[Alsa-user] ALC883 Detection Issue

[Kip W. <Ki...@th...>]

Greetings,

I have an Intel HDA sound board with a Realtek ALC883 chipset. This is b=
uilt into my four speaker ASUS A7J laptop.

When I modprobe snd-hda-intel, I see the following in the kernel log:

hda_codec: Unknown model for ALC882, trying auto-probe from BIOS...

I have tried experimenting with a number of different model strings for =
snd-hda-intel, all to no avail.

I hear sound, but only out of the front two speakers. Alsamixer shows th=
at it thinks the chipset is the Realtek ALC882 and only gives a slider f=
or Headphone, Front, Line, CD, Mic, ... but with no "Rear" channel.

"speaker-test -c4" confirms this because it only makes an audible hiss w=
ith the front two speakers but immediately goes silent with the back two=
. It looks like it is using the wrong chipset with the wrong speaker con=
figuration.

I have been wrestling with this for weeks and to no avail. I am using Al=
sa 1.0.12.rc1 with kernel 2.6.17.3. In my kernel options I enabled sound=
 but disabled Alsa. I compiled Alsa manually with ./configure --with-car=
ds=3Dhda-intel

Any help would be much appreciated.

--
Kip