Comment 20 for bug 1956383

Please note that the kernel currently running (5.13.0-22) is NOT the one with the reported problem.

Linux kernel 5.13.0-23.23 is the one that has no video after reboot, when the graphic login (greeter?) should have appeared.

Ctrl-Alt-F1 to F7 are not working, but I see a flicker (for a fraction of a second the monitor is going completely black, like unpowered, then returns to blank with backlighting visible).

By the way, are Ctrl-Alt-F1 to F7 supposed to still work? Don't know if anything changed in this respect the last few years (Wayland instead of X11).