Seeing this with a Lenovo T480. Laptop display + USB-C dock with a DisplayPort and HDMI out. No issues with the HDMI connection, but the DisplayPort connection is where I was having issues. If the system detected the Display Port monitor it came in as a disabled monitor. If I enabled it, then all screens would go blank and I would have to force the laptop off to recover. Currently booting back into 4.15.0-43 without issue.
-- 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