I had the same issue in an Intel integrated graphics card (Core i3-2120T). My whole session would just die.
My system is in Danish, so I am unsure if it is the power saving option mentioned by @emanuel-pirsch I have disabled, but I went to the power settings and disabled the second option that translated says something like "Dim monitor on inactivity". This makes no sense enabling on my computer since it is a desktop system with an external monitor. The result is that it seems to have helped. It makes me wonder if there is some sort of hardware detection that has a bug? -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1722353 Title: Screen blanking and/or screen lock crashes gnome-shell user session on wayland - Ubuntu 17.10 beta To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1722353/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
