Comment 14 for bug 1887294

I don't know how clear it was before, but it's the same for me -- it happens when I connect or disconnect a monitor. It's a TV screen, and doesn't turn off automatically, so I make it turn on and off (using an RS232-based protocol over a separate cable). When turned off, the TV appears as disconnected from the computer, the desktop layout changes, etc.

The problem happens whether or not I have another, normal monitor connected.

One difference is that it won't actually shut down if I issue the shutdown command over SSH (or press the power button), it starts the shutdown process but then hangs.

This should be a pretty normal use case for laptops, so I'm surprised that not more people see it. Maybe it appears on desktop GPUs only, or that it resets when the computer is suspended (as would often happen after disconnecting a monitor laptops).