On Thu, 10 Mar 2022 14:58:36 +0100, 黄文辉 wrote: > > Hi Takashi, > > Thank you for your reply. > > When booting with plugged headset, the headphone will be muted. The muted state is the default behavior. Wouldn't it be unmuted if you adjust the corresponding mixer element? Takashi > > Thanks. > > ------------------ Original ------------------ > From: "Takashi Iwai"<tiwai@xxxxxxx>; > Date: Thu, Mar 10, 2022 09:29 PM > To: "huangwenhui"<huangwenhuia@xxxxxxxxxxxxx>; > Cc: "perex"<perex@xxxxxxxx>; "tiwai"<tiwai@xxxxxxxx>; "jeremy.szu" > <jeremy.szu@xxxxxxxxxxxxx>; "hui.wang"<hui.wang@xxxxxxxxxxxxx>; "wse" > <wse@xxxxxxxxxxxxxxxxxxx>; "cam"<cam@xxxxxxxxxxx>; "kailang" > <kailang@xxxxxxxxxxx>; "tanureal"<tanureal@xxxxxxxxxxxxxxxxxxxxx>; "sami" > <sami@xxxxxxxx>; "alsa-devel"<alsa-devel@xxxxxxxxxxxxxxxx>; "linux-kernel" > <linux-kernel@xxxxxxxxxxxxxxx>; > Subject: Re: [PATCH] ALSA: hda/realtek - Fix headset mic problem for a HP > machine with alc671 > > On Thu, 10 Mar 2022 14:03:01 +0100, > huangwenhui wrote: > > > > On a HP 288 Pro G8, the front Mic could not be detected. > > > > Signed-off-by: huangwenhui <huangwenhuia@xxxxxxxxxxxxx> > > Thanks for the patch. Most of the changes look OK, but one thing I > still don't get: > > > + case HDA_FIXUP_ACT_INIT: > > + alc_write_coef_idx(codec, 0x19, 0xa054); > > + msleep(80); > > + snd_hda_codec_write(codec, hp_pin, 0, > > + AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE); > > Why this unconditional unmute is required for fixing the mic problem? > > Takashi > >
