On Sun, 23 Sep 2001, Chris Rankin wrote:
> Hi,
>
> I have an SB Live! 5.1, and I have noticed that there is now a
> tendency for ALSA to create a really high-pitched screeching sound out
> of my speakers. I am using the version of ALSA checked out of CVS
> today, but this problem goes back several weeks.
>
> The simplest way to do demonstrate this (for me) is to unmute the
> "Mic-Boost" option in alsamixer, regardless of whether the Mic is
> muted or not.
>
> The second way is to raise the volume on my speakers, although not to
> what I might call "excessively loud". It's become a delicate juggling
> act between hearing the sound played and being deafened by the banshee
> scream. This was particularly problematic today because I tried to
> record a 16 bit WAV file through the SB Live! with arecord. The sound
> that came out was *WAY* too quiet, I couldn't use the "Mic Boost", and
> if I tried to raise the volume on my speakers then I was deafened by
> the screeching.
>
> Does anyone have an idea what this might be? I have successfully
> recorded WAV files with ALSA before (Jun 13th 2001 to be precise).
What about this command:
amixer set "AC'97" Playback 0% mute
It digitally routes the AC'97 capture stream back to playback stream.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
SuSE Linux http://www.suse.com
ALSA project http://www.alsa-project.org
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