Only one side of my headphones works

The distro I'm using is Arch, and my headphones are Sony's WH-H910N model. These headphones are connected by a jack rather than using bluetooth, and they work properly with or without this jack on multiple other machines, so that rules out both a hardware issue, and an issue with the jack. I checked the settings in PulseAudio, and saw the following: https://i.sstatic.net/KsxEm.jpg Also, more settings here: https://i.sstatic.net/cFBUy.jpg I also checked alsamixer, and found something peculiar. There is only one output, seemingly, for my headphones. https://i.sstatic.net/yVLfv.jpg So how could I

Question by metty on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.