Re: snd-hda-intel: Fix volume-wheel and microphone on Fujitsu-Siemens Amilo M3438G

[Takashi Iwai <tiwai@suse.de>]

At Wed, 6 Feb 2008 17:14:37 +0100,
M G wrote:
> 
> Currently the default model that gets selected on this hardware is "F1734".
> Using this model neither the volume-wheel nor microphone (internal or
> external) work.

Thanks for your patch.

> The first part of my patch changes the default model to "fujitsu", this
> enables the volume wheel on the left side of the laptop.

The concern is whether you lose any functionality by this rename.
The support of the volume knob control with the existing F1734 model
would be easy.  You'd need to add a proper verb to enable the
unsolicited event and register the handler, such as, uniwill_p53 one.

> The second part changes the capture settings and thus makes it possible to
> record from microphones. Now when capturing from the external microphone I
> can hear myself talking but its quite quiet. I can improve this a little by
> raising the capture volume, but if I raise it above 40 I can no longer
> record anything.

Using 6stack_capture_source looks wrong to me.  It is actually for
desktops.  But yours isn't, I guess.

The recording quality might be improved by setting the proper pin VREF
level.

Anyway, it'd be more helpful if you can show the detailed information,
e.g. the output of alsa-info.sh script.


Takashi

> Questions:
> Is this patch any good or is there a better way to fix my problems?
> Why is the recording so quiet and why can't I record with capture value
> above 40?
> 
> 
> 
> Patch:
> diff -r c4c5e6ced12f pci/hda/patch_realtek.c
> --- a/pci/hda/patch_realtek.c    Wed Feb 06 15:48:06 2008 +0100
> +++ b/pci/hda/patch_realtek.c    Wed Feb 06 15:59:28 2008 +0100
> @@ -2917,7 +2917,7 @@ static struct snd_pci_quirk alc880_cfg_t
>      SND_PCI_QUIRK(0x161f, 0x203d, "W810", ALC880_W810),
>      SND_PCI_QUIRK(0x1695, 0x400d, "EPoX", ALC880_5ST_DIG),
>      SND_PCI_QUIRK(0x1695, 0x4012, "EPox EP-5LDA", ALC880_5ST_DIG),
> -    SND_PCI_QUIRK(0x1734, 0x107c, "FSC F1734", ALC880_F1734),
> +    SND_PCI_QUIRK(0x1734, 0x107c, "FSC F1734", ALC880_FUJITSU),
>      SND_PCI_QUIRK(0x1734, 0x10ac, "FSC", ALC880_UNIWILL),
>      SND_PCI_QUIRK(0x1734, 0x10b0, "Fujitsu", ALC880_FUJITSU),
>      SND_PCI_QUIRK(0x1854, 0x0018, "LG LW20", ALC880_LG_LW),
> @@ -3161,7 +3161,7 @@ static struct alc_config_preset alc880_p
>          .dig_out_nid = ALC880_DIGOUT_NID,
>          .num_channel_mode = ARRAY_SIZE(alc880_2_jack_modes),
>          .channel_mode = alc880_2_jack_modes,
> -        .input_mux = &alc880_capture_source,
> +        .input_mux = &alc880_6stack_capture_source,
>          .unsol_event = alc880_uniwill_p53_unsol_event,
>          .init_hook = alc880_uniwill_p53_hp_automute,
>      },
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