Thanks for the bug report. I can see two immediate problems. The first problem isn't really related to this bug but you should fix it anyway. Your log is being flooded by crashes in 'onedrive'. If you don't need 'onedrive' then consider uninstalling it.
The second problem is these messages in your Xorg logs which might be related to this bug: [ 87005.338] [dix] EventToCore: Not implemented yet [ 87131.437] [dix] EventToCore: Not implemented yet [ 87283.009] [dix] EventToCore: Not implemented yet Next we would like to see a system log of the problem happening so please: 1. Reproduce the bug again such that the machine is unresponsive. 2. Wait 30 seconds. 3. Do a "hard reboot". 4. Run: journalctl -b-1 > prevboot.txt 5. Attach the resulting text file here. 6. Follow these instructions to check for crashes: https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment ** Summary changed: - regression: no display when waking from suspend + [Lenovo ThinkPad T450s] regression: no display when waking from suspend ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Tags added: multimonitor ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1923381 Title: [Lenovo ThinkPad T450s] regression: no display when waking from suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1923381/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
