As a workaround you can try booting with "amdgpu.dc=0" Although I don't know if Vega supports disabling DC. With DC disabled, the GPU cannot know if your monitor has been turned off.
Another possible solution is to use an SSH session to try to restore your monitor, typing: DISPLAY=:0.0 xrandr --auto -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1916919 Title: after upgrade to 5.4.0-66 monitor remains black after off/on cycle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1916919/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
