Question / Help USB Going haywire as soon as I hit record.

NolanSyKinsley

New Member
First: logs https://obsproject.com/logs/ICRcreCH__QfxzEz just from a quick startup and attempt at recording. My speakers start crackling as soon as I hit record, but the crackling does not show up in the recorded game audio. If I try to play through it, my USB PowerA Xbox controller goes haywire and starts hanging, my controls will be stuck after a few second/minutes of playing and I will just veer off.

This is a really strange issue that has persisted across multiple distros, motherboards, and processors. The only thing that has stayed the same has been my two audio devices, an M-Audio Digital Transit USB sound card, and a HyperX Cloud 2 USB headset. No matter what happens when I hit record in OBS, the sound through my devices starts crackling, or if I have anything plugged into my USB 3.1 port it just cuts out the sound completely (when anything is in the 3.1 port, no audio is even recorded in the video, but if nothing is plugged into the 3.1 port, I have audio recorded in the game, but my system speakers are freaking out buzzing crackling and popping while recording), but my system shows no dmesg errors or anything in journalctl. Even when I have no audio capture or video capture set up and it says that I will be producing a black screen, it still messes up my system sound once I hit record. Even if I only have one of the USB sound cards plugged in the issue persists. I have tried every encoding process as well, no change in symptoms.

I am running manjaro, and have followed all the steps on the arch wiki for troubleshooting pulseaudio latency. I have even used the tool at https://github.com/raboof/realtimeconfigquickscan to ensure my system is as up to snuff for professional level audio as well, it passes all checks. I am running a real time kernel, with real time enabled in Pulse, it persists on normal kernels as well.

I am at my wits end, I was hoping my system upgrade would resolve this issue and it was just my old motherboard, but it appears it is not. My old mobo didn't have USB 3.0 so I cannot test if it causing all audio to cut out persists across motherboards, but the crackling and distortion of system audio does.

**edit**

Tested disabling USB 3.1 as a whole to see if that would help, but it does not. Another test was starting recording and literally removing every single other USB device but the sound card and the crackling and popping greatly diminished, but were still present and my lack of peripherals made interacting with my computer difficult.
 
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NolanSyKinsley

New Member
I have officially removed the USB system as a source of the problem. I enabled msi for my sound card, switched to an internal sound card and unbound the USB ports that were left on the sound card's IRQ so it had the IRQ all to itself and the issue still persists. It doesn't start crackling as soon as I hit record any more, most sounds are fine, only when there is a loud sound or a lot of sounds do I get crackling now, but still none in the recorded audio.
 
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