RE: volume control (mixer) won't work with cmi 9739 (via chipset) onkernel 2.6

RE: volume control (mixer) won't work with cmi 9739 (via chipset) onkernel 2.6

[C.L. Tien - 田承禮]

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Kristof,

Please use the attached patch file, and install as follows,

1. download alsa-driver 1.0.0rc2 at ftp://ftp.alsa-project.org/pub/driver/alsa-driver-1.0.0rc2.tar.bz2

2. untar by "tar xjf alsa-driver-1.0.0rc2.tar.bz2"
3. untar the patch file by "tar xzf alsa-driver-1.0.0rc2.tar.gz"
4. apply the patch at the alsa-driver-1.0.0rc2 path "patch -p2 < alsa-1.0.0rc2.patch"
5. Following steps are for build alsa drivers. Please refer to INSTALL in alsa-driver path.
5a. ./configure
5b. make
5c. log as super user
5d. make install
5e. ./snddevices

6. Add folowing lines in /etc/modules.conf:
# ALSA portion
alias char-major-116 snd
# OSS/Free portion
alias char-major-14 soundcore
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
alias snd-card-0 snd-intel8x0 <--- this depends on your HW configuration
alias sound-slot-0 snd-card-0

7. Now try to load driver by "modprobe snd-intel8x0"
8. run aumix or other mixer to tune volume settings, default value is 0 for ALSA drivers.

The 9739 has no PCM volume/mute and master volume doesn't control PCM DAC output, so this must be done by software.

Sincerely,
ChenLi Tien


-----Original Message-----
From:	Kristof vansant [mailto:de_lupus@pandora.be]
Sent:	2004/1/5 [星期一] 下午 02:33
To:	alsa-devel@lists.sourceforge.net
Cc:	
Subject:	[Alsa-devel] volume control (mixer) won't work with cmi 9739 (via chipset) onkernel 2.6
Mixer apps won't work. To have to have sound I have to put PCM on 100%.
Are there plans to fix this issue with cmi 9739 or are ther already
patches available somewhere?

Ps: master volume won't even work.

[lupus@d51521f8a card0]$ cat ac97#0
0-0/0: C-Media Electronics CMI9739
 
Capabilities     :
DAC resolution   : 16-bit
ADC resolution   : 16-bit
3D enhancement   : No 3D Stereo Enhancement
 
Current setup
Mic gain         : +0dB [+0dB]
POP path         : pre 3D
Sim. stereo      : off
3D enhancement   : off
Loudness         : off
Mono output      : MIX
Mic select       : Mic1
ADC/DAC loopback : off
Extended ID      : codec=0 rev=1 LDAC SDAC CDAC DSA=0 SPDIF DRA
Extended status  : SPCV LDAC SDAC CDAC SPDIF=res SPDIF
SPDIF Control    : Consumer PCM Category=0x2 Generation=1 Rate=48kHz






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