On 5/25/2021 10:19 AM, Takashi Iwai wrote: > On Mon, 24 May 2021 17:25:33 +0200, > Peter Ujfalusi wrote: >> >> On playback start there is a huge plock/pop noise via the green jack used >> in Line out mode. >> >> The only way I was able to fix it to set the power_save to 0 for the >> snd_hda_intel. >> >> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx> >> --- >> Hi Takashi, >> >> Changes since RFC: >> - Fixed up the PCI ID >> >> ever since I have this workstation (three weeks) the plock/pop noise on playback >> start bugged me. So far the only solution I have found is to disable the >> power_save which I find acceptable on a desktop compared to the pops. >> >> The alsa-info.sh output is can be found here: >> http://alsa-project.org/db/?f=414b1b236fc73db386ad4f938bc3b304f6b30b05 >> >> Missing details from alsa-info output: >> # lspci -nnk | grep -A2 Audio >> 00:1f.3 Audio device [0403]: Intel Corporation Comet Lake PCH cAVS [8086:06c8] >> DeviceName: Onboard - Sound >> Subsystem: Lenovo Device [17aa:1048] >> >> CPU: i9-10900k >> >> The machine have ALC623 codec and the jacks are correctly discovered and they >> do what they supposed to be. >> When I have the headset connected to the front and audio is routed there the >> line out (green jack) from the back still prodices the plock/pop. >> >> Is there a known quirk for similar issue or a better way to handle it? > > In general, this deny list is the last resort when we couldn't find > any other way to fix the click noise. Sure, I'm not that familiar yet with the HDA code base. > 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. fwiw, a simple cat /proc/asound/card0/codec#0 generates plock/pop. -- Péter
