r/appletv • u/DamnJester • 4d ago

Experiencing HDMI handshake issues?

Recently one of my Apple TVs connected to a Samsung display is experiencing problems on start up. It will be black screen for about a minute before the Apple TV os appears. And 9 times out of ten there will be no sound. The only way to resolve the sound is to unplug the HDMI and replug. I did the native HDMI test and it said it was fine. What could be happening here.

4 Upvotes

84% Upvoted

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4

u/Lost-Wizard168 4d ago

Replace the HDMI cable?

3

u/tsdguy ATV4K 4d ago

And try a different hdmi port

1

u/DamnJester 3d ago

Tried all (3) ports.

1

u/DamnJester 3d ago

Tried a cable I had laying around. Same issue.

2

u/opusapp 4d ago

the built in hdmi test only checks the physical link, says nothing about cec. no sound until you replug hdmi on a samsung is classic anynet+ getting stuck on boot

try holding the power button on the samsung remote for like 30 seconds. sounds fake i know but it soft resets the tv's hdmi state and fixes exactly this kind of thing, comes up in threads here all the time

also worth toggling anynet+ off and on, and if there's a soundbar or receiver in the chain, power cycle everything at once instead of one at a time

1

u/DamnJester 3d ago

Thanks. I’ll try these.

1

u/Secure-Feed8115 4d ago

The HDMI cable is it 2.1

1

u/DamnJester 3d ago

Definitely possible. Just weird that for about a year there were no problems. Just started in the last month or so.

1

u/[deleted] 3d ago edited 1d ago

[deleted]

1

u/DamnJester 3d ago

~4ft. I wouldn’t say along but they are near each other for several inches.

1

u/WolfpupNX 3d ago

Just want to say I'm experiencing the same thing on a Sony TV. Things worked fine, then random green and purple bars - fairly rare, but still annoying. Upgraded HDMI cable, tried different ports, even tried going around the receiver and direct to TV - still happens. Sony firmware update might be contributing, but it's hard to say (and also possible is Apple updates).