[BigTreeTech HDMI 7 no video output]

I feel like I should mention I'm using an older version of Armbian because Colton's fix doesn't work on the last version. I'm using 24.2.1 Bookworm.

[HDMI output stopped working]

I had the same issue. Not able to see an hdmi output unless i used a usb-c to hdmi dongle. I was able to restore hdmi output using the instructions in this post:

Could be an issue with cheap displays only? The display I'm using is a RCA tv so I'm not really sure.

[BigTreeTech HDMI 7 no video output]

I was having the same issue and used Colton's solution. Worked like a charm, thank you.