Same for me as well, but running Dell XPS 13 with a Dell WD15 docking station. The scenarios for me have been:
1, When changing the screen resolution on my laptop, both screens turns blank and I have to reboot the computer 2, If power saving for the screens kicks in. I have to reboot the computer. After downgrading to 4.15.0-43-generic the problem disappears. The computer is still responding to ping when pinging from another machine tough. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813765 Title: Freeze on Lenovo laptop in dock station To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813765/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs