paul blakeley wrote:
I have installed linux on a number of PCs over the last year or so.
Each PC having a different audio chipset. Recently I have installed
linux on PCs with the ALC888 and CS4299 chipset. I was able to work
out the CS4299 chipset basically downloading the chipset block diagram
from the manufacturer. I am sure I mapped all mixer controls but I
had to guess some mixer controls. The ALC888 is different though,
looking at the chipset block diagram there are potentially 50 simple
mixer controls. The alsa mixer has around half that.
The initialization and configuration of HDA codecs should be described
by a table in the BIOS, but the snd-hda-intel driver has workarounds
for many motherboards.
The ALC888 is handled by the ALC883-specific code.
With this chipset I am having trouble capturing from the line-in and
mic input. I can only capture from the line-in. And even with this
the signal is distorted.
Please try the 1.0.15rc1 driver, there have been many changes in the
HDA code since 1.0.14.
If the driver doesn't know your motherboard, it is possible that you
have more success if you load the driver with one of the model options.
(See ALSA-Configuration.txt for a list of supported ALC883 models.)
HTH
Clemens
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