I just installed Cosmic (Pop_OS! 22.04) into my second laptop, Thinkpad X270. Using it with bluetooth headphones is a bit annoying. It gives audio only on right side when using the high quality option. In hands-free mode audio comes out of both sides.
Is there a fix which I could apply by myself? Cosmic doesn’t offer (yet) a built-in balance adjustment so I don’t know if it’s just the balance.
Still it’s the best desktop and especially cosmic app store is best I’ve ever tried, including mobile.
Try installing blueman or another bluetooth utility
Run blueman and select a different, high quality codec after you connect (you’ll probably have to do this every time you connect)