Oh wow, that sounds highly inconvenient. I wish it was as easy to re-flash android TVs as it is to re-flash android phones. Best of luck, and keep us updated if you find a solution!

I’ve never used the tuner/TV part of my sony x900f, only HDMI inputs and apps. Is google pushing ads to live tv now?

this here is the real issue.

The update was meant to fix a situation where an attacker would somehow get grub onto a machine that was SINGLE booting windows and use grub to tamper with secureboot. this fix was meant to only apply in single boot situations where it should be entirely unexpected to see grub. as they said, something went seriously wrong.

Docker takes a lot of the management work out of the equation as many of the containers automatically update. Manual updates are as simple as recreating a container with a new image instead of your local one. I would like to add try running Portainer (a graphical management interface for Docker). Breaking out the various options into a GUI helped me learn the ins and outs of Docker better, plus if you end up expanding to multiple docker hosts you can manage them all from one console. I have a desktop, a laptop, and a RPi 4b all running various dockers and having a single pane for management is such a convenience.

Now tell us the pixel response time.