On Thu, Jul 17, 2003 at 05:17:20PM +0200, Christian Schneider wrote:
> Hi,
>
> I have a new Creative SoundBlaster Live! 5.1 sound card. I only want to
> use analog line in/out and perhaps mic (no digital output etc.). My
> problem: Playing music works; listening to music/sound from the line in
> connector works, too, but I cannot record it.
Using alsamixer set "AC97" to 0, "AC97 Capture" to 100
and "Capture" to 100. Press the space bar when on "Capture"
to get a 'CAPTURE' above it. If you want to capture from
line, also go to "Line" and press space bar to select
the 'CAPTURE' above it. Or when you want the microphone,
do that when on 'Mic'.
The sheme is more or less like this:
.-<--------feedback------------ 'AC97' <--\
/ \
MIC --- 20db boost on/off --> 'Mic' --> 'Master' --> audible output \
\ \
>--> 'CAPTURE' selector --> 'Capture' --> 'AC97 Capture'
--> whatever is recorded.
Line ---/
Also, the SB Live only has two periods for recording,
if your application set small periods then the total
buffer is small - possibly smaller than the application
is waiting for before processing.
Before recent, an overrun of this (small) buffer caused
the recording stream to be stopped. But this is now
fixed in the current CVS of ALSA, so if nothing else helps
try upgrading.
> What can I do? Do I have to upgrade alsa? Or a probem with the on-board
> sound?
strace is your friend, if the application doesn't
even try to read() - there is a problem other then
the mixer settings.
--
Carlo Wood <[EMAIL PROTECTED]>
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