At Wed, 10 Jun 2015 13:17:55 +0300, Mihai Donțu wrote: > > On Wed, 20 May 2015 07:01:12 +0200 Takashi Iwai wrote: > > From: Takashi Iwai <ti...@suse.de> > > Subject: [PATCH] ALSA: hda - Disable widget power-saving for ALC292 & co > > > > We've got reports that ALC3226 (a Dell variant of ALC292) gives click > > noises at transition from D3 to D0 when the widget power-saving is > > enabled. Further debugging session showed that avoiding it isn't > > trivial, unfortunately, since paths are basically activated > > dynamically while the pins have been already enabled. > > > > This patch disables the widget power-saving for such codecs. > > > > Reported-by: Jonathan McDowell <nood...@earth.li> > > Signed-off-by: Takashi Iwai <ti...@suse.de> > > --- > > sound/pci/hda/patch_realtek.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c > > index 2e246fe495f6..31f8f13be907 100644 > > --- a/sound/pci/hda/patch_realtek.c > > +++ b/sound/pci/hda/patch_realtek.c > > @@ -5623,7 +5623,8 @@ static int patch_alc269(struct hda_codec *codec) > > > > spec = codec->spec; > > spec->gen.shared_mic_vref_pin = 0x18; > > - codec->power_save_node = 1; > > + if (codec->core.vendor_id != 0x10ec0292) > > + codec->power_save_node = 1; > > > > snd_hda_pick_fixup(codec, alc269_fixup_models, > > alc269_fixup_tbl, alc269_fixups); > > I'm on 4.1-rc7 which appears to contain this patch, however, I still > get the audio artifacts (crackles) when I boot my laptop (Latitude > E7440): > > [ 1.058839] snd_hda_codec_realtek hdaudioC1D0: autoconfig for ALC3226: > line_outs=1 (0x16/0x0/0x0/0x0/0x0) type:line > [ 1.058843] snd_hda_codec_realtek hdaudioC1D0: speaker_outs=1 > (0x14/0x0/0x0/0x0/0x0) > [ 1.058846] snd_hda_codec_realtek hdaudioC1D0: hp_outs=1 > (0x15/0x0/0x0/0x0/0x0) > [ 1.058849] snd_hda_codec_realtek hdaudioC1D0: mono: mono_out=0x0 > [ 1.058851] snd_hda_codec_realtek hdaudioC1D0: inputs: > [ 1.058855] snd_hda_codec_realtek hdaudioC1D0: Dock Mic=0x19 > [ 1.058859] snd_hda_codec_realtek hdaudioC1D0: Headset Mic=0x1a > [ 1.058862] snd_hda_codec_realtek hdaudioC1D0: Internal Mic=0x12 > > 4.0.4 was fine.
Does it happen only once at boot (i.e. at power up), or happens always at runtime PM? If it's a once-off boot thing, the patch shouldn't have much effect. Something else, very subtle thing, e.g. the order of verb execution, might cause this kind of problem. Takashi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
