kernel-packages team mailing list archive

[Takashi Iwai <tiwai@xxxxxxx>]

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
>

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

Title:
  "num_steps = 0" error on ALC256

Status in linux package in Ubuntu:
  In Progress

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

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