Happened to me in 17.10. Like @fcole90 seemed to happen after unlocking my session after unsuspending my machine in the morning. The unlocking itself seemed to be stuck displaying some message about letting me continue in a few moments, but it never did. I used ctrl-alt-f6 then crtl-alt-f7 to 'wake it up', and that causes an unlock dialog to finally appear.
Apologies for the vagueness of this! -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1543192 Title: Xorg crashed with SIGABRT in OsAbort() ["no screens found"] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1543192/+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