Annoying whitenoise sound coming from snd_hda enabled chipset
Yoshihiro Ota
ota at j.email.ne.jp
Sun Jul 26 02:41:07 UTC 2009
On Fri, 24 Jul 2009 21:43:53 +0300
Alexander Motin <mav at FreeBSD.org> wrote:
> Yoshihiro Ota wrote:
> > The problem is some mysterious sound like szzzz..... in very low tone and low volume.
> > However, it is noticeable and somewhat destructing.
> > I usually use 7.1-RELEASE, but as 8.0 being in BETA, I installed 8-BETA1 and BETA2.
> > Both of these versions has this noise.
> >
> > The noise is very much like the same noise I experienced back in February.
> > At that time, you, Alexander, fixed the problem.
> > I had had used 8-CURRENT until end of April but I was away until this time.
> > Because the symptom was smiler, I decided to reply to the old e-mail chain.
>
> Sorry, I don't remember what have I done that time, if it really was me.
> I have reread that thread and haven't found anything except assumptions
> that it can be radio interference due to low quality power filtering or
> something alike. May be "szzzz..." is just the sound of your disk, CPU,
> CPU bus, some power converter, or whatever else. It may depend for
> example on powerd running or system load, or C-state used or whatever
> else unrelated.
>
> --
> Alexander Motin
That is okay even if you don't have a clue.
I have both 7.1-RELEASE and 8-BETA1/2 on the same machine.
What ever causing the sound is due to this.
If time permits, I will try to do binary search, then.
Hiro
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