kernel-packages team mailing list archive

[Kailiang Yang <kailang@xxxxxxxxxxx>]

Fix Dell ALC256 headphone Mic recording issue.
Default is pcbeep path for 0x1a input. 

> -----Original Message-----
> From: Takashi Iwai [mailto:tiwai@xxxxxxx] 
> Sent: Tuesday, April 21, 2015 6:03 PM
> To: David Henningsson
> Cc: tiwai@xxxxxxx; Kailang; hui.wang@xxxxxxxxxxxxx; 
> 1446517@xxxxxxxxxxxxxxxxxx; stable@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH] ALSA: hda - fix "num_steps = 0" error on ALC256
> 
> At Tue, 21 Apr 2015 10:48:46 +0200,
> David Henningsson wrote:
> > 
> > The ALC256 does not have a mixer nid at 0x0b, and there's 
> no loopback 
> > path (the output pins are directly connected to the DACs).
> > 
> > This commit fixes an "num_steps = 0 for NID=0xb (ctl = Beep 
> Playback Volume)"
> > error (and as a result, problems with amixer/alsamixer).
> > 
> > If there's pcbeep functionality, it certainly isn't controlled by 
> > setting an amp on 0x0b, so disable beep functionality (at 
> least for now).
> > 
> > Cc: stable@xxxxxxxxxxxxxxx
> > BugLink: 
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1446517
> > Signed-off-by: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
> 
> Applied, thanks.
> 
> 
> Takashi
> 
> > ---
> >  sound/pci/hda/patch_realtek.c | 5 +++--
> >  1 file changed, 3 insertions(+), 2 deletions(-)
> > 
> > diff --git a/sound/pci/hda/patch_realtek.c 
> > b/sound/pci/hda/patch_realtek.c index 231d0e4..03975d03 100644
> > --- a/sound/pci/hda/patch_realtek.c
> > +++ b/sound/pci/hda/patch_realtek.c
> > @@ -5664,6 +5664,7 @@ static int patch_alc269(struct 
> hda_codec *codec)
> >  		break;
> >  	case 0x10ec0256:
> >  		spec->codec_variant = ALC269_TYPE_ALC256;
> > +		spec->gen.mixer_nid = 0; /* ALC256 does not 
> have any loopback mixer 
> > +path */
> >  		break;
> >  	}
> >  
> > @@ -5677,8 +5678,8 @@ static int patch_alc269(struct 
> hda_codec *codec)
> >  	if (err < 0)
> >  		goto error;
> >  
> > -	if (!spec->gen.no_analog && spec->gen.beep_nid)
> > -		set_beep_amp(spec, 0x0b, 0x04, HDA_INPUT);
> > +	if (!spec->gen.no_analog && spec->gen.beep_nid && 
> spec->gen.mixer_nid)
> > +		set_beep_amp(spec, spec->gen.mixer_nid, 0x04, 
> HDA_INPUT);
> >  
> >  	codec->patch_ops = alc_patch_ops;
> >  	codec->patch_ops.stream_pm = snd_hda_gen_stream_pm;
> > --
> > 1.9.1
> > 
> 
> ------Please consider the environment before printing this e-mail.
> 

** Attachment added: "0000-alc256-fix-uaj-mic.patch"
   https://bugs.launchpad.net/bugs/1446517/+attachment/4381929/+files/0000-alc256-fix-uaj-mic.patch

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https://bugs.launchpad.net/bugs/1446517

Title:
  "num_steps = 0" error on ALC256

Status in linux package in Ubuntu:
  Fix Committed

Bug description:
  This bug is used for tracking, please do not triage.

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