@lain @sun What kernel, what distro, what hardware?

It works in all my computers just fine, I run mostly on AMD hardware though.

I can tell you that of all my friends I'm the one with no audio issues ever and I'm the only one running Linux.

My mic always work, my headset always work, resetting the sound mixer always works, I can record anything, I can connect any input to any output, bluetooth works always, etc.

What I do though is get rid of things not supported or problematic ASAP, buying a bluetooth dongle for $7 that has a broken crashy driver and keeping it is stupid, get one that's supported. Same for wifi dongles that do not have mainlined kernel support, to the bin it goes. Same for audio stuff. Linux is no different than Windows or MacOS, trying to use a piece of equipment not supported is asking for unnecessary problems.