attachment), but after inspection there was no output (I guess that was apparent).
It seems that you're right - the async is the problem. The behavior was as expected with these tests. ** Attachment added: "out.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1865170/+attachment/5333886/+files/out.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1865170 Title: lid close simply turns off laptop screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1865170/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs