Cracking audio via video card's HDMI port.

Hey guys, just wanted to check if anyone has experienced this issue. Specs are below:

ASUS z97-A motherboard
EVGA GeForce GTX 970 SC ACX 2.0 (running on stock)
Corsair Vengeance 2x4GB 1866
i5 4690k (running on stock)

There is very alarming crackling audio when I use my PC via my video card's HDMI slot. On some bootups it's non existent and on some, it is terrible (I'd say it happens 50% of the time I start my computer). Motherboard sound is fine. I tried hooking my monitor to vga and using on board sound and I have not noticed the cracking happen when I go that route. But I really wanna game in HDMI because I find the quality a lot better.

I have tried flashing my BIOS, uninstalling nvidia audio drivers, install latest motherboard chipset and network drivers, using different HDMI cables, disabling on board sound via BIOS but have had no luck. Any help would be appreciated. Thanks!


UPDATE:On one of my bad boot ups, I ran the latency checker and I am seeing it spike through the roof. Below is a screenshot:
imgur: the simple image sharer

When you use the HDMI audio, the audio is generated by the on-board audio chip in the Video card. The regular PC audio is not used. Thus the problem mostly points to the video card and/or the drivers.

The DPC latency is terrible and shows a major problem.

Run the Resplendence Latency Mon program and maybe it will pin point the problem.

I would also reseat the video card, install or reinstall the latest video drivers and look for any other running programs that could be causing the spikes.

Resplendence Software - Advanced System Tools and Developer Components

BTW, here is how to post screenshots on this forum, from the forum tutorials.

Screenshots and Files - Upload and Post in Seven Forums

One additional item to check is the actual HDMI Cable, Here in the UK I have found a lot of variation in quality of cables, the obvious one of a cheap verses a premium cable, but also two cables from the same range. There is also the old issue of Shielding, with desktop computers especially there is often a lot of power cabling at the rear of the install, Shielded AV cables are less prone to interference than unshielded.

I would suggest you look at borrowing, (Friends & Family, Other devices) a cable or two from other makes than your own just to eliminate this possible cause :)

Based on the extremely high spikes in the DPC Latency Checker, I wouldn't suspect the HDMI cable. The high spikes in the DPC Latency Checker point back to a system/hardware problem.

Hey guys! I am so glad you found my post.

@Barman58, I picked up a couple HDMI cables this weekend but that didn't fix it. Now I have extra HDMI cables, who needs one? lol

@Fireberd Yeah, I have a screenshot below. Running Latency Mon, I have noticed the 2 most consistent I see are dx graphics kernel, dxgkrnl.sys and nvidia nvlddmkm.sys. This is the first time of around 30 times that I see iusb3xhc.sys show up on Latency Mon.

The link you posted is invalid, on the forum. Post as the instructions I linked.

The two are video card related. For testing, I see yhou have an i5 that should have built in Intel Video and HDMI (video and audio). Temporarily remove the NVIDIA video card and use the Intel Video. Run the DPC latency and see what happens.

As I previously noted, when you use HDMI audio, the audio is generated from the sound chip ("sound card") on the video card. The HDMI Audio is set as the "default playback device" and the PC sound is not used. The regular PC sound apparently is not affected so there are no pops, clicks, etc. It points back to the video card and/or drivers. There could be an issue with the PCIe bus, the Intel video/audio conflicting, etc. Disable the Intel HD Audio in the Device Manger and see if that makes any difference. Actually all you should have in the Device Manager, Audio section is the HDMI Audio from the Video Card and the PC Audio (e.g. RealTek or whatever you have).

Another option is to use the HDMI for Video only, (you should be able to switch off the HDMI sound option in the Video or audio control panel, depending on which one you have installed), and simply use the Realtek for sound via the speakers.