[AG-TECH] RAT with Soundblaster Audigy problem
Derek Piper
dcpiper at indiana.edu
Thu Mar 9 13:55:37 CST 2006
Hi,
I've been trying to solve the problem of our Linux A/V machine having
crackly,poppy sound. Turning gain to almost nothing helps alleviate it,
but it's still there when I play back a recording my sound or meetings
via AGVCR. Everyone elses sound is fine (i.e. from the townhall), so
it's not AGVCR. It's a 3Ghz P4, 1GB RAM, running kernel 2.6.15.6 and a
Soundblaster Live! card. It's running Debian Sarge with ALSA installed
and the appropriate driver in the kernel (EMU10k). ALSA OSS API support
is also enabled too.
I thought I would try using a different soundcard, a Soundblaster
Audigy to see if that made any difference, but then I was unable to
start RAT - it failed with a 'elem->type == SND_MIXER_ELEM_SIMPLE'
failed'' message. I wondered if my RAT was old and didn't support ALSA
or something, so I compiled the CVS version. Now I get the following
when I start RAT (it doesn't die, just keeps printing the message with
no UI)
audio_read: Resource temporarily unavailable
Googling for this it appears that someone posted about this problem a
long time ago (2001) and never did a final resolution, or if they did
they never posted it.
Anyone have any ideas what the problem could be? I'm thinking that an
SB Audigy under Linux for AG is probably fairly common so it's probably
something simply and silly. I'm curious if anyone else has run into this
problem? Couple of output of some possibly pertinent /proc files added
below.
Thanks,
Derek
[root at iri-av /root]# cat /proc/asound/pcm
00-00: emu10k1 : ADC Capture/Standard PCM Playback : playback 32 : capture 1
00-01: emu10k1 mic : Mic Capture : capture 1
00-02: emu10k1 efx : Multichannel Capture/PT Playback : playback 8 :
capture 1
00-03: emu10k1 : Multichannel Playback : playback 1
00-04: p16v : p16v : playback 1 : capture 1
[root at iri-av /root]# cat /proc/asound/oss/sndstat
Sound Driver:3.8.1a-980706 (ALSA v1.0.10rc3 emulation code)
Kernel: Linux iri-av 2.6.15.6 #1 PREEMPT Thu Mar 9 14:44:07 EST 2006 i686
Config options: 0
Installed drivers:
Type 10: ALSA emulation
Card config:
Audigy 2 [Unknown] (rev.4, serial:0x10031102) at 0xdf00, irq 20
Audio devices:
0: ADC Capture/Standard PCM Playback (DUPLEX)
Synth devices: NOT ENABLED IN CONFIG
Midi devices:
0: Audigy MPU-401 (UART)
Timers:
7: system timer
Mixers:
0: SigmaTel STAC9721,23
--
Derek Piper - dcpiper at indiana.edu - (812) 856 0111
IRI 323, School of Informatics
Indiana University, Bloomington, Indiana
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