Blank screen during upgrade

Upgrading a Dell Latitiude 7285 laptop from F40 → F41 and in order to track the progress I hit ESC to hide the progress bar and reveal the console.
It came up briefly, but when I pressed ESC again the screen has gone blank and I’ve got no guidance on how the upgrade is progressing, or even if it is progressing.

I’m concerned that we’ll end up with a broken environment if I try a hard reboot. Currently they keyboard caps lock light is responding, and I can ping the machine over the network, but the display continues to be blank.

Had anyone seen this issue before, and any guidance on how to proceed.

Ok so the upgrade did finally complete, just took a long time (~ 2 hours) of a laptop with a blank screen before it rebooted and came back to life.

Anyone else seen the blank screen issue?