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Message-ID: <s5hlhfrn2w9.wl-tiwai@suse.de> Date: Wed, 10 Jun 2015 14:50:30 +0200 From: Takashi Iwai <tiwai@...e.de> To: Mihai Donțu <mihai.dontu@...il.com> Cc: Jonathan McDowell <noodles@...th.li>, alsa-devel@...a-project.org, linux-kernel@...r.kernel.org Subject: Re: Audio crackles with 4.1-rc1 At Wed, 10 Jun 2015 14:33:42 +0200, Takashi Iwai wrote: > > At Wed, 10 Jun 2015 14:45:51 +0300, > Mihai Donțu wrote: > > > > On Wed, 10 Jun 2015 12:50:22 +0200 Takashi Iwai wrote: > > > At Wed, 10 Jun 2015 13:41:35 +0300, Mihai Donțu wrote: > > > > On Wed, 10 Jun 2015 12:22:53 +0200 Takashi Iwai wrote: > > > > > 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 <tiwai@...e.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 <noodles@...th.li> > > > > > > > Signed-off-by: Takashi Iwai <tiwai@...e.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. > > > > > > > > Only at power up. I've also suspend-resumed twice and can confirm it's > > > > OK. > > > > > > > > There's a _very_ brief click at suspend (when the power is cut), but it > > > > looks like a plain circuitry thing. I probably didn't notice it before > > > > because I wasn't looking for it. > > > > > > Thanks. Do you get the same click noise when reloading snd-hda-intel > > > driver? Also, does it happen when booting in runlevel 3? > > > > > > Last but not least, a patch like below has any effect? > > > > > > > > > Takashi > > > > > > --- > > > diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c > > > --- a/sound/pci/hda/hda_codec.c > > > +++ b/sound/pci/hda/hda_codec.c > > > @@ -3077,6 +3077,8 @@ static unsigned int hda_set_power_state(struct hda_codec *codec, > > > break; > > > } > > > > > > + if (power_state == AC_PWRST_D0) > > > + msleep(100); > > > return state; > > > } > > > > > > > Reloading snd-hda-intel does not trigger the noise, but it helps. I've > > noticed that the clicks appear when loading/reloading pulseaudio. > > > > $ pulseaudio -k > > > > will spawn a new child in background (probably asked by kmix) and > > immediately I hear the noise. Reloading the driver makes the problem go > > away. > > Hm. It's a bit inconsistent, but still this can be only at the full > power up sequence. > > > telinit 3 does nothing for me (Gentoo seems to have things wired > > differently). Manually reloading alsasound (/etc/init.d/alsasound) did > > not trigger the problem either. > > > > However! Your patch seems to work. Cold boot, pulseaudio restart and > > nothing. Not a peep. :-) > > OK, could you try to reduce the sleep value from 100 to 10? > Does it still work? ... and check whether the patch below works instead. This is a better place if it really fixes. The former patch is in the common path every driver uses while this is codec-specific. thanks, Takashi --- diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 0320cb523d9e..957412548ba1 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5637,7 +5637,9 @@ static int patch_alc269(struct hda_codec *codec) spec = codec->spec; spec->gen.shared_mic_vref_pin = 0x18; - if (codec->core.vendor_id != 0x10ec0292) + if (codec->core.vendor_id == 0x10ec0292) + msleep(100); /* for avoiding click noise at power up */ + else codec->power_save_node = 1; snd_hda_pick_fixup(codec, alc269_fixup_models, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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