trombo22

macrumors member
Original poster
Jan 25, 2013
69
12
When I first purchased my Apple TV 4, everything worked as expected but sometime around tvOS 11 not sure the exact timing but when I wake from sleep the Apple TV sets resolution to 720p and audio to 2.0. I'm running HDMI from apple tv through receiver to TV.

If I restart the Apple TV(while leaving the tv and receiver on) it will set surround sound and resolution to 1080p.

I have a Integra 40.7 and Vizio can't remember the exact version but was the last version before then new smart cast.
 

jerwin

Suspended
Jun 13, 2015
2,895
4,649
Do you have the resolution set to "Auto", or do you have "1080p" selected?
 
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trombo22

macrumors member
Original poster
Jan 25, 2013
69
12
Do you have the resolution set to "Auto", or do you have "1080p" selected?
I have everything set to auto currently, I have tried setting to 1080p but the unit still switches to 720p after a sleep(tv and receiver off/on via HDMI-cec). When I select 1080p is says this is unsupported resolution or something like that but it does work.
 
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trombo22

macrumors member
Original poster
Jan 25, 2013
69
12
Are u using HDMI 1.4 or 2.0 cables?
I looked on the site for the exact HDMI version but it was not listed just said HDMI certified "Certified Premium High Speed HDMI Cable, 4K @ 60Hz, HDR, 18Gbps, 24AWG, YUV 4:4:4, 20ft, Black" from monoprice.
 
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Mrbobb

macrumors 601
Aug 27, 2012
4,992
196
I looked on the site for the exact HDMI version but it was not listed just said HDMI certified "Certified Premium High Speed HDMI Cable, 4K @ 60Hz, HDR, 18Gbps, 24AWG, YUV 4:4:4, 20ft, Black" from monoprice.

I suggest move the devices closer, for testing purposes only, and use a shorter cable, 6-10 foot.

https://www.videopro.com.au/t-hdmi-demystified.aspx

The first paragraph after META METADATA.
 
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trombo22

macrumors member
Original poster
Jan 25, 2013
69
12
I'll do some testing this weekend with cables and bypassing devices to see if I can pinpoint what device/cable the issue is coming from.
 
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trombo22

macrumors member
Original poster
Jan 25, 2013
69
12
you could always turn off sleep and or CEC.
The main issue with this is I have all my devices in a ventilated cabinet in basement and the only remote I use to turn on/off tv/receiver is Siri remote via CEC.
 
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trombo22

macrumors member
Original poster
Jan 25, 2013
69
12
So I think I have narrowed it down to the tv. If I have the TV turn on first I can sleep and wake all I want and everything appears to work. I purchased a simple passthrough HDMI EDID(Always sets 1080p) for $15 that I will try on the tv HDMI cable when it arrives.

My assumption is that for EDID info my surround sound receiver will passthrough the TV info and overwrite the audio info to pass to the Apple TV?
 
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