Does the laptop have a built-in microphone that could be causing feedback
with the speaker?
This was the problem on my laptop. I (appear to) have fixed it with aumix:
# cat /etc/.aumixrc
vol:51:51:P
synth:50:50:P
pcm:50:50:P
speaker:50:50:P
line:50:50:P
mic:0:0:P
cd:50:50:R
rec:50:50:P
line1:50:50:P
line2:50:50:P
(note the "mic" line has zeroes).
Of course this disables the built in microphone but that is no loss to me.
I don't know how the windows drivers work around this problem, but there
must be some way of doing it w/o disabling the mic.
If you can bear the sound, try running aumix(1), xmixer(1), or similar tool
and try to zero out the microphone input. If the sound stops, I think that
proves it is feedback.
Karl Runge
On Mon, 11 Dec 2000, Brice Gibson <[EMAIL PROTECTED]> wrote:
> when I boot up linux on a dual boot laptop (Win98) after either the modem
> (ltmodem) or the sound (maestro) load at startup I get this terribly loud
> oscillating sound coming from my speakers. Everything has been fine for
> several days now, then this started. I do not know if it is the modem or
> the sound card because they load one after the other quick enough that I
> cannot tell when it starts. Any ideas?
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