[alsa-devel] Patches for alsactl init db

[Takashi Iwai]

At Thu, 1 Oct 2009 00:32:31 -0400,
Daniel Chen wrote:
> 
> On Wed, Sep 30, 2009 at 2:06 AM, Takashi Iwai <tiwai at suse.de> wrote:
> > Thanks.  But, basically it means that a quirk in the driver is
> > needed to revert the EAPD switch.
> > Could you check whether ac97_quirk=inv_eapd module option for
> > snd-intel8x0 works?
> 
> I've received confirmation from the bug reporter that using the quirk
> makes analog sound audible by default. Attached is a patch against
> current sound-2.6 HEAD making this change.

Thanks, applied now.


Takashi

> 
> -Dan
> [2 0001-Mute-External-Amplifier-by-default-for-Sony-VAIO-VGN.patch <text/x-patch; US-ASCII (base64)>]
> From 9c64d1c19954f1ed91cb170855829903fcf3b7e3 Mon Sep 17 00:00:00 2001
> From: Daniel T Chen <crimsun at ubuntu.com>
> Date: Thu, 1 Oct 2009 00:28:16 -0400
> Subject: [PATCH] Mute External Amplifier by default for Sony VAIO VGN-T350P
> 
> BugLink: https://bugs.launchpad.net/bugs/410933
> 
> This Sony VAIO model needs External Amplifier unmuted for audible
> playback, so make sure we set the inv_eapd quirk.
> 
> 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 171ada5..86e9a2d 100644
> --- a/sound/pci/intel8x0.c
> +++ b/sound/pci/intel8x0.c
> @@ -1954,6 +1954,12 @@ static struct ac97_quirk ac97_quirks[] __devinitdata = {
>  		.name = "Sony S1XP",
>  		.type = AC97_TUNE_INV_EAPD
>  	},
> +	{
> +		.subvendor = 0x104d,
> +		.subdevice = 0x81c0,
> +		.name = "Sony VAIO VGN-T350P", /*AD1981B*/
> +		.type = AC97_TUNE_INV_EAPD
> +	},
>   	{
>  		.subvendor = 0x1043,
>  		.subdevice = 0x80f3,
> -- 
> 1.6.3.3
>