powerbook (rev III) audio recording capabilities

fafhrd

so, i wrote a little mixer program, just to get reaccustomed to audio OSS programming on linux ... i'd love to learn ALSA, but the pmac drivers didn't seem too happy last I tried them ... however, now I notice the OSS drivers for my revIII powerbook don't seem to support line-in or mic, which this model has ... yet looking through the kernel source, the dmasound_* driver files are riddled with HAS_RECORD defines, and that is turned on in the source (basically) if you have a pmac ... just for fun, here's my output so far:

shr1nk · Tux's lil' helper Joined: 21 Jun 2003 Posts: 90

yea this sounds interesting...

id like to record some lectures when i go to class...

on a side note, i noticed that when i put my pbook rev3 (just bought it last month) that sound dies on wake...

fafhrd · Posted: Mon Sep 08, 2003 5:06 pm Post subject: dies on wake?

my sound definitely does not die on wake -- are you using ALSA or OSS? and do you have pbbuttonsd (or pmud) running?

my sound definitely maintains after sleep, maybe i can help you fix that somehow

shr1nk · Tux's lil' helper Joined: 21 Jun 2003 Posts: 90

i'm using oss complied directly into my kernel with pmud and pbbuttons running

the sound device does not give any errors, but makes no sound after a wakeup from sleep...its wierd cuz the pc thinks the sound works, just that there is no sound

fafhrd · Posted: Mon Sep 08, 2003 7:19 pm Post subject: you don't need both ...

you definitely don't necessarily need both pmud and pbbuttonsd ... pbbuttonsd can fully "take over" responsibilites that pmud offers ... in the gentoo ebuild of pbbutttonsd, the pbbuttonsd.conf file in /etc has "replace_pmud = yes" set by default, and, IMHO, pbbuttonsd works a lot less sketchily and offers more nice (e.g. "volume buttons" work) functionality

try not starting pmud at all, making sure pbbuttonsd "replaces pmud" in the conf file, give a reboot for good measure, and see if sleep works and sound doesn't die ... and, hrm, make sure in the pbbuttonsd conf file "speakers_muted = no" ... but I think that is the default as well ...

post here if it does, in case anyone else has this problem ...

Koalawalawala · Posted: Tue Sep 09, 2003 1:58 am Post subject: sound on wake

I'm using a PB 1GHz, and my sound's fine after wake.
I use the 2.4.22-ben2 kernel sources, the relevant (modular) kernel sound drivers, and pbbuttons. I haven't tried recording from the 'line in' jack, but I have used some USB audio equipment.

My volume buttons work, but they've worked since I started using the 2.4.20 kernel...

-Koala

shr1nk · Tux's lil' helper Joined: 21 Jun 2003 Posts: 90

i will try that
thanks!

i will let you know how it goes

shr1nk · Tux's lil' helper Joined: 21 Jun 2003 Posts: 90

i removed pmud from start up by do a "rc-update del pmud" and restarted my machine

it still does not have sound on wake....the replace pmud option is set in the pbbuttonsd.conf file in /etc....

cselkirk · Apprentice Joined: 09 Jun 2003 Posts: 199 Location: NL

I tested recording from audio-in on a rev-III Powerbook using alsa (0.9.6) and sox .. no joy.

As far as alsa goes, it works perfectly here, the odd latency here and there and pbbuttonsd will fail on boot if the audio is muted on shutdown (fixed with /etc/asound.state) but otherwise I'm fairly happy with it (I don't have any particular need for audio-in though).
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