At Sun, 08 Mar 2009 04:23:26 -0700, Daniel Stodden wrote:

Hi.

I've got a Lenovo Thinkpad T400 with snd_hda_intel:

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03) Subsystem: Lenovo Device 20f2

I think this is the same chip which recently quirks entries to work around docking issues on the Thinkpad x200.

The codec is identified as a conexant CX20561 (Hermosa).

Running Ubuntu 8.10 with 2.6.27, the Volume is extremely low. Quality seems okay, but setting Master and PCM outputs to 100% is barely audible. There's a bunch of similar reports on the Internet. I could not find any workaround but Window users usually report the volume should be fine.

I tried 2.6.28 but to no avail. Will verify against latest git.

Could someone help me fix this? I don't actually know much about the hardware in question, but would also willing to poke a little around in patch_conexant.c, if that could help identifying the issue. Provided someone someone around here has advice on what to try out.

Try the very latest alsa-driver in sound git tree git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git

or the snapshot tarball ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-snapshot.tar.gz

There are some fixes recently regarding Conexant codecs.

If this still doesn't work, please run alsa-info.sh with --no-upload option and attach the generated file. The script is found at http://www.alsa-project.org/alsa-info.sh

thanks,

Takashi