[ALSA] emu10k1 - Fix STAC9758 front channel
For some time now, some users of STAC9758 (emu10k1) would have no sound on
their front channels. This can be fixed (at least for me) by unmuting head
phone volume and setting it to 0dB before removing the 'Front Playback'
control. For details, cf.
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2308
Find the appropriate patch attached.
Credits to: Raymond
Signed-off-by: Rolf Stefan Wilke <stefan.wilke@uni-ulm.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/emu10k1/emumixer.c b/sound/pci/emu10k1/emumixer.c
index 0981af8..4db6e1c 100644
--- a/sound/pci/emu10k1/emumixer.c
+++ b/sound/pci/emu10k1/emumixer.c
@@ -1582,6 +1582,7 @@
if (emu->ac97->id == AC97_ID_STAC9758) {
emu->rear_ac97 = 1;
snd_emu10k1_ptr_write(emu, AC97SLOT, 0, AC97SLOT_CNTR|AC97SLOT_LFE|AC97SLOT_REAR_LEFT|AC97SLOT_REAR_RIGHT);
+ snd_ac97_write_cache(emu->ac97, AC97_HEADPHONE, 0x0202);
}
/* remove unused AC97 controls */
snd_ac97_write_cache(emu->ac97, AC97_SURROUND_MASTER, 0x0202);