On Wed, Sep 30, 2009 at 2:06 AM, Takashi Iwai <tiwai@xxxxxxx> 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. -Dan
From 9c64d1c19954f1ed91cb170855829903fcf3b7e3 Mon Sep 17 00:00:00 2001 From: Daniel T Chen <crimsun@xxxxxxxxxx> 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@xxxxxxxxxx> --- 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
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