[Bug 278648] Re: [regression]snd-hda-intel sound input does not work at all with Conexant CX20549 (Venice) chips

[c4pp4]

Summary:

command:
lspci -vnn | grep -A1 Audio
output:
00:1b.0 Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD Audio Controller [8086:284b] (rev 03)
Subsystem: Lenovo Device [17aa:20ac]

command:
cat /proc/asound/card*/codec\#*|grep -i codec
output:
Codec: Conexant CX20549 (Venice)

Problem with it:
Lenovo R61i built-in microphone doesn't work at all.
Lenovo R61i and Fujitsu V5505 [1734:110e] output sound is distorted when volume is 100% because PCM level is over 0db (e.g. bug #285866,#290463,#291798,#461521).

Solution:
To correct situation you can update your system with package from my PPA by adding ppa:c4pp4/cx20549 to your system's Software Sources.
(https://launchpad.net/~c4pp4/+archive/cx20549)
New update comes out about a week after the official kernel so please be patient and upgrade later from my PPA (except critical security reasons!).

You can force setting (in case of different subsystem id) by editing /etc/modprobe.d/alsa-base
- with "options snd-hda-intel model=lenovo" for Lenovo R61i settings (mic and pcm)
- with "options snd-hda-intel model=laptop-hpmicsensepcm" for Fujitsu V5505 settings (pcm)

I'm also including patch for Karmic and Lucid.

-- 
[regression]snd-hda-intel sound input does not work at all with Conexant CX20549 (Venice) chips 
https://bugs.launchpad.net/bugs/278648
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