On Wed, 25 Apr 2007, Bill Burroughs wrote:

> Hi all,
>
> I've just upgraded from a 2.0 sound card to a 5.1 (CMI8738 using cmipic 
> under alsa).  Sound works great, but when I use the M/N keys to change 
> volume, it only changes the levels for the front channels.

This is caused by the driver for your soundcard only affecting those 
channels when you adjust the "master" channel. Use alsamixer to find the 
correct channel name for your card that will control all the channels 
together, then append to MPLAYER_AO_DEV

-mixer-channel channelname

Make sure to also preserve the trailing space.

--Quentin

>
> Bits of my local_conf.py that you might be interested in:
>
> # AUDIO_DEVICE       = '/dev/dsp'      # e.g.: /dev/dsp0, /dev/audio, 
> /dev/alsa/?
> # AUDIO_INPUT_DEVICE = '/dev/dsp1'     # e.g.: /dev/dsp0, /dev/audio, 
> /dev/alsa/?
> # MAJOR_AUDIO_CTRL   = 'VOL'           # Freevo takes control over one audio 
> ctrl
>                                       # 'VOL', 'PCM' 'OGAIN' etc.
> # CONTROL_ALL_AUDIO  = 1               # Should Freevo take complete control 
> of audio
> # MAX_VOLUME         = 90              # Set what you want maximum volume 
> level to be.
> # DEFAULT_VOLUME     = 40              # Set default volume level.
> MAX_VOLUME         = 100              # Set what you want maximum volume 
> level to be.
> DEFAULT_VOLUME     = 70              # Set default volume level.
> # TV_IN_VOLUME       = 60              # Set this to your preferred level 
> 0-100.
> # VCR_IN_VOLUME      = 90              # If you use different input from TV
> # RADIO_IN_VOLUME    = 80              # Set this to your preferred level 
> 0-100.
> # DEV_MIXER          = '/dev/mixer'    # mixer device
>
> #MPLAYER_AO_DEV      = 'oss:/dev/dsp'  # e.g.: oss,sdl,alsa, see mplayer docs
> #MPLAYER_AO_DEV      = 'alsa -channels 4 -af 
> pan=4:1:0:0:0:0:1:0:0:0:0:0.2:0:0:0:0:0.2' # SB Live Value!
> #MPLAYER_AO_DEV      = 'alsa -channels 6 -af 
> pan=4:1:0:0:0:0:1:0:0:0:0:0.2:0:0:0:0:0.2' # CMI8738-MC6
> #MPLAYER_AO_DEV = 'alsa -channels 6 -af 
> pan=6:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1'
>  # CMI8738-MC6 TEST
> MPLAYER_AO_DEV = 'alsa -channels 6 -af 
> pan=6:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1:0:0:0:0:0:0:1'
>  # CMI8738-MC6 TEST
> #MPLAYER_AO_DEV = 'alsa -channels 6' # CMI8738-MC6 TEST
> #MPLAYER_AO_DEV       = 'alsa:device=surround51 -channels 6 -af 
> pan=6:100:0:0:0:100:100:0:100:0:0:100:100:0:0:100:0:0:0:0:0:0:100:0:0 '
>
> Let me know if you want any more settings.
>
> I'm happy to have the volume control just cover the master volume.
>
> Any assistance on the -af pan settings would be greatly appreciated aswell.
>
> Thanks in advance.
>
> :)
> RoNAn
>
> Nothing is true; Everything is permissible...
>
> Send instant messages to your online friends http://au.messenger.yahoo.com
>
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