Confirmed same issue on Thinkpad T480 with docking station. One external monitor over HDMI 1440p @ 60Hz. Issue also occurs occasionally upon resuming from suspend with no external monitors attached. Occurs every time with monitor attached on boot, resume, screen lock, or display sleep.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813663 Title: External monitors does not work anymore 4.15.0-44 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813663/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs