At Thu, 1 Oct 2009 00:32:31 -0400, Daniel Chen wrote:

On Wed, Sep 30, 2009 at 2:06 AM, Takashi Iwai tiwai@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@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@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