EVGATech_ChristianB
Supercherry,
 
I'm glad you were able to find that out after showing the hidden devices. Please update the thread if it comes back.

amosisreal

stalinx20
Nvidia doesn't really have "authentic" or viable audio anyway. They are a graphics company, not an audio company. I know this is not the answer anyone wants to hear when they want something to work, but honestly the best solution here is to take the SPDIF audio connection from your motherboard (or soundcard), and plug it directly into your receiver, or use the analog jacks. Then, uninstall those audio drivers that are for the graphics card. You may even get better improvements doing this.

I understand what you are saying, and I can work around this and run some extra cables.  I've gotta make sure my TV can handle an HDMI video source and a non HDMI audio source.  I think I'll have to use the DVI port to get that.  Are there degradation issues converting from HDMI to DVI?  
 
The issue is that if they are operating in HDMI space, then they should support audio, reliably.  I like the card, I have workarounds like you are saying, but it's a real nuisance compared to what I had on my previous nvidia card that worked as expected (but didn't look as good.)

JDR_Studios
I'm losing my mind trying to troubleshoot this exact same issue.

I was very happy with my 780 6GB card until someone offered me $560 for it, so I upgraded to the 980ti. Immediately after I experience this exact same issue. Every time I awake from sleep the 980 now sees my Onkyo receiver as TX-NR626-1, TX-NR626-2, TX-NR626-a, etc. and I have to go through flaming hoops to get it to work.
 
Sometimes it's as simple as going into audio devices and switching Default to the TX-NR626-1. Sometimes I have to set it, sleep, wake, set it again.
Usually I'm less fortunate and after setting Default Playback I just have to let it sit there playing a few songs before it magically begins to play whenever it feels like it (10seconds-8minutes)
 
When I do get it to work it appears to sleep the audio connection whenever it isn't playing, instantly after. If I play a song, I never hear the first second. If I pause it, then play it, one second of audio is cut out again and then comes in distorted for a split second before playing nicely.
 
I just upgraded my driver and still have this issue.

It appears many people have this issue since every post associated with it has earned a "HOT!" tag. Has this been escalated yet?

Supercherry

stalinx20
I'm not wanting to bring up an old thread, but I tried this, and the issue is real. For a few days, the HDMI will work, but after the PC comes out of sleep mode, HDMI is "no longer plugged in". Tried everything - everything. There is no fix. The only fix it to remove everything related to Nvidia (drivers, audio, PhysX, etc.), shut PC down, take the GPU out (Yes, you have to do this.), insert GPU back in, and then proceed to install the drivers normally.
 
Once the PC starts up, you should then see the HDMI audio "connected". Why is it like this? Probably because Nvidia doesn't do audio; I don't know. Honestly, discrete sound card is the way to go.

Wow that is crazy that you have to go that far. Are you sure it isn't creating another device that is hidden/disabled when your main HDMI device shows unplugged? Mine has never done what you describe, it always appears as a duplicate device with incremented IDs e.g. SAMSUNG-0, SAMSUNG-C, SAMSUNG-4 etc. I would try taking a peek in device manager under Audio Devices (may have to enable show hidden devices). 
 
Such a bummer that they likely won't ever fix this.

Supercherry

stalinx20

Supercherry

stalinx20
I'm not wanting to bring up an old thread, but I tried this, and the issue is real. For a few days, the HDMI will work, but after the PC comes out of sleep mode, HDMI is "no longer plugged in". Tried everything - everything. There is no fix. The only fix it to remove everything related to Nvidia (drivers, audio, PhysX, etc.), shut PC down, take the GPU out (Yes, you have to do this.), insert GPU back in, and then proceed to install the drivers normally.
 
Once the PC starts up, you should then see the HDMI audio "connected". Why is it like this? Probably because Nvidia doesn't do audio; I don't know. Honestly, discrete sound card is the way to go.

Wow that is crazy that you have to go that far. Are you sure it isn't creating another device that is hidden/disabled when your main HDMI device shows unplugged? Mine has never done what you describe, it always appears as a duplicate device with incremented IDs e.g. SAMSUNG-0, SAMSUNG-C, SAMSUNG-4 etc. I would try taking a peek in device manager under Audio Devices (may have to enable show hidden devices). 
 
Such a bummer that they likely won't ever fix this.

All other devices are disabled. Believe me, I was emailing EVGA techs about this and tried their approaches; nothing worked.
 
The greatest funny thing of all of it, is if I go to the monitor selection screen within Nvidia control panel (the are where you select for Nvidia surround), I can see and Nvidia control panel recognizes the model and make of my receiver. So what's up? So ironic.

You may have already tried this, but what happens when you enable all of the devices? Can you see the connected one then? Sometimes it happens to me like I described in the OP, where the device will unplug itself and 'become' the empty port that I had originally disabled. 
 
Sorry I never replied to your PM by the way. Stupid forum rules where you need >10 posts to even REPLY to someone who PM'd you, and I didn't want to spam (this is just now my 11th post).