I opened a ticket regarding dock issues when the update rolled out. I got a response from Valve saying that they are able to reproduce the issues and are working on a solution. /fingers crossed

I am also having this issue. I followed all steps within the troubleshooting article but the issue remains.

Specifically, resetting the dock gets the image back but only temporarily. When I sleep/shutdown and turn the Deck back on, no image again.

Where can I find the display model number?