The only note-worthy log entries I see in that folder are in x-0-greeter.log, and I'm not 100% sure they're related to this bug, I've attached the log file.
I have just managed to reproduce this again: 1) I sshed into my machine from another machine to verify when my machine crashes 2) On my machine I hit ctrl+alt+L to start the lock screen 3) Waited a few minutes (not sure how long I actually need to wait) 4) pressed the num lock key At that point, the LED lights on my keyboard and mouse turned off, and the monitors displayed the "not connected" message. On the machine that I used to ssh with, the terminal had frozen. The reason I assigned this to lightdm is because I've reproduced this bug on the greeter screen where (I think) it's the only thing running, and it crashes the greeter leaving just the background image/colour displaying. ** Attachment added: "x-0-greeter.log" https://bugs.launchpad.net/ubuntu-gnome/+bug/1543782/+attachment/4648181/+files/x-0-greeter.log -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in Ubuntu. https://bugs.launchpad.net/bugs/1543782 Title: Complete system freeze some time after lock screen starts To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1543782/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
