[mythtv-users] OSS -vs- ALSA sound

[Ian Forde]

On Wed, 2003-10-08 at 21:37, Harondel J. Sibble wrote:
> Sigh, it didn't work, I get the following error
> 
> #alsactl restore
> alsactl: set_control:805: warning: name mismatch (External Amplifier Power 
> Down/Sigmatel 4-Speaker Stereo Playback Switch) for control #73
> alsactl: set_control:805: warning: name mismatch (EMU10K1 PCM Send 
> Routing/Sigmatel Surround Phase Inversion Playback ) for control #74
> alsactl: set_control:906: bad control.74.value index

Hmm... I'd remove all of the alsa modules from memory (using 'modprobe
-r', obviously), make sure you don't have any pre- or post- entries in
/etc/modules.conf concerning alsa, then check your modules.conf
settings... mine are:

# ALSA configuration
alias char-major-116 snd
options snd major=116 cards_limit=1
alias snd-card-0 snd-emu10k1
options snd-emu10k1 index=0 id="Emu10k1" extin="0x000f" extout=0x1f0f
alias char-major-14 soundcore
alias sound-slot-0 snd-card-0
#
## ALSA-OSS compatibility
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
options snd-pcm-oss dsp_map=0 adsp_map=3
options snd-ac97-codec enable_loopback=1

Do a depmod, fire up any app that plays music, test if you get sound. 
Then do the alsactl restore and test it again... right now I'm *very*
happy to be free of L/R cables coming out of my myth box...

I've found Alsa to be incredibly fussy about its settings - that's why I
keep multiple copies of the aforementioned asound.state file - just in
case things get weird... (and sometimes they do with Myth - though I
can't duplicate it...)

	-I

> Also either way, the amp still doesn't detect an ac3 stream switch into dolby 
> digital mode.
> 
> Any ideas?
-- 
                       __________________________________
                       Ian Forde, RHCE, CCSE, SCNA, SCDME
                       CYTBeN, Inc.
                       ian at duckland.org / ian at cytben.com