I'm also affected, this is with a Radeon VII. The VT switching workaround can take many tries to work. This morning, when it didn't after ~20, I found this bug and tried the "DISPLAY=:0.0 xrandr --auto" tip via ssh. That in itself did not revive the display, but afterwards switching VTs suddenly helped. No idea if it's a coincidence.
Since this is a work machine that I need to stay up and usable, I'm reverting to the previous kernel for now. -- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
