[bisected] snd_hda_intel, 2.6.37: automuting on headphone connect broken; headphone connecter no longer shown in userspace

[bisected] snd_hda_intel, 2.6.37: automuting on headphone connect broken; headphone connecter no longer shown in userspace

[Nirbheek Chauhan]

Hello,

Upon upgrading to 2.6.37,
auto-muting-laptop-speakers-on-headphone-connect stopped working, and
the headphone connector completely disappeared from alsamixer as well
as the pulseaudio volume control panel. The headphone jack was still
transmitting sound, though.

I bisected the problem, with 'good' being v2.6.36, and found the
commit below as the first bad commit. Reverting it on v2.6.37 fixes
the problem. I also tried the latest alsa-kernel master git tree,
which had the same problem.

alsa-info when 'good':

http://www.alsa-project.org/db/?f=a0b5c95f764a0b01746be46f989685996e1f9210

alsa-info when 'bad':

http://www.alsa-project.org/db/?f=30f30ca5461f03b98ab6c7c611cf24ea4526f537

Note: both were taken without X running, before pulseaudio came up.

================
03642c9a444079aa13f0864383a8f9ca04bfd198 is the first bad commit
commit 03642c9a444079aa13f0864383a8f9ca04bfd198
Author: Takashi Iwai <tiwai@suse.de>
Date:   Wed Sep 8 15:28:19 2010 +0200

    ALSA: hda - Clear left-over hp_pins in snd_hda_parse_pin_def_config()

    In snd_hda_parse_def_config(), some unused values may remain in hp_pins[]
    array during the headphone-reassignment workaround.  This patch clears
    the unused array members.

    Signed-off-by: Takashi Iwai <tiwai@suse.de>

:040000 040000 34724336a75f74263423f28d64450d65e5ed948d
8d136fce8661ad2df35ac3c4a9ca1c712c9833ed M	sound

================

The patch was:

================
>From 03642c9a444079aa13f0864383a8f9ca04bfd198 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 8 Sep 2010 15:28:19 +0200
Subject: [PATCH] ALSA: hda - Clear left-over hp_pins in
snd_hda_parse_pin_def_config()

In snd_hda_parse_def_config(), some unused values may remain in hp_pins[]
array during the headphone-reassignment workaround.  This patch clears
the unused array members.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/pci/hda/hda_codec.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 2980c27..bfdde7b 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -4558,6 +4558,8 @@ int snd_hda_parse_pin_def_config(struct hda_codec *codec,
                        memmove(sequences_hp + i, sequences_hp + i + 1,
                                sizeof(sequences_hp[0]) * (cfg->hp_outs - i));
                }
+               memset(cfg->hp_pins + cfg->hp_outs, 0,
+                      sizeof(hda_nid_t) * (AUTO_CFG_MAX_OUTS - cfg->hp_outs));
        }

        /* sort by sequence */
-- 
1.7.2.2
================

-- 
~Nirbheek Chauhan

Gentoo GNOME+Mozilla Team

Re: [bisected] snd_hda_intel, 2.6.37: automuting on headphone connect broken; headphone connecter no longer shown in userspace

[Takashi Iwai]

At Wed, 5 Jan 2011 13:07:41 +0530,
Nirbheek Chauhan wrote:
> 
> Hello,
> 
> Upon upgrading to 2.6.37,
> auto-muting-laptop-speakers-on-headphone-connect stopped working, and
> the headphone connector completely disappeared from alsamixer as well
> as the pulseaudio volume control panel. The headphone jack was still
> transmitting sound, though.
> 
> I bisected the problem, with 'good' being v2.6.36, and found the
> commit below as the first bad commit. Reverting it on v2.6.37 fixes
> the problem. I also tried the latest alsa-kernel master git tree,
> which had the same problem.
> 
> alsa-info when 'good':
> 
> http://www.alsa-project.org/db/?f=a0b5c95f764a0b01746be46f989685996e1f9210
> 
> alsa-info when 'bad':
> 
> http://www.alsa-project.org/db/?f=30f30ca5461f03b98ab6c7c611cf24ea4526f537
> 
> Note: both were taken without X running, before pulseaudio came up.
> 
> ================
> 03642c9a444079aa13f0864383a8f9ca04bfd198 is the first bad commit
> commit 03642c9a444079aa13f0864383a8f9ca04bfd198
> Author: Takashi Iwai <tiwai@suse.de>
> Date:   Wed Sep 8 15:28:19 2010 +0200
> 
>     ALSA: hda - Clear left-over hp_pins in snd_hda_parse_pin_def_config()
> 
>     In snd_hda_parse_def_config(), some unused values may remain in hp_pins[]
>     array during the headphone-reassignment workaround.  This patch clears
>     the unused array members.
> 
>     Signed-off-by: Takashi Iwai <tiwai@suse.de>
> 
> :040000 040000 34724336a75f74263423f28d64450d65e5ed948d
> 8d136fce8661ad2df35ac3c4a9ca1c712c9833ed M	sound
> 
> ================

It seems that the driver worked casually in the earlier versions :)
Does the patch below fix your problem?

Note that the "Headphone" control will still not appear even with this
patch, but these two outputs are controlled by "Front" and "Surround"
controls.  The lack of "Headphone" is no regression but simply it
shouldn't have been there.

I'll work on 2.6.38 tree for better handling of multi headphone
cases.


thanks,

Takashi

===
>From b2d0576055bd1cafcd91a23cf85064815f1396cd Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 10 Jan 2011 14:47:35 +0100
Subject: [PATCH] ALSA: hda - Fix multi-headphone handling for Realtek codecs

When multiple headphone pins are defined without line-out pins, the
driver takes them as primary outputs.  But it forgot to set line_out_type
to HP by assuming there is some rest of HP pins.  This results in some
mis-handling of these pins for Realtek codec parser.  It takes as if
these are pure line-out jacks.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: <stable@kernel.org>
---
 sound/pci/hda/hda_codec.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 98b6d02..05e5ec8 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -4571,6 +4571,9 @@ int snd_hda_parse_pin_def_config(struct hda_codec *codec,
 		}
 		memset(cfg->hp_pins + cfg->hp_outs, 0,
 		       sizeof(hda_nid_t) * (AUTO_CFG_MAX_OUTS - cfg->hp_outs));
+		if (!cfg->hp_outs)
+			cfg->line_out_type = AUTO_PIN_HP_OUT;
+
 	}
 
 	/* sort by sequence */
-- 
1.7.3.4

Re: [bisected] snd_hda_intel, 2.6.37: automuting on headphone connect broken; headphone connecter no longer shown in userspace

[Takashi Iwai]

At Mon, 10 Jan 2011 14:54:25 +0100,
Takashi Iwai wrote:
> 
> At Wed, 5 Jan 2011 13:07:41 +0530,
> Nirbheek Chauhan wrote:
> > 
> > Hello,
> > 
> > Upon upgrading to 2.6.37,
> > auto-muting-laptop-speakers-on-headphone-connect stopped working, and
> > the headphone connector completely disappeared from alsamixer as well
> > as the pulseaudio volume control panel. The headphone jack was still
> > transmitting sound, though.
> > 
> > I bisected the problem, with 'good' being v2.6.36, and found the
> > commit below as the first bad commit. Reverting it on v2.6.37 fixes
> > the problem. I also tried the latest alsa-kernel master git tree,
> > which had the same problem.
> > 
> > alsa-info when 'good':
> > 
> > http://www.alsa-project.org/db/?f=a0b5c95f764a0b01746be46f989685996e1f9210
> > 
> > alsa-info when 'bad':
> > 
> > http://www.alsa-project.org/db/?f=30f30ca5461f03b98ab6c7c611cf24ea4526f537
> > 
> > Note: both were taken without X running, before pulseaudio came up.
> > 
> > ================
> > 03642c9a444079aa13f0864383a8f9ca04bfd198 is the first bad commit
> > commit 03642c9a444079aa13f0864383a8f9ca04bfd198
> > Author: Takashi Iwai <tiwai@suse.de>
> > Date:   Wed Sep 8 15:28:19 2010 +0200
> > 
> >     ALSA: hda - Clear left-over hp_pins in snd_hda_parse_pin_def_config()
> > 
> >     In snd_hda_parse_def_config(), some unused values may remain in hp_pins[]
> >     array during the headphone-reassignment workaround.  This patch clears
> >     the unused array members.
> > 
> >     Signed-off-by: Takashi Iwai <tiwai@suse.de>
> > 
> > :040000 040000 34724336a75f74263423f28d64450d65e5ed948d
> > 8d136fce8661ad2df35ac3c4a9ca1c712c9833ed M	sound
> > 
> > ================
> 
> It seems that the driver worked casually in the earlier versions :)
> Does the patch below fix your problem?
> 
> Note that the "Headphone" control will still not appear even with this
> patch, but these two outputs are controlled by "Front" and "Surround"
> controls.  The lack of "Headphone" is no regression but simply it
> shouldn't have been there.
> 
> I'll work on 2.6.38 tree for better handling of multi headphone
> cases.

The patch is below.  Give it a try.


Takashi

===
>From bcb2f0f517ebae7350526bbde8912ad187147e2d Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 10 Jan 2011 15:45:23 +0100
Subject: [PATCH] ALSA: hda - Add support for multiple headphone/speaker controls for Realtek

So far, Realtek auto-parser assumed that the multiple pins are only for
line-outs, and assigned the channel names like Front, Surround, etc for
the multiple outputs.  But, there are devices that have multiple
headphones, and these can be better controlled with the corresponding
control-name like "Headphone" with indicies.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/pci/hda/patch_realtek.c |  137 ++++++++++++++++++++---------------------
 1 files changed, 68 insertions(+), 69 deletions(-)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index b4f7895..0ecd75e 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -5068,6 +5068,25 @@ static int alc880_auto_fill_dac_nids(struct alc_spec *spec,
 	return 0;
 }
 
+static const char *alc_get_line_out_pfx(const struct auto_pin_cfg *cfg,
+					bool can_be_master)
+{
+	if (!cfg->hp_outs && !cfg->speaker_outs && can_be_master)
+		return "Master";
+
+	switch (cfg->line_out_type) {
+	case AUTO_PIN_SPEAKER_OUT:
+		return "Speaker";
+	case AUTO_PIN_HP_OUT:
+		return "Headphone";
+	default:
+		if (cfg->line_outs == 1)
+			return "PCM";
+		break;
+	}
+	return NULL;
+}
+
 /* add playback controls from the parsed DAC table */
 static int alc880_auto_create_multi_out_ctls(struct alc_spec *spec,
 					     const struct auto_pin_cfg *cfg)
@@ -5075,6 +5094,7 @@ static int alc880_auto_create_multi_out_ctls(struct alc_spec *spec,
 	static const char *chname[4] = {
 		"Front", "Surround", NULL /*CLFE*/, "Side"
 	};
+	const char *pfx = alc_get_line_out_pfx(cfg, false);
 	hda_nid_t nid;
 	int i, err;
 
@@ -5082,7 +5102,7 @@ static int alc880_auto_create_multi_out_ctls(struct alc_spec *spec,
 		if (!spec->multiout.dac_nids[i])
 			continue;
 		nid = alc880_idx_to_mixer(alc880_dac_to_idx(spec->multiout.dac_nids[i]));
-		if (i == 2) {
+		if (!pfx && i == 2) {
 			/* Center/LFE */
 			err = add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
 					      "Center",
@@ -5109,18 +5129,17 @@ static int alc880_auto_create_multi_out_ctls(struct alc_spec *spec,
 			if (err < 0)
 				return err;
 		} else {
-			const char *pfx;
-			if (cfg->line_outs == 1 &&
-			    cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
-				pfx = "Speaker";
-			else
-				pfx = chname[i];
-			err = add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL, pfx,
+			const char *name = pfx;
+			if (!name)
+				name = chname[i];
+			err = __add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
+						name, i,
 					  HDA_COMPOSE_AMP_VAL(nid, 3, 0,
 							      HDA_OUTPUT));
 			if (err < 0)
 				return err;
-			err = add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE, pfx,
+			err = __add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE,
+					       name, i,
 					  HDA_COMPOSE_AMP_VAL(nid, 3, 2,
 							      HDA_INPUT));
 			if (err < 0)
@@ -12085,13 +12104,8 @@ static int alc262_auto_create_multi_out_ctls(struct alc_spec *spec,
 	spec->multiout.dac_nids = spec->private_dac_nids;
 	spec->multiout.dac_nids[0] = 2;
 
-	if (!cfg->speaker_pins[0] && !cfg->hp_pins[0])
-		pfx = "Master";
-	else if (cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
-		pfx = "Speaker";
-	else if (cfg->line_out_type == AUTO_PIN_HP_OUT)
-		pfx = "Headphone";
-	else
+	pfx = alc_get_line_out_pfx(cfg, true);
+	if (!pfx)
 		pfx = "Front";
 	for (i = 0; i < 2; i++) {
 		err = alc262_add_out_sw_ctl(spec, cfg->line_out_pins[i], pfx, i);
@@ -15885,13 +15899,16 @@ static int alc861_auto_fill_dac_nids(struct hda_codec *codec,
 	return 0;
 }
 
-static int alc861_create_out_sw(struct hda_codec *codec, const char *pfx,
-				hda_nid_t nid, unsigned int chs)
+static int __alc861_create_out_sw(struct hda_codec *codec, const char *pfx,
+				  hda_nid_t nid, int idx, unsigned int chs)
 {
-	return add_pb_sw_ctrl(codec->spec, ALC_CTL_WIDGET_MUTE, pfx,
+	return __add_pb_sw_ctrl(codec->spec, ALC_CTL_WIDGET_MUTE, pfx, idx,
 			   HDA_COMPOSE_AMP_VAL(nid, chs, 0, HDA_OUTPUT));
 }
 
+#define alc861_create_out_sw(codec, pfx, nid, chs) \
+	__alc861_create_out_sw(codec, pfx, nid, 0, chs)
+
 /* add playback controls from the parsed DAC table */
 static int alc861_auto_create_multi_out_ctls(struct hda_codec *codec,
 					     const struct auto_pin_cfg *cfg)
@@ -15900,26 +15917,15 @@ static int alc861_auto_create_multi_out_ctls(struct hda_codec *codec,
 	static const char *chname[4] = {
 		"Front", "Surround", NULL /*CLFE*/, "Side"
 	};
+	const char *pfx = alc_get_line_out_pfx(cfg, true);
 	hda_nid_t nid;
 	int i, err;
 
-	if (cfg->line_outs == 1) {
-		const char *pfx = NULL;
-		if (!cfg->hp_outs)
-			pfx = "Master";
-		else if (cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
-			pfx = "Speaker";
-		if (pfx) {
-			nid = spec->multiout.dac_nids[0];
-			return alc861_create_out_sw(codec, pfx, nid, 3);
-		}
-	}
-
 	for (i = 0; i < cfg->line_outs; i++) {
 		nid = spec->multiout.dac_nids[i];
 		if (!nid)
 			continue;
-		if (i == 2) {
+		if (!pfx && i == 2) {
 			/* Center/LFE */
 			err = alc861_create_out_sw(codec, "Center", nid, 1);
 			if (err < 0)
@@ -15928,7 +15934,10 @@ static int alc861_auto_create_multi_out_ctls(struct hda_codec *codec,
 			if (err < 0)
 				return err;
 		} else {
-			err = alc861_create_out_sw(codec, chname[i], nid, 3);
+			const char *name = pfx;
+			if (!name)
+				name = chname[i];
+			err = __alc861_create_out_sw(codec, name, nid, i, 3);
 			if (err < 0)
 				return err;
 		}
@@ -17033,6 +17042,7 @@ static int alc861vd_auto_create_multi_out_ctls(struct alc_spec *spec,
 					     const struct auto_pin_cfg *cfg)
 {
 	static const char *chname[4] = {"Front", "Surround", "CLFE", "Side"};
+	const char *pfx = alc_get_line_out_pfx(cfg, true);
 	hda_nid_t nid_v, nid_s;
 	int i, err;
 
@@ -17046,7 +17056,7 @@ static int alc861vd_auto_create_multi_out_ctls(struct alc_spec *spec,
 				alc880_dac_to_idx(
 					spec->multiout.dac_nids[i]));
 
-		if (i == 2) {
+		if (!pfx && i == 2) {
 			/* Center/LFE */
 			err = add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
 					      "Center",
@@ -17073,24 +17083,17 @@ static int alc861vd_auto_create_multi_out_ctls(struct alc_spec *spec,
 			if (err < 0)
 				return err;
 		} else {
-			const char *pfx;
-			if (cfg->line_outs == 1 &&
-			    cfg->line_out_type == AUTO_PIN_SPEAKER_OUT) {
-				if (!cfg->hp_pins)
-					pfx = "Speaker";
-				else
-					pfx = "PCM";
-			} else
-				pfx = chname[i];
-			err = add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL, pfx,
+			const char *name = pfx;
+			if (!name)
+				name = chname[i];
+			err = __add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
+						name, i,
 					  HDA_COMPOSE_AMP_VAL(nid_v, 3, 0,
 							      HDA_OUTPUT));
 			if (err < 0)
 				return err;
-			if (cfg->line_outs == 1 &&
-			    cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
-				pfx = "Speaker";
-			err = add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE, pfx,
+			err = __add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE,
+					       name, i,
 					  HDA_COMPOSE_AMP_VAL(nid_s, 3, 2,
 							      HDA_INPUT));
 			if (err < 0)
@@ -19078,20 +19081,24 @@ static int alc662_auto_fill_dac_nids(struct hda_codec *codec,
 	return 0;
 }
 
-static inline int alc662_add_vol_ctl(struct alc_spec *spec, const char *pfx,
-			      hda_nid_t nid, unsigned int chs)
+static inline int __alc662_add_vol_ctl(struct alc_spec *spec, const char *pfx,
+				       hda_nid_t nid, int idx, unsigned int chs)
 {
-	return add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL, pfx,
+	return __add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL, pfx, idx,
 			   HDA_COMPOSE_AMP_VAL(nid, chs, 0, HDA_OUTPUT));
 }
 
-static inline int alc662_add_sw_ctl(struct alc_spec *spec, const char *pfx,
-			     hda_nid_t nid, unsigned int chs)
+static inline int __alc662_add_sw_ctl(struct alc_spec *spec, const char *pfx,
+				      hda_nid_t nid, int idx, unsigned int chs)
 {
-	return add_pb_sw_ctrl(spec, ALC_CTL_WIDGET_MUTE, pfx,
+	return __add_pb_sw_ctrl(spec, ALC_CTL_WIDGET_MUTE, pfx, idx,
 			   HDA_COMPOSE_AMP_VAL(nid, chs, 0, HDA_INPUT));
 }
 
+#define alc662_add_vol_ctl(spec, pfx, nid, chs) \
+	__alc662_add_vol_ctl(spec, pfx, nid, 0, chs)
+#define alc662_add_sw_ctl(spec, pfx, nid, chs) \
+	__alc662_add_sw_ctl(spec, pfx, nid, 0, chs)
 #define alc662_add_stereo_vol(spec, pfx, nid) \
 	alc662_add_vol_ctl(spec, pfx, nid, 3)
 #define alc662_add_stereo_sw(spec, pfx, nid) \
@@ -19105,6 +19112,7 @@ static int alc662_auto_create_multi_out_ctls(struct hda_codec *codec,
 	static const char *chname[4] = {
 		"Front", "Surround", NULL /*CLFE*/, "Side"
 	};
+	const char *pfx = alc_get_line_out_pfx(cfg, true);
 	hda_nid_t nid, mix;
 	int i, err;
 
@@ -19115,7 +19123,7 @@ static int alc662_auto_create_multi_out_ctls(struct hda_codec *codec,
 		mix = alc662_dac_to_mix(codec, cfg->line_out_pins[i], nid);
 		if (!mix)
 			continue;
-		if (i == 2) {
+		if (!pfx && i == 2) {
 			/* Center/LFE */
 			err = alc662_add_vol_ctl(spec, "Center", nid, 1);
 			if (err < 0)
@@ -19130,22 +19138,13 @@ static int alc662_auto_create_multi_out_ctls(struct hda_codec *codec,
 			if (err < 0)
 				return err;
 		} else {
-			const char *pfx;
-			if (cfg->line_outs == 1 &&
-			    cfg->line_out_type == AUTO_PIN_SPEAKER_OUT) {
-				if (cfg->hp_outs)
-					pfx = "Speaker";
-				else
-					pfx = "PCM";
-			} else
-				pfx = chname[i];
-			err = alc662_add_vol_ctl(spec, pfx, nid, 3);
+			const char *name = pfx;
+			if (!name)
+				name = chname[i];
+			err = __alc662_add_vol_ctl(spec, name, nid, i, 3);
 			if (err < 0)
 				return err;
-			if (cfg->line_outs == 1 &&
-			    cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
-				pfx = "Speaker";
-			err = alc662_add_sw_ctl(spec, pfx, mix, 3);
+			err = __alc662_add_sw_ctl(spec, name, mix, i, 3);
 			if (err < 0)
 				return err;
 		}
-- 
1.7.3.4

Re: [bisected] snd_hda_intel, 2.6.37: automuting on headphone connect broken; headphone connecter no longer shown in userspace

[Nirbheek Chauhan]

On Mon, Jan 10, 2011 at 7:24 PM, Takashi Iwai <tiwai@suse.de> wrote:
> At Wed, 5 Jan 2011 13:07:41 +0530,
> Nirbheek Chauhan wrote:
>> Upon upgrading to 2.6.37,
>> auto-muting-laptop-speakers-on-headphone-connect stopped working, and
>> the headphone connector completely disappeared from alsamixer as well
>> as the pulseaudio volume control panel. The headphone jack was still
>> transmitting sound, though.
>>
>> I bisected the problem, with 'good' being v2.6.36, and found the
>> commit below as the first bad commit. Reverting it on v2.6.37 fixes
>> the problem. I also tried the latest alsa-kernel master git tree,
>> which had the same problem.
>>
>> alsa-info when 'good':
>>
>> http://www.alsa-project.org/db/?f=a0b5c95f764a0b01746be46f989685996e1f9210
>>
>> alsa-info when 'bad':
>>
>> http://www.alsa-project.org/db/?f=30f30ca5461f03b98ab6c7c611cf24ea4526f537
>>
>> Note: both were taken without X running, before pulseaudio came up.
>>
>> ================
>> 03642c9a444079aa13f0864383a8f9ca04bfd198 is the first bad commit
>> commit 03642c9a444079aa13f0864383a8f9ca04bfd198
>> Author: Takashi Iwai <tiwai@suse.de>
>> Date:   Wed Sep 8 15:28:19 2010 +0200
>>
>>     ALSA: hda - Clear left-over hp_pins in snd_hda_parse_pin_def_config()
>>
[snip]
>
> It seems that the driver worked casually in the earlier versions :)
> Does the patch below fix your problem?
>
> Note that the "Headphone" control will still not appear even with this
> patch, but these two outputs are controlled by "Front" and "Surround"
> controls.  The lack of "Headphone" is no regression but simply it
> shouldn't have been there.
>

I tested it, and the patch below does exactly what you describe it's
supposed to do. Auto-muting and volume control is the way it used to
be -- somewhat weird, but not a regression from 2.6.36. As a humble
reporter, I agree that it's perfect for -stable.

Thank you!

> I'll work on 2.6.38 tree for better handling of multi headphone
> cases.
>

Results of the second patch are in a reply to the other email.

[snip]
> ===
> From b2d0576055bd1cafcd91a23cf85064815f1396cd Mon Sep 17 00:00:00 2001
> From: Takashi Iwai <tiwai@suse.de>
> Date: Mon, 10 Jan 2011 14:47:35 +0100
> Subject: [PATCH] ALSA: hda - Fix multi-headphone handling for Realtek codecs
>
> When multiple headphone pins are defined without line-out pins, the
> driver takes them as primary outputs.  But it forgot to set line_out_type
> to HP by assuming there is some rest of HP pins.  This results in some
> mis-handling of these pins for Realtek codec parser.  It takes as if
> these are pure line-out jacks.
>
> Signed-off-by: Takashi Iwai <tiwai@suse.de>
> Cc: <stable@kernel.org>
> ---
>  sound/pci/hda/hda_codec.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
> index 98b6d02..05e5ec8 100644
> --- a/sound/pci/hda/hda_codec.c
> +++ b/sound/pci/hda/hda_codec.c
> @@ -4571,6 +4571,9 @@ int snd_hda_parse_pin_def_config(struct hda_codec *codec,
>                }
>                memset(cfg->hp_pins + cfg->hp_outs, 0,
>                       sizeof(hda_nid_t) * (AUTO_CFG_MAX_OUTS - cfg->hp_outs));
> +               if (!cfg->hp_outs)
> +                       cfg->line_out_type = AUTO_PIN_HP_OUT;
> +
>        }
>
>        /* sort by sequence */
> --
> 1.7.3.4
>
>



-- 
~Nirbheek Chauhan

Gentoo GNOME+Mozilla Team

Re: [bisected] snd_hda_intel, 2.6.37: automuting on headphone connect broken; headphone connecter no longer shown in userspace

[Nirbheek Chauhan]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset=UTF-8, Size: 20195 bytes --]

On Mon, Jan 10, 2011 at 8:19 PM, Takashi Iwai <tiwai@suse.de> wrote:
> At Mon, 10 Jan 2011 14:54:25 +0100,
> Takashi Iwai wrote:
>>
>> At Wed, 5 Jan 2011 13:07:41 +0530,
>> Nirbheek Chauhan wrote:
>> >
>> > Hello,
>> >
>> > Upon upgrading to 2.6.37,
>> > auto-muting-laptop-speakers-on-headphone-connect stopped working, and
>> > the headphone connector completely disappeared from alsamixer as well
>> > as the pulseaudio volume control panel. The headphone jack was still
>> > transmitting sound, though.
>> >
>> > I bisected the problem, with 'good' being v2.6.36, and found the
>> > commit below as the first bad commit. Reverting it on v2.6.37 fixes
>> > the problem. I also tried the latest alsa-kernel master git tree,
>> > which had the same problem.
>> >
>> > alsa-info when 'good':
>> >
>> > http://www.alsa-project.org/db/?f=a0b5c95f764a0b01746be46f989685996e1f9210
>> >
>> > alsa-info when 'bad':
>> >
>> > http://www.alsa-project.org/db/?f=30f30ca5461f03b98ab6c7c611cf24ea4526f537
>> >
>> > Note: both were taken without X running, before pulseaudio came up.
>> >
>> > ================
>> > 03642c9a444079aa13f0864383a8f9ca04bfd198 is the first bad commit
>> > commit 03642c9a444079aa13f0864383a8f9ca04bfd198
>> > Author: Takashi Iwai <tiwai@suse.de>
>> > Date:   Wed Sep 8 15:28:19 2010 +0200
>> >
>> >     ALSA: hda - Clear left-over hp_pins in snd_hda_parse_pin_def_config()
>> >
>> >     In snd_hda_parse_def_config(), some unused values may remain in hp_pins[]
>> >     array during the headphone-reassignment workaround.  This patch clears
>> >     the unused array members.
>> >
>> >     Signed-off-by: Takashi Iwai <tiwai@suse.de>
>> >
>> > :040000 040000 34724336a75f74263423f28d64450d65e5ed948d
>> > 8d136fce8661ad2df35ac3c4a9ca1c712c9833ed M  sound
>> >
>> > ================
>>
>> It seems that the driver worked casually in the earlier versions :)
>> Does the patch below fix your problem?
>>
>> Note that the "Headphone" control will still not appear even with this
>> patch, but these two outputs are controlled by "Front" and "Surround"
>> controls.  The lack of "Headphone" is no regression but simply it
>> shouldn't have been there.
>>
>> I'll work on 2.6.38 tree for better handling of multi headphone
>> cases.
>
> The patch is below.  Give it a try.
>

This patch made the jacks and their alsamixer controls function
exactly as I expected them to!

(I have to admit, at first I applied only this patch without the
previous one, and that made things really weird. I had fully
documented the weirdness before I realised that the first patch might
not have been *just* for stable)

alsamixer layout:
[Master] [Headphone] [Headphone 1] [Speaker] [PCM] [Mic 1] [Mic Boost 1]

alsa-info:
http://www.alsa-project.org/db/?f=34790490c2d70f019b14b22f8e94289425b1bcd6

* `Speaker` is only toggle-mute
* `PCM` has no toggle-mute
* `Master` affects audio in all outputs
* Inserting a jack into either headphone socket mutes the laptop speakers
* `Headphone` and `Headphone 1` control their respective headphones
(maybe they should be named Headphone 1, Headphone 2?)
* `Speaker` mutes the laptop speakers
* `PCM` affects audio in all outputs

All this is without pulseaudio running. Pulseaudio doesn't seem to be
able to handle multiple headphones nicely, and I can't control which
connector an audio stream goes to at all (not a regression, I would
note). But I guess this one is for the PA devs :-)

I'll be using both these patches, and will report any bugs I find.

Thanks a lot!

>
> Takashi
>
> ===
> From bcb2f0f517ebae7350526bbde8912ad187147e2d Mon Sep 17 00:00:00 2001
> From: Takashi Iwai <tiwai@suse.de>
> Date: Mon, 10 Jan 2011 15:45:23 +0100
> Subject: [PATCH] ALSA: hda - Add support for multiple headphone/speaker controls for Realtek
>
> So far, Realtek auto-parser assumed that the multiple pins are only for
> line-outs, and assigned the channel names like Front, Surround, etc for
> the multiple outputs.  But, there are devices that have multiple
> headphones, and these can be better controlled with the corresponding
> control-name like "Headphone" with indicies.
>
> Signed-off-by: Takashi Iwai <tiwai@suse.de>
> ---
>  sound/pci/hda/patch_realtek.c |  137 ++++++++++++++++++++---------------------
>  1 files changed, 68 insertions(+), 69 deletions(-)
>
> diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
> index b4f7895..0ecd75e 100644
> --- a/sound/pci/hda/patch_realtek.c
> +++ b/sound/pci/hda/patch_realtek.c
> @@ -5068,6 +5068,25 @@ static int alc880_auto_fill_dac_nids(struct alc_spec *spec,
>        return 0;
>  }
>
> +static const char *alc_get_line_out_pfx(const struct auto_pin_cfg *cfg,
> +                                       bool can_be_master)
> +{
> +       if (!cfg->hp_outs && !cfg->speaker_outs && can_be_master)
> +               return "Master";
> +
> +       switch (cfg->line_out_type) {
> +       case AUTO_PIN_SPEAKER_OUT:
> +               return "Speaker";
> +       case AUTO_PIN_HP_OUT:
> +               return "Headphone";
> +       default:
> +               if (cfg->line_outs == 1)
> +                       return "PCM";
> +               break;
> +       }
> +       return NULL;
> +}
> +
>  /* add playback controls from the parsed DAC table */
>  static int alc880_auto_create_multi_out_ctls(struct alc_spec *spec,
>                                             const struct auto_pin_cfg *cfg)
> @@ -5075,6 +5094,7 @@ static int alc880_auto_create_multi_out_ctls(struct alc_spec *spec,
>        static const char *chname[4] = {
>                "Front", "Surround", NULL /*CLFE*/, "Side"
>        };
> +       const char *pfx = alc_get_line_out_pfx(cfg, false);
>        hda_nid_t nid;
>        int i, err;
>
> @@ -5082,7 +5102,7 @@ static int alc880_auto_create_multi_out_ctls(struct alc_spec *spec,
>                if (!spec->multiout.dac_nids[i])
>                        continue;
>                nid = alc880_idx_to_mixer(alc880_dac_to_idx(spec->multiout.dac_nids[i]));
> -               if (i == 2) {
> +               if (!pfx && i == 2) {
>                        /* Center/LFE */
>                        err = add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
>                                              "Center",
> @@ -5109,18 +5129,17 @@ static int alc880_auto_create_multi_out_ctls(struct alc_spec *spec,
>                        if (err < 0)
>                                return err;
>                } else {
> -                       const char *pfx;
> -                       if (cfg->line_outs == 1 &&
> -                           cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
> -                               pfx = "Speaker";
> -                       else
> -                               pfx = chname[i];
> -                       err = add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL, pfx,
> +                       const char *name = pfx;
> +                       if (!name)
> +                               name = chname[i];
> +                       err = __add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
> +                                               name, i,
>                                          HDA_COMPOSE_AMP_VAL(nid, 3, 0,
>                                                              HDA_OUTPUT));
>                        if (err < 0)
>                                return err;
> -                       err = add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE, pfx,
> +                       err = __add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE,
> +                                              name, i,
>                                          HDA_COMPOSE_AMP_VAL(nid, 3, 2,
>                                                              HDA_INPUT));
>                        if (err < 0)
> @@ -12085,13 +12104,8 @@ static int alc262_auto_create_multi_out_ctls(struct alc_spec *spec,
>        spec->multiout.dac_nids = spec->private_dac_nids;
>        spec->multiout.dac_nids[0] = 2;
>
> -       if (!cfg->speaker_pins[0] && !cfg->hp_pins[0])
> -               pfx = "Master";
> -       else if (cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
> -               pfx = "Speaker";
> -       else if (cfg->line_out_type == AUTO_PIN_HP_OUT)
> -               pfx = "Headphone";
> -       else
> +       pfx = alc_get_line_out_pfx(cfg, true);
> +       if (!pfx)
>                pfx = "Front";
>        for (i = 0; i < 2; i++) {
>                err = alc262_add_out_sw_ctl(spec, cfg->line_out_pins[i], pfx, i);
> @@ -15885,13 +15899,16 @@ static int alc861_auto_fill_dac_nids(struct hda_codec *codec,
>        return 0;
>  }
>
> -static int alc861_create_out_sw(struct hda_codec *codec, const char *pfx,
> -                               hda_nid_t nid, unsigned int chs)
> +static int __alc861_create_out_sw(struct hda_codec *codec, const char *pfx,
> +                                 hda_nid_t nid, int idx, unsigned int chs)
>  {
> -       return add_pb_sw_ctrl(codec->spec, ALC_CTL_WIDGET_MUTE, pfx,
> +       return __add_pb_sw_ctrl(codec->spec, ALC_CTL_WIDGET_MUTE, pfx, idx,
>                           HDA_COMPOSE_AMP_VAL(nid, chs, 0, HDA_OUTPUT));
>  }
>
> +#define alc861_create_out_sw(codec, pfx, nid, chs) \
> +       __alc861_create_out_sw(codec, pfx, nid, 0, chs)
> +
>  /* add playback controls from the parsed DAC table */
>  static int alc861_auto_create_multi_out_ctls(struct hda_codec *codec,
>                                             const struct auto_pin_cfg *cfg)
> @@ -15900,26 +15917,15 @@ static int alc861_auto_create_multi_out_ctls(struct hda_codec *codec,
>        static const char *chname[4] = {
>                "Front", "Surround", NULL /*CLFE*/, "Side"
>        };
> +       const char *pfx = alc_get_line_out_pfx(cfg, true);
>        hda_nid_t nid;
>        int i, err;
>
> -       if (cfg->line_outs == 1) {
> -               const char *pfx = NULL;
> -               if (!cfg->hp_outs)
> -                       pfx = "Master";
> -               else if (cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
> -                       pfx = "Speaker";
> -               if (pfx) {
> -                       nid = spec->multiout.dac_nids[0];
> -                       return alc861_create_out_sw(codec, pfx, nid, 3);
> -               }
> -       }
> -
>        for (i = 0; i < cfg->line_outs; i++) {
>                nid = spec->multiout.dac_nids[i];
>                if (!nid)
>                        continue;
> -               if (i == 2) {
> +               if (!pfx && i == 2) {
>                        /* Center/LFE */
>                        err = alc861_create_out_sw(codec, "Center", nid, 1);
>                        if (err < 0)
> @@ -15928,7 +15934,10 @@ static int alc861_auto_create_multi_out_ctls(struct hda_codec *codec,
>                        if (err < 0)
>                                return err;
>                } else {
> -                       err = alc861_create_out_sw(codec, chname[i], nid, 3);
> +                       const char *name = pfx;
> +                       if (!name)
> +                               name = chname[i];
> +                       err = __alc861_create_out_sw(codec, name, nid, i, 3);
>                        if (err < 0)
>                                return err;
>                }
> @@ -17033,6 +17042,7 @@ static int alc861vd_auto_create_multi_out_ctls(struct alc_spec *spec,
>                                             const struct auto_pin_cfg *cfg)
>  {
>        static const char *chname[4] = {"Front", "Surround", "CLFE", "Side"};
> +       const char *pfx = alc_get_line_out_pfx(cfg, true);
>        hda_nid_t nid_v, nid_s;
>        int i, err;
>
> @@ -17046,7 +17056,7 @@ static int alc861vd_auto_create_multi_out_ctls(struct alc_spec *spec,
>                                alc880_dac_to_idx(
>                                        spec->multiout.dac_nids[i]));
>
> -               if (i == 2) {
> +               if (!pfx && i == 2) {
>                        /* Center/LFE */
>                        err = add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
>                                              "Center",
> @@ -17073,24 +17083,17 @@ static int alc861vd_auto_create_multi_out_ctls(struct alc_spec *spec,
>                        if (err < 0)
>                                return err;
>                } else {
> -                       const char *pfx;
> -                       if (cfg->line_outs == 1 &&
> -                           cfg->line_out_type == AUTO_PIN_SPEAKER_OUT) {
> -                               if (!cfg->hp_pins)
> -                                       pfx = "Speaker";
> -                               else
> -                                       pfx = "PCM";
> -                       } else
> -                               pfx = chname[i];
> -                       err = add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL, pfx,
> +                       const char *name = pfx;
> +                       if (!name)
> +                               name = chname[i];
> +                       err = __add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL,
> +                                               name, i,
>                                          HDA_COMPOSE_AMP_VAL(nid_v, 3, 0,
>                                                              HDA_OUTPUT));
>                        if (err < 0)
>                                return err;
> -                       if (cfg->line_outs == 1 &&
> -                           cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
> -                               pfx = "Speaker";
> -                       err = add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE, pfx,
> +                       err = __add_pb_sw_ctrl(spec, ALC_CTL_BIND_MUTE,
> +                                              name, i,
>                                          HDA_COMPOSE_AMP_VAL(nid_s, 3, 2,
>                                                              HDA_INPUT));
>                        if (err < 0)
> @@ -19078,20 +19081,24 @@ static int alc662_auto_fill_dac_nids(struct hda_codec *codec,
>        return 0;
>  }
>
> -static inline int alc662_add_vol_ctl(struct alc_spec *spec, const char *pfx,
> -                             hda_nid_t nid, unsigned int chs)
> +static inline int __alc662_add_vol_ctl(struct alc_spec *spec, const char *pfx,
> +                                      hda_nid_t nid, int idx, unsigned int chs)
>  {
> -       return add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL, pfx,
> +       return __add_pb_vol_ctrl(spec, ALC_CTL_WIDGET_VOL, pfx, idx,
>                           HDA_COMPOSE_AMP_VAL(nid, chs, 0, HDA_OUTPUT));
>  }
>
> -static inline int alc662_add_sw_ctl(struct alc_spec *spec, const char *pfx,
> -                            hda_nid_t nid, unsigned int chs)
> +static inline int __alc662_add_sw_ctl(struct alc_spec *spec, const char *pfx,
> +                                     hda_nid_t nid, int idx, unsigned int chs)
>  {
> -       return add_pb_sw_ctrl(spec, ALC_CTL_WIDGET_MUTE, pfx,
> +       return __add_pb_sw_ctrl(spec, ALC_CTL_WIDGET_MUTE, pfx, idx,
>                           HDA_COMPOSE_AMP_VAL(nid, chs, 0, HDA_INPUT));
>  }
>
> +#define alc662_add_vol_ctl(spec, pfx, nid, chs) \
> +       __alc662_add_vol_ctl(spec, pfx, nid, 0, chs)
> +#define alc662_add_sw_ctl(spec, pfx, nid, chs) \
> +       __alc662_add_sw_ctl(spec, pfx, nid, 0, chs)
>  #define alc662_add_stereo_vol(spec, pfx, nid) \
>        alc662_add_vol_ctl(spec, pfx, nid, 3)
>  #define alc662_add_stereo_sw(spec, pfx, nid) \
> @@ -19105,6 +19112,7 @@ static int alc662_auto_create_multi_out_ctls(struct hda_codec *codec,
>        static const char *chname[4] = {
>                "Front", "Surround", NULL /*CLFE*/, "Side"
>        };
> +       const char *pfx = alc_get_line_out_pfx(cfg, true);
>        hda_nid_t nid, mix;
>        int i, err;
>
> @@ -19115,7 +19123,7 @@ static int alc662_auto_create_multi_out_ctls(struct hda_codec *codec,
>                mix = alc662_dac_to_mix(codec, cfg->line_out_pins[i], nid);
>                if (!mix)
>                        continue;
> -               if (i == 2) {
> +               if (!pfx && i == 2) {
>                        /* Center/LFE */
>                        err = alc662_add_vol_ctl(spec, "Center", nid, 1);
>                        if (err < 0)
> @@ -19130,22 +19138,13 @@ static int alc662_auto_create_multi_out_ctls(struct hda_codec *codec,
>                        if (err < 0)
>                                return err;
>                } else {
> -                       const char *pfx;
> -                       if (cfg->line_outs == 1 &&
> -                           cfg->line_out_type == AUTO_PIN_SPEAKER_OUT) {
> -                               if (cfg->hp_outs)
> -                                       pfx = "Speaker";
> -                               else
> -                                       pfx = "PCM";
> -                       } else
> -                               pfx = chname[i];
> -                       err = alc662_add_vol_ctl(spec, pfx, nid, 3);
> +                       const char *name = pfx;
> +                       if (!name)
> +                               name = chname[i];
> +                       err = __alc662_add_vol_ctl(spec, name, nid, i, 3);
>                        if (err < 0)
>                                return err;
> -                       if (cfg->line_outs == 1 &&
> -                           cfg->line_out_type == AUTO_PIN_SPEAKER_OUT)
> -                               pfx = "Speaker";
> -                       err = alc662_add_sw_ctl(spec, pfx, mix, 3);
> +                       err = __alc662_add_sw_ctl(spec, name, mix, i, 3);
>                        if (err < 0)
>                                return err;
>                }
> --
> 1.7.3.4
>
>



-- 
~Nirbheek Chauhan

Gentoo GNOME+Mozilla Team
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Re: [bisected] snd_hda_intel, 2.6.37: automuting on headphone connect broken; headphone connecter no longer shown in userspace

[Takashi Iwai]

At Mon, 10 Jan 2011 23:31:19 +0530,
Nirbheek Chauhan wrote:
> 
> On Mon, Jan 10, 2011 at 8:19 PM, Takashi Iwai <tiwai@suse.de> wrote:
> > At Mon, 10 Jan 2011 14:54:25 +0100,
> > Takashi Iwai wrote:
> >>
> >> At Wed, 5 Jan 2011 13:07:41 +0530,
> >> Nirbheek Chauhan wrote:
> >> >
> >> > Hello,
> >> >
> >> > Upon upgrading to 2.6.37,
> >> > auto-muting-laptop-speakers-on-headphone-connect stopped working, and
> >> > the headphone connector completely disappeared from alsamixer as well
> >> > as the pulseaudio volume control panel. The headphone jack was still
> >> > transmitting sound, though.
> >> >
> >> > I bisected the problem, with 'good' being v2.6.36, and found the
> >> > commit below as the first bad commit. Reverting it on v2.6.37 fixes
> >> > the problem. I also tried the latest alsa-kernel master git tree,
> >> > which had the same problem.
> >> >
> >> > alsa-info when 'good':
> >> >
> >> > http://www.alsa-project.org/db/?f=a0b5c95f764a0b01746be46f989685996e1f9210
> >> >
> >> > alsa-info when 'bad':
> >> >
> >> > http://www.alsa-project.org/db/?f=30f30ca5461f03b98ab6c7c611cf24ea4526f537
> >> >
> >> > Note: both were taken without X running, before pulseaudio came up.
> >> >
> >> > ================
> >> > 03642c9a444079aa13f0864383a8f9ca04bfd198 is the first bad commit
> >> > commit 03642c9a444079aa13f0864383a8f9ca04bfd198
> >> > Author: Takashi Iwai <tiwai@suse.de>
> >> > Date:   Wed Sep 8 15:28:19 2010 +0200
> >> >
> >> >     ALSA: hda - Clear left-over hp_pins in snd_hda_parse_pin_def_config()
> >> >
> >> >     In snd_hda_parse_def_config(), some unused values may remain in hp_pins[]
> >> >     array during the headphone-reassignment workaround.  This patch clears
> >> >     the unused array members.
> >> >
> >> >     Signed-off-by: Takashi Iwai <tiwai@suse.de>
> >> >
> >> > :040000 040000 34724336a75f74263423f28d64450d65e5ed948d
> >> > 8d136fce8661ad2df35ac3c4a9ca1c712c9833ed M  sound
> >> >
> >> > ================
> >>
> >> It seems that the driver worked casually in the earlier versions :)
> >> Does the patch below fix your problem?
> >>
> >> Note that the "Headphone" control will still not appear even with this
> >> patch, but these two outputs are controlled by "Front" and "Surround"
> >> controls.  The lack of "Headphone" is no regression but simply it
> >> shouldn't have been there.
> >>
> >> I'll work on 2.6.38 tree for better handling of multi headphone
> >> cases.
> >
> > The patch is below.  Give it a try.
> >
> 
> This patch made the jacks and their alsamixer controls function
> exactly as I expected them to!
> 
> (I have to admit, at first I applied only this patch without the
> previous one, and that made things really weird. I had fully
> documented the weirdness before I realised that the first patch might
> not have been *just* for stable)
> 
> alsamixer layout:
> [Master] [Headphone] [Headphone 1] [Speaker] [PCM] [Mic 1] [Mic Boost 1]
> 
> alsa-info:
> http://www.alsa-project.org/db/?f=34790490c2d70f019b14b22f8e94289425b1bcd6
> 
> * `Speaker` is only toggle-mute
> * `PCM` has no toggle-mute
> * `Master` affects audio in all outputs
> * Inserting a jack into either headphone socket mutes the laptop speakers
> * `Headphone` and `Headphone 1` control their respective headphones
> (maybe they should be named Headphone 1, Headphone 2?)
> * `Speaker` mutes the laptop speakers
> * `PCM` affects audio in all outputs
> 
> All this is without pulseaudio running. Pulseaudio doesn't seem to be
> able to handle multiple headphones nicely, and I can't control which
> connector an audio stream goes to at all (not a regression, I would
> note). But I guess this one is for the PA devs :-)
> 
> I'll be using both these patches, and will report any bugs I find.

Good to hear.  Both patches are now in sound git tree and included
in the upcoming pull-request for 2.6.38 kernel.


thanks,

Takashi