Have you disabled “HDR autoswitch”?
Well first step could be trying another HDMI cable.
If that doesn’t help and you have HDR autoswitch disabled than you could comment out the rc.local command via sudo nano /etc/rc.local
Have you disabled “HDR autoswitch”?
Well first step could be trying another HDMI cable.
If that doesn’t help and you have HDR autoswitch disabled than you could comment out the rc.local command via sudo nano /etc/rc.local