HDMI Output keeps Turning On and Off

[nheather]

Anyone see this weird problem.

I have a Home Theatre Gaming PC with an EVGA GTX 960.

I am taking two HDMI outputs from it, with duplicated display.

One is going to the Yamaha AVR for audio. The other is going direct to the Sony TV for video.

There is a reason I am trying to do it like this. Yes I know I could just route it through the AVR and if I do this it works fine.

But doing that means everything uses the same input on the TV which is optimised for CINIMA so has a high input lag. I want to take the Gaming PC to a dedicated TV input optimised for gaming.

This is what happens.

If I select the 'Cinema' input on the TV so watching the PC routed through the AVR it works fine (but with the input lag).

If I select the 'Game' input on my TV it appears to work at first but then I notice that the sound is regularly switching ON and OFF. Looking at the AVR front panel display I can see the HDMI input from the PC switching On and Off.

Anyone seen anything like that - been through all the AVR settings so I'm beginning to suspect it is something at the GFX end.

Cheers,

Nigel

 

[imginy]

Are you on windows 10? Since upgrading to windows 10 every time my computer goes to sleep the hdmi sound stops working until reboot. Only solution seems to be don't let it sleep.

I understand your frustration with running it via the surround because I do same thing and because of this most time I end up watching tv in game mode. I would much rather watch it in true cinema but can't be bothered to switch modes every time.

 

[nheather]

It is Windows 10 but I don't think it is anything to do with going to sleep because it happens continuously.

Litterally it will work for say 5 secs and then switch off for 2 secs, then on for 5 secs etc.

Cheers,

Nigel

 

[imginy]

Surround sound systems can suffer really bad from interference so it would be worth testing your sound via 2 tv's to check if the sound is actually cutting out or if it is interference.

I know my picture on mine cuts out anytime I turn the dishwasher or tumble dryer on and wierdly the other night when going to bed I switched kitchen light off and it switched the surround sound radio on in the living room.

Also have you thought about running optical from pc to surround? It works a lot easier than hdmi. The only downside is you can't get 5.1 in games (unless you have dts connect) but if it's just for movies optical is a lot simpler.

 

[nheather]

Don't think it is interference - too regular. The signal is dropping completely at a regular frequency.

I have done the sort of experimntation that you have suggested.

This is what I have - two duplicated outputs from the GFX, one HDMI and one DVI with HDMI adaptor.

The DVI+Adaptor is rock solid, but the HDMI cuts out at regular frequecy.

Intially I had the HDMI going into the AVR so what I observed was the sound cutting out at a regular frequency - the picture viewed on the TV via DVI was fine.

As an experiment, I swapped them around - DVI to AVR and HDMI to the TV. This time the sound was solid and the picture cut out at a regular frequency.

So it is definitely the whole signal cutting on the HDMI at a regular frequency.

Incidentally, if I remove the DVI and just use the HDMI through the AVR it is rock solid.

So the issue only occurs when I am using both the HDMI and DVI at the same time.

Cheers,

Nigel