[alsa-devel] [PATCH] hda-intel: Enable Analog CD Input from internal ATAPI connector on Asus M2N-SLI.

Johannes Stezenbach js at sig21.net
Tue Dec 11 18:46:08 CET 2007


the internal CD connector on my Asus M2N-SLI Deluxe board doesn't
work without the patch below, /proc/asound/card0/codec#0
shows that the pin is disabled (Pin-ctls: 0x00).

I used kernel linux-2.6.24-rc4-190-g94545ba from Linus' git tree.

During my experiments I found that loading the snd-hda-intel
driver with model=auto also enables the CD connector. It seems
that for my board (BIOS version 1102) the BIOS configuration
is correct and the "Asus M2N-SLI" quirk shouldn't be necessary?
I get the following debug output:

ALSA sound/pci/hda/hda_intel.c:727: codec_mask = 0x1
ALSA sound/pci/hda/hda_codec.c:2140: hda_codec: model 'auto' is selected
ALSA sound/pci/hda/hda_codec.c:2760: autoconfig: line_outs=4 (0x12/0x16/0x24/0x25/0x0)
ALSA sound/pci/hda/hda_codec.c:2764:    speaker_outs=0 (0x0/0x0/0x0/0x0/0x0)
ALSA sound/pci/hda/hda_codec.c:2768:    hp_outs=1 (0x11/0x0/0x0/0x0/0x0)
ALSA sound/pci/hda/hda_codec.c:2776:    inputs: mic=0x17, fmic=0x14, line=0x15, fline=0x0, cd=0x18, aux=0x0

(which matches the board's actual connections)

Anyway, if you think the patch below is correct the please apply. It
works fine for me.

There is one thing that I don't get however: If I run aplay it creates
an additional "PCM" mixer control, which however doesn't have any
effect. I guess this is intended for softvol, but I don't need
it. How do I stop aplay from creating this control?
(If it matters, I use Debian unstable, alsa-lib 1.0.15.)


Enable Analog CD Input from internal ATAPI connector on Asus M2N-SLI.

Signed-off-by: Johannes Stezenbach <js at sig21.net>

diff --git a/sound/pci/hda/patch_analog.c b/sound/pci/hda/patch_analog.c
index 196ad3c..8c2aff4 100644
--- a/sound/pci/hda/patch_analog.c
+++ b/sound/pci/hda/patch_analog.c
@@ -2079,6 +2079,8 @@ static struct hda_verb ad1988_6stack_init_verbs[] = {
 	{0x34, AC_VERB_SET_CONNECT_SEL, 0x0},
+	/* Analog CD Input */
 	{ }

More information about the Alsa-devel mailing list