audio clicking in left ear, no matter if sound is playing or not (linux)

[Glitch31415]

if volume is non-zero, there is an intermittent clicking sound in the left ear, about once every 3/4 of a second
separately, when the volume is set to a very high number (noticeable at >10) there's some static droning and tones, even when no sound is playing

[Glitch31415]

this is what it sounds like in-game, turn your volume up to hear it better
https://youtu.be/MABiZWTzK7w
turn your volume down for this, the example of the droning (but it also has the clicking) in the main menu
https://youtu.be/AaRqGRuABaA