1 files changed, 3 insertions, 0 deletions

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 124c63f4c457..52ce07534e5b 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3196,6 +3196,8 @@ static int alc_auto_ch_mode_put(struct snd_kcontrol *kcontrol,
         for (i = 0; i < spec->multi_ios; i++)
                 alc_set_multi_io(codec, i, i < ch);
         spec->multiout.max_channels = spec->ext_channel_count;
+        if (spec->need_dac_fix && !spec->const_channel_count)
+                spec->multiout.num_dacs = spec->multiout.max_channels / 2;
         return 1;
 }
 
@@ -3642,6 +3644,7 @@ static int patch_alc880(struct hda_codec *codec)
         codec->spec = spec;
 
         spec->mixer_nid = 0x0b;
+        spec->need_dac_fix = 1;
 
         board_config = alc_board_config(codec, ALC880_MODEL_LAST,
                                         alc880_models, alc880_cfg_tbl);