Subject: Re: [linux-audio-user] ppc audio input..
From: dmotd (inaudible_AT_dart.net.au)
Date: Sat Mar 13 2004 - 08:42:46 EET
hey martin,
thanks for the reply..
my /proc/asound/devices is identical to yours:
1: : sequencer
0: [0- 0]: ctl
16: [0- 0]: digital audio playback
24: [0- 0]: digital audio capture
33: : timer
however, i have no entries in my mixer for 'pcm1' or 'monitor', my
mixer consists of:
master | headphone | headphone detection | line
cd | mic | pc speaker | audiomute | beep
if i do pipe of arecord to hex, no data is listed apart from
the first 30-40 lines of header, which i assume means that this
is a hardware issue and not simply a quiet mixer.
and yes, i have two ppc specific kernels installed, both 2.4.21ppc
and 2.4.24-benh.. neither have an effect on this problem.
ciao,
dmotd
Martin Habets wrote:
> >From: dmotd <inaudible_AT_dart.net.au>
> > i'm using the g3 internal soundcard (chip=burgandy) with both the
> > oss-lite and alsa drivers.. neither driver has improved the
> > situation.. for a bit of clarity, no sound is passed through the
> > chip, and capture/recording doesn't work for any of the inputs, in
> > fact in alsa there are no capture devices available at all and an
> > inspection of '/proc/asound/card0/pcm0c/sub0/status' reveals the
> > unfortunate message 'closed'..
>
> It is normal that the status has closed unless you are actually recording.
> My G4 titanium uses the snapper chip, so we use the same kernel driver.
> What do
> you have in /proc/asound/devices? I get:
> 1: : sequencer
> 0: [0- 0]: ctl
> 16: [0- 0]: digital audio playback
> 24: [0- 0]: digital audio capture
> 33: : timer
>
> If you get a similar entry for capture, we should be able to get it going.
> Make sure your "PCM 1" and "Monitor" entries are turned up in your mixer.
> Like Derek I also have a lot of noise problems, but my best results so far
> are with PCM 1 set to 75%-85% and Monitor set to 90%. I'm still puzzled how
> these two relate.
>
> > on the flipside, os9 has no problems with sound input, which leads
> > me to suspect that it has control of an internal setting that linux
> > does not..
>
> Hmm, haven't checked out the Mac OS side yet. Will have to give that a try
> sometime.
>
> > can anyone shed some light, or perhaps tell me who to politely
> > abuse! btw, i tried alsa-user-list but my msg is trapped in the
> > moderation blackhole...
>
> You could try a friendly mail to: linuxppc-dev_AT_lists.linuxppc.org
> I'm using the PPC specific kernels from:
> http://penguinppc.org/dev/kernel.shtml
> so far with the same results you get (the 2.5 tree realy holds the 2.6
> kernel now).
> But any fixes will be in here first.
>
> Martin
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