On Tue, 25 May 2021 11:04:14 +0200, Ujfalusi, Peter wrote: > > > > On 5/25/2021 11:23 AM, Takashi Iwai wrote: > >>> Let's check other possibilities > >>> at first, e.g. setting auto_mute_via_amp flag. This can be achieved > >>> even via hints in an early patching specified via "patch" option of > >>> snd-hda-intel module (see Documentation/sound/hda/notes.rst for some > >>> information). > >> > >> Unfortunately the auto_mute_via_amp has no effect on the pop. > >> line_in_auto_switch and pin_amp_workaround have no effect either. > > > > How about applying alc_fixup_no_shutup() or alc_fixup_disable_aamix()? > > it looks like > > SND_PCI_QUIRK(0x17aa, 0x1048, "Lenovo ThinkStation P340", > ALC269_FIXUP_NO_SHUTUP), > > in alc269_fixup_tbl[] > > alone fixes the pop noise, I'll send a new patch to do this instead. Good to hear. But, there is already a quirk entry for this ID, so you'll need to put a chain there instead, I suppose. Takashi