I'm running into some odd problems with alsa 0.9 and the Linux 2.5
kernel. My setup right now is (a) alsa drivers as supplied with the
2.5.10 kernel, plus (b) the alsa library and utils version 0.9.0rc1 (I
had the same problem with linux kernel 2.5.8).
Most important problem: I'm used to having the alsa sound modules
auto-load on demand, and this worked fine for me with alsa 0.5 and
linux kernel 2.4.X. Now, however, if I launch an alsa app (aplay or
alsaplayer for instance) without first manually loading the sound
modules, very bad things happen. Gkrellm shows an ever-increasing
number of processes being started; the system becomes unresponsive and
the only way out that I have found is to reboot the machine (doing
"killall" on the alsa app does not seem to stop the runaway process
escalation).
Secondary problem: If I do "modprobe snd-cs46xx" as root first, alsa
apps are mostly well-behaved. The exception is alsaplayer (version
0.99.59, compiled against the new alsa lib). It says
error on set_period_size (1024)
<snip>
failed to configure output device...trying OSS
and hangs. In OSS mode ("alsaplayer -o oss") it starts fine.
I'm using devfs. Here are the relevant config bits, some of which I
suppose must be wrong:
/etc/devfsd.conf
# ALSA
LOOKUP snd MODLOAD ACTION snd
REGISTER ^sound/.* PERMISSIONS root.www 660
REGISTER ^snd/.* PERMISSIONS root.www 660
/etc/modules.conf
alias char-major-14 soundcore
alias /dev/snd snd-cs46xx
alias /dev/sound snd-pcm-oss
alias char-major-116 snd
options snd snd_major=116 snd_cards_limit=1
above snd-cs46xx snd-pcm-oss
alias snd-card-0 snd-cs46xx
alias sound-slot-0 snd-card-0
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
post-install snd-cs46xx /usr/sbin/alsactl restore
--
Allin Cottrell
Department of Economics
Wake Forest University, NC
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