There appears to be a driver or configuration glitch with input on my main audio card. The problem only affects the integrated motherboard audio (Starship/Matisse HD Audio Controller Analog Stereo) with my headphone microphone plugged into the front panel: When using my USB webcam as the capture device I experience no issue.
Essentially sound does come through the microphone, however the recorder begins to lag when using it. This is even visible on the capture waveform or volume bar which are only updated in slow increments with huge delays. The audio captured is a garbled mess: It does correspond to noises received by the microphone at various points in time, but it’s as if the whole thing is fast-forwarded and you only hear a bunch of absurd noises.
This doesn’t happen quite all the time: On rare occasions capturing through this microphone works just fine, but after the first attempt this lag is introduced and it becomes unusable. At first I only experienced the issue when recording sound in Audacity, now I’m also having it occur in Discord and other voice chat applications.
Anyone know what can cause an input device to do this? I played with the settings in Pavucontrol but nothing seems to make it go away. Intuition tells me it might be related to buffer overflow and the device being overwhelmed by something, in which case I may need to hack some latency setting.