Can you try kernel parameter "acpi_osi=Linux-Dell-Video" for that?
That's a workaround that in ACPI uses old _DSM for Linux. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1774865 Title: 4.15.0-22 won't boot on Dell XPS 15 9570 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1774865/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
