A fix for deck dock not recognizing HDMI out

So I have been having a problem where the dock just would not recognize HDMI in both desktop and handheld modes. I tried every fix I could find to no avail.

Then I started thinking it could be about KDE and not the deck or dock. So I found that you can reset monitor configs by deleting ~/.config/kwinoutputconfig.json. You have to do this while your logged out of KDE. The easiest way I found was to add dolphin file manager as a non steam game and remove the config in handheld mode.

After that I did a hard reset holding the power button till the light flashes a few times and powering on with the dock connected to HDMI.

This allowed me to get things working again.