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Low-volume static, potentially related to on-screen content?

post #1 of 3
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Hi all,

As I was writing this post, I realized I did not plug in my case's front audio jack to the motherboard, because I had no intention of using it. So I never tried it to see if there was static. I went ahead and gave that a shot, and lo and behold there is no static when plugging my headphones into the front audio port. So, I guess that suggests it is most likely a hardware/shielding issue with the circuitry for the rear audio port, right? Does anyone have any suggestions for resolving that? Any particular type of cable sleeving or something I should try? I'll leave the rest of the text I wrote up for this post here just to be fully informative, and because it seems like a waste to delete it all after I wrote it all up tongue.gif

[EDIT] I guess the easiest thing to do would be to just buy an external DAC. I was hoping to not spend more money though, but that's probably the best option. If a mod wants to delete this thread, go ahead!

I'm not certain that this is the correct forum category to post this, but I'll post it here since I don't know what component or piece of software might be causing the problem. I just built this PC about 2 weeks ago (my sig rig). The monitors, mouse, keyboard, mechanical HDDs, and the GPU (280x) were all taken from my previous PC, which did not have this issue. I am running Windows 10 64-bit.

This PC appears to have a *very* low-volume static that appears to be related to the on-screen content, especially objects in motion, as best as I can tell. I first noticed it when playing CS:GO, after I turned off the main-menu music so that there was no audio at all (other than the static, and occasional "clicks" as the cursor hovers over menu buttons). It was only when it was completely silent that I really began to take notice. If there are any other sounds in a game - wind, ambient music, footsteps, enemies growling, anything -- they drown out the static completely. It is very faint, but once I took notice then it is difficult to ignore.

Then, I opened up the Steam overlay and noticed that the static volume increased ever so slightly, and changed pitch. I opened up the web browser in the Steam overlay, and the static pitch changes again. I open up my Steam friends list in the overlay, and the pitch slightly changes once again.

Later, while playing Overwatch, I find myself far from the action and it is quite quiet. I notice the static in this game as well.

Eventually, I notice that even on my desktop, the static is present. However, here it is incredibly faint, to the point that I might have never noticed it if I wasn't aware of the issue in-game. Also, the static is not present constantly on my desktop, like it is in video games. When just on my desktop, the static only shows up when I move my mouse (that I have noticed so far). So, I am guessing that it has something to do with what is being output to the screen in some way? Since the non-moving Steam overlay has a strong effect, I'm not sure that it's related to motion on the screen. Although when on my desktop, I hear no static until I move the mouse (and even then, it is barely audible when I am actively trying to hear it).

I do not have speakers with this PC, and I have been primarily using my ATH-M50 headphones plugged directly into the motherboard port (not audio jack on the front of my case). Power cables from my PSU to not seem to be near the audio port where I would think they could be causing any interference.

**List anything you've done in attempt to diagnose or fix the problem.**

I have re-installed my video drivers. I uninstalled the "old" drivers, and used DDU in safe mode before re-installing. I also confirmed that my Realtek audio drivers are up to date.

I checked this Reddit thread, this post in particular, for some analysis that some people found related to some static. It appears that the Windows 10 release of the Windows Performance Analyzer is a bit different and has some different wording, so I'm not certain that I troubleshooted in the correct way as I am unfamiliar with some of this. I didn't really come to any conclusions, and my "DPC Latency Checker" graph never reached the red anyway, as that post suggested was when you would begin to see issues. Although my graph shows results just above 1000 μs, but very consistently at the same level, no spikes. Pretty consistently around 1180-1185 μs, maximum I've seen is 1215 μs. I don't even know if this is relevant to my issue, though.

I originally did not have "Intel INF" installed, despite it being listed as one of the drivers for my motherboard on Gigabyte's website. I have since installed it, as I saw someone somewhere in my Google searching mention that it affected their DPC latency after they installed it. I didn't notice anything, not that I expected anything.
Edited by TriplePlay - 7/2/16 at 10:24pm
Pumpmaster Flex
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Pumpmaster Flex
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7-6700k Gigabyte GA-Z170X-UD5 ASUS ROG STRIX GTX 1080 TI 11GB G.SKILL Ripjaws V Series 16GB DDR4 3200 
Hard DriveCoolingOSKeyboard
Samsung 850 EVO 500 GB Cryorig H7 Windows 10 Pro Ducky One TKL Side Print PBT 
PowerCaseMouseMouse Pad
EVGA SuperNOVA 850w Fractal Design Define R5 Black Silent Logitech G502 Proteus Core SteelSeries QcK Heavy 
AudioOtherOtherOther
Schiit Magni 2 + Modi 2 Sennheiser HD 598 Special Edition Over-Ear Head... Audio-Technica ATH-M50 Headphones AntLion ModMic 
Other
Sennheiser HD 650 
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post #2 of 3
Yea its just electrical static and such the wire is picking up, not much you can do for the front panel. a external dac or like a usb to 3.5mm jack would work. its hard to combat or find the source of though, could just be normal running of your system, happens quite often.
Koji
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Koji
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Vizio 24" 1080p 5ms Thermaltake Challenger Ultimate RBG EVGA SuperNOVA 1000 G1 NZXT H630-W 
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post #3 of 3

Elder Scrolls online did this as well on the initial menu. Drove me crazy trying to figure out what was causing it. It started after a DLC patch and stopped o the next DLC patch.

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