ALSA: hda - Fix silent output regression with ALC861

The 3.1 kernel has a regression for ALC861 codec where no sound output
is heard with the default setup.  It's because the amps in DACs aren't
properly unmuted while the output mixers are assigned only to pins.

This patch fixes the missing initialization of DACs when no mixer is
assigned to them.

Tested-by: Andrea Iob <andrea_iob@yahoo.it>
Cc: <stable@kernel.org> [v3.1+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 80d6add8a620e23fba3c7790b949eeb202d1a8b8..9693059dec84326b00d0366e0851459b82c85ce3 100644 (file)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3329,6 +3329,12 @@ static void alc_auto_set_output_and_unmute(struct hda_codec *codec,
        if (nid)
                snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE,
                                    AMP_OUT_ZERO);
+
+       /* unmute DAC if it's not assigned to a mixer */
+       nid = alc_look_for_out_mute_nid(codec, pin, dac);
+       if (nid == mix && nid_has_mute(codec, dac, HDA_OUTPUT))
+               snd_hda_codec_write(codec, dac, 0, AC_VERB_SET_AMP_GAIN_MUTE,
+                                   AMP_OUT_ZERO);
 }
 
 static void alc_auto_init_multi_out(struct hda_codec *codec)