[Fwd: [ILUG] Re: Buzzing sound card [was jobs jobs jobs.. (and other animals)]

[adam beecher]

This thread just refuses to die dunnit? :)

I should have pointed out that the problem has been solved - Padraig
Finnerty recommended I trying booting linux with "no-hlt", which worked
like a charm. I still have to figger out how to get lilo to do that
*every* time, but I won't be shutting down/rebooting very often so it's
not a major concern. Of course, it's not a permanent fix, but it'll do
until I rebuild the box.

Padraig's email - complete with an explanation from
comp.os.linux.hardware - is attached. Thanks once more Padraig.

adam



Padraig Finnerty wrote:
> 
> On Thu, Apr 27, 2000 at 05:42:20PM +0100 adam beecher wrote:
> >
> > 1) Why does my sound card keep buzzing? Especially when I move the mouse
> > around? Is it the internal speaker, and if so, how do I stop it - it's *very*
> > annoying.
> 
> I had this problem before (AFAIK it was coming from the speaker, not the
> soundcard).  Try adding the 'no-hlt' option at boot time (it worked for
> me).  This is the reason I got from comp.os.linux.hardware:
> 
> "The problem seems to be happening because, unlike Windows, when
> the processor is idle Linux halts the processor. The processor
> then wakes up on an interrupt (e.g. mouse or keyboard event),
> which causes a voltage/current spike resulting in some noise.
> The no-hlt boot option prevents the processor from halting, so
> you do not get the spike when it wakes up.
> 
> The downside to using no-hlt is that the processor will not halt, so it
> will use more power, and run slightly warmer. However since this is how
> it behaves under Windows, this should not be a problem."
> 
> Padraig
> 
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