Seeing similar issue here on Intel NUC6i5SYH on Dell U3415Wb monitor on DP connector. Problem happens when manually switching monitor input from NUC Ubuntu 17.10 on DP connector to Mac laptop on HDMI connector on same monitor.
Also cleared my /var/crash folder and submitted two reports using ubuntu-bug after replicating problem (per @vanvugt instructions), one with filename _usr_bin_gnome-shell.1000.crash and another _usr_bin_Xwayland.1000.crash (also don't know where to use bug id) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1721428 Title: Artful (17.10) Session logout after screen turned off To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1721428/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
