From: Jonathan McDowell <noodles@earth.li>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: Re: Audio crackles with 4.1-rc1
Date: Wed, 20 May 2015 21:02:35 +0100 [thread overview]
Message-ID: <20150520200235.GN28070@earth.li> (raw)
In-Reply-To: <s5hd21vu9k7.wl-tiwai@suse.de>
On Wed, May 20, 2015 at 07:01:12AM +0200, Takashi Iwai wrote:
> At Tue, 19 May 2015 22:53:10 +0100,
> Jonathan McDowell wrote:
> >
> > On Tue, May 19, 2015 at 07:09:12PM +0200, Takashi Iwai wrote:
> > > At Tue, 19 May 2015 17:19:11 +0100,
> > > Jonathan McDowell wrote:
> > > >
> > > > On Tue, May 19, 2015 at 08:15:32AM +0200, Takashi Iwai wrote:
> > > > > Does the patch below have any improvement?
> > > >
> > > > I still get a clicking on the standby -> active transition with the
> > > > patch provided on top of 4.1-rc4.
> > >
> > > OK, just to be sure, could you check whether changing msleep(10) to
> > > msleep(100) makes no difference? Also put a line like
> > > pr_info("XXX power up %x\n", nid);
> > > after msleep() call to see which nodes are powered up dynamically.
> >
> > Increasing the delay, if anything, makes the crackle when powering up
> > seem a little longer. dmesg log looks like:
> >
> > [ 4206.075557] XXX power up 2
> > [ 4206.179671] XXX power up 14
> > [ 4206.291758] XXX power up 3
>
> OK, so everything looks correct, but the codec (or the machine) seems
> leading to the noise when a branched path is activated while the pin
> was already powered up. Then let's disable the widget power-saving
> for these codecs.
>
> Could you confirm that the patch below works?
4.1-rc4 + patch below running all day without hearing any crackles.
Sounds good to me.
> -- 8< --
> From: Takashi Iwai <tiwai@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 <noodles@earth.li>
> Signed-off-by: Takashi Iwai <tiwai@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);
> --
J.
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next prev parent reply other threads:[~2015-05-20 20:02 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-28 11:21 Audio crackles with 4.1-rc1 Jonathan McDowell
2015-04-28 12:00 ` Takashi Iwai
2015-04-28 12:35 ` Jonathan McDowell
2015-04-28 13:05 ` Takashi Iwai
2015-04-28 14:43 ` Takashi Iwai
2015-04-29 11:28 ` Jonathan McDowell
2015-04-29 11:54 ` Takashi Iwai
2015-04-30 15:01 ` Jonathan McDowell
2015-04-30 17:06 ` Takashi Iwai
2015-05-02 15:05 ` Jonathan McDowell
2015-05-19 6:15 ` Takashi Iwai
2015-05-19 16:19 ` Jonathan McDowell
2015-05-19 17:09 ` Takashi Iwai
2015-05-19 21:53 ` Jonathan McDowell
2015-05-20 5:01 ` Takashi Iwai
2015-05-20 20:02 ` Jonathan McDowell [this message]
2015-06-10 10:17 ` Mihai Donțu
2015-06-10 10:22 ` Takashi Iwai
2015-06-10 10:41 ` Mihai Donțu
2015-06-10 10:50 ` Takashi Iwai
2015-06-10 11:45 ` Mihai Donțu
2015-06-10 12:33 ` Takashi Iwai
2015-06-10 12:50 ` Takashi Iwai
2015-06-10 16:22 ` Mihai Donțu
2015-06-10 16:27 ` Takashi Iwai
2015-06-10 16:43 ` Mihai Donțu
2015-06-10 18:23 ` Takashi Iwai
2015-06-10 22:12 ` Mihai Donțu
2015-06-11 5:01 ` Takashi Iwai
2015-06-11 22:23 ` Mihai Donțu
2015-06-12 7:00 ` Takashi Iwai
2015-06-12 9:45 ` Mihai Donțu
2015-06-12 10:09 ` Takashi Iwai
2015-06-12 14:13 ` Takashi Iwai
2015-06-12 17:28 ` Mihai Donțu
2015-06-14 12:24 ` Jonathan McDowell
2015-06-15 12:04 ` Takashi Iwai
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