ACPI errors have nothing to do with this. I can see the shell crash though:
[ 1752.941562] czy-Legion-Y7000P-IRX9 gnome-shell[3142]: GNOME Shell crashed with signal 11 [ 1752.941562] czy-Legion-Y7000P-IRX9 gnome-shell[3142]: == Stack trace for context 0x6095c4ec7260 == [ 1752.941562] czy-Legion-Y7000P-IRX9 gnome-shell[3142]: #0 6095c4f91ec8 i resource:///org/gnome/shell/ui/init.js:21 (295c8f670bf0 @ 48) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2117703 Title: The computer often crashes or goes black. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2117703/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs