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#1 2007-03-25 20:39:24

Fal
Member
Registered: 2007-03-21
Posts: 30

problems with sound recording.

I can't record sound. tried a few desktop session recorder (whatever they are [recordmydesktop & istanbul]).
istanbul didn't give so good output but recordmydesktop -device /dev/dsp informed:
ALSA lib pcm.c:(snd_pcm_open_noupdate) Unknown PCM /dev/dsp

Audacity can't record a thing either. Anyone got problems like this? sad

lspci | grep Multimedia =>
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 50)

Sound playing works fine..

Anyone else got problems like this? Have I missed something important?
All necessary modules are loaded (atleast I suppose so).

Tell me if you need more info with this one sad

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#2 2007-03-25 21:51:54

btartsa
Member
Registered: 2004-07-26
Posts: 222

Re: problems with sound recording.

Perhaps you have something muted in alsamixer? Or maybe you need some source of amplification...a pre-amp?

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#3 2007-05-06 20:16:42

rayjgu3
Member
From: Chicago IL usa
Registered: 2004-07-04
Posts: 695

Re: problems with sound recording.

ive just noticed this also
i run kde using audacity to record from input on sound card VIA 8237
pertinent stuff in .~/.audacity-data/audacity.cfg

PlaybackDevice=OSS: /dev/dsp
RecordingDevice=ALSA: VIA 8237: VIA 8237 (hw:0,1)

i believe the recording device used to be "OSS: /dev/dsp
if i change it here it reverts back to ALSA: VIA 8237: VIA 8237 (hw:0,1)
no matter what i change it to
or in audacity>prefferences  i have no choice for recording but
input allows me several choices on main window i can change input devices to record from but none work

when i hit the record button the counter does not move nothing gets recorded though i can hear whats playing on my system

hopefully im not missing anything here if i dont hear anything soon ill file bug
thanks

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#4 2007-05-12 13:17:48

rayjgu3
Member
From: Chicago IL usa
Registered: 2004-07-04
Posts: 695

Re: problems with sound recording.

ok finally got off my butt to look into this a bit more
heres what i found
running kde audacity nor any other app would record but it would play the sound through speakers when enabled. i decided to install/run xfce4, guess what i could record now. so back to kde looking around ~.kde for a bit, googled a bit found someone suggesting look at K>Control Center>Sound Multimedia>Sound System , so im in there not many choices however under the Hardware tab if you uncheck Full duplex then hit Apply
start audacity >edit>prefferences  >input device i got 4 options now put in /dev/dsp apply i can now record again

i havent tracked down why i can no longer record using full duplex or if xfce4 is using full duplex but im gonna keep digging

hope this helps you

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