Re: Annoying whitenoise sound coming from snd_hda enabled chipset

On Sat, Feb 21, 2009 at 10:35 AM, Benjamin Kaduk <kaduk_at_mit.edu> wrote:
> On Sat, 21 Feb 2009, Alexander Motin wrote:
>
>> Ben Kaduk wrote:
>>>
>>> On Sat, Feb 21, 2009 at 8:06 AM, Alexander Motin <mav_at_freebsd.org> wrote:
>>>>
>>>> Garrett Cooper wrote:
>>>>>
>>>>>   I don't know how else to describe it, but when I turn up my
>>>>> speakers enough (50%+) and don't have any sound playing, I hear a
>>>>> whitenoise hiss coming out of them. When I change webpages (nvidia
>>>>> driver is GIANT locked) or do something else kernel intensive it stops
>>>>> for a brief second, but apart from that it's an annoying trill sound
>>>>> almost like a mosquito humming around me waiting to be swatted.
>>>>
>>>> I think it may be radio interference with disconnected microphone
>>>> inputs.
>>>> Try to set all unneeded mixer volumes to 0, especially mic, monitor,
>>>> speaker
>>>> and mix. Inputs often have too sensitive 20-30dB pre-amplifiers. Some
>>>> codecs
>>>> have them on all inputs.
>>>
>>> It's hard to be sure, since I'm not sure that I could describe what I
>>> hear any better than Garret did, but I think I'm seeing the same sort
>>> of thing on my work desktop.  I'll try setting unneeded volumes to
>>> zero the next time I'm in, and see if that helps.
>>>
>>> dmesg and pciconf are available here:
>>> http://stuff.mit.edu/afs/sipb.mit.edu/user/kaduk/freebsd/periphrasis/
>>
>> I see there some old 7.0-STABLE dmesg without any pcm. There is nothing to
>> talk about. If you wish to have good working HDA, update to recent STABLE or
>> at least take driver from there.
>
> Oops, I had been blocking on updating from 7 to current because of
> a bounce zone bug that was causing the box to panic, and I didn't
> update the dmesg after I did finally upgrade.
>
> Should be updated, now.
>
> Sorry about that,
>
> Ben Kaduk

    Unfortunately I must use mix though or line-in doesn't function
from my console peripherals. It does appear to be the culprit
unfortunately.
    So I suppose I have to live with this issue until my SB Audigy
card comes :(? This is something that should be noted in the driver
manpage or you'll get more annoyed folks with support emails like this
one ><...
Thanks,
-Garrett