Comment 32 for bug 1654448

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Daniel van Vugt (vanvugt) wrote : Re: XPS 13 9360 and 9350, Realtek ALC3246, Headphone audio hiss

^^^
Confirmed on an XPS 13 9350 too. And the 'Headphone Mic Boost' workaround works. Although like others, I find that concerning since it should in theory make the problem worse or make no difference.

Also confirmed the problem persists with:
 * 3-contact earphones (Sony)
 * 4-contact Apple Earpods
 * 4-contact Bose AE2 headphones (Apple-compatible cable)

All of these experience the hiss, but the Bose almost none (much harder to notice). I think the most interesting test should be to try some proper Android/Samsung/Nokia wired headphones/earphones in future.

If it turns out there's nothing wrong with the physical connection then this sounds like a kernel problem still.

kaihengfeng: I have just tested your kernel on zesty and it made no difference. The problem remains and the same old amixer workaround is required.