I think hidden away in one of the video options on the 360 is an auto detect feature for hdmi - might be worth switching it on and off|
When i looked at it it did something with the audio over hdmi, so might be worth a look there
#9029317, By alasdairm Bizarre 360 HDMI and TV problem.
alasdairm 158 posts
Seen 13 hours ago
Registered 9 years ago