| Date | Wed, 09 Nov 2011 13:34:00 -0800 | From | Greg KH <> | Subject | [193/264] ALSA: hda - Fix silent output regression with ALC861 |
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3.1-stable review patch. If anyone has any objections, please let me know.
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From: Takashi Iwai <tiwai@suse.de>
commit 43dea228a3ba5463392281535dfb3d3fe56f4c2c upstream.
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> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- sound/pci/hda/patch_realtek.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3077,6 +3077,12 @@ static void alc_auto_set_output_and_unmu 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)
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