[alsa-devel] [PATCH] ALSA: intel8x0: Mute External Amplifier by default for ThinkPad X31

[Takashi Iwai]

At Wed, 18 Aug 2010 19:39:17 -0400,
Daniel Chen wrote:
> 
> Hi,
> 
> Please apply the following patch (applicable to all stable linux
> releases, too) against current sound-2.6 to make audio audible by
> default for this model ThinkPad.

Applied now.  Thanks.


Takashi

> 
> Best,
> -Dan
> [2 0001-ALSA-intel8x0-Mute-External-Amplifier-by-default-for.patch <text/x-patch; US-ASCII (base64)>]
> From d3c51b1cfd6ffdf56a46f1081d20e0edd6d8891c Mon Sep 17 00:00:00 2001
> From: Daniel T Chen <crimsun at ubuntu.com>
> Date: Wed, 18 Aug 2010 19:33:43 -0400
> Subject: [PATCH] ALSA: intel8x0: Mute External Amplifier by default for ThinkPad X31
> 
> BugLink: https://bugs.launchpad.net/bugs/619439
> 
> This ThinkPad model needs External Amplifier muted for audible playback,
> so set the inv_eapd quirk for it.
> 
> Reported-and-tested-by: Dennis Bell <dennis.bell at parkerg.co.uk>
> Cc: <stable at kernel.org>
> Signed-off-by: Daniel T Chen <crimsun at ubuntu.com>
> ---
>  sound/pci/intel8x0.c |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
> index 6433e65..4677492 100644
> --- a/sound/pci/intel8x0.c
> +++ b/sound/pci/intel8x0.c
> @@ -1776,6 +1776,12 @@ static struct ac97_quirk ac97_quirks[] __devinitdata = {
>          },
>  	{
>  		.subvendor = 0x1014,
> +		.subdevice = 0x0534,
> +		.name = "ThinkPad X31",
> +		.type = AC97_TUNE_INV_EAPD
> +	},
> +	{
> +		.subvendor = 0x1014,
>  		.subdevice = 0x1f00,
>  		.name = "MS-9128",
>  		.type = AC97_TUNE_ALC_JACK
> -- 
> 1.7.0.4
>