[LAU] snapper people do not have alsa after all?

[2g]

am on iBookG4
have Slackintoh,DebianPPC(stable&unstable),UbuntuPPC7.04 on it
only Ubuntu made sound without doing manual fix
at this moment all of the are using its distro's default kernel(non-low-latency)

jack related things never worked if i had -dalsa in the jackd line
and at last i found out that
jackd -R -doss -r48000 -p1024 -n2
would (kind of) do the job
could play chuck things on Debian&Ubuntu

but now wondering what this
"only -doss works" aspect mean and result into
 maybe what we have is oss that is doing fake alsa?
then we cannot have several apps making sounds at the same time via jack?

on Slackintosh had to put this in /etc/modprobe.d/alsa:

alias char-major-116 snd
alias char-major-14 soundcore
alias snd-card-0 snd-powermac
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
alias /dev/mixer snd-mixer-oss
alias /dev/dsp snd-pcm-oss
alias /dev/midi snd-seq-oss
options snd cards_limit=1

then most of the things work like as if alsa is there
but the alsa version of chuck claims about sound device
and the oss version of chuck gives an segmentation error
jack version of chuck seemed to do okay with -doss but with no sound

on Debian had to put "snd-powermac" in /etc/modules
and choose "alsa" as default sound device in /ect/libao.conf
with already having this in /etc/modprobe.d/alsa-base:

-----8<---
# Cause optional modules to be loaded above generic modules
-----8<---
install snd-portman2x4 /sbin/modprobe --ignore-install snd-portman2x4
$CMDLINE_OPTS && /lib/alsa/mod
probe-post-install snd-portman2x4
install snd-powermac /sbin/modprobe --ignore-install snd-powermac
$CMDLINE_OPTS && /lib/alsa/modprob
e-post-install snd-powermac
install snd-pxa2xx-ac97 /sbin/modprobe --ignore-install
snd-pxa2xx-ac97 $CMDLINE_OPTS && /lib/alsa/m
-----8<-----

on Ubuntu didn't even have to do alsaconf
while doing alsaconf didn't work properly on other distros

-- 
2g
http://micro.ispretty.com