Date: Sun, 22 Feb 2009 00:03:06 +0200 From: Alexander Motin <mav@FreeBSD.org> To: Garrett Cooper <yanefbsd@gmail.com> Cc: FreeBSD Current <freebsd-current@freebsd.org>, Benjamin Kaduk <kaduk@mit.edu>, Ben Kaduk <minimarmot@gmail.com> Subject: Re: Annoying whitenoise sound coming from snd_hda enabled chipset Message-ID: <49A07A1A.2030902@FreeBSD.org> In-Reply-To: <7d6fde3d0902211356h66b05cfcxf2ebbe9b2a6fd0f0@mail.gmail.com> References: <1235218982.00077642.1235207402@10.7.7.3> <499FFC5F.3020903@FreeBSD.org> <47d0403c0902210949i74473bc5j57c923e13c85e89@mail.gmail.com> <49A04510.5030405@FreeBSD.org> <alpine.GSO.1.10.0902211333260.28932@multics.mit.edu> <7d6fde3d0902211356h66b05cfcxf2ebbe9b2a6fd0f0@mail.gmail.com>
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Garrett Cooper wrote: > On Sat, Feb 21, 2009 at 10:35 AM, Benjamin Kaduk <kaduk@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@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. Have you tried to mute other sources specifically? mix is just a sum of inputs, it is not an input itself. You may read driver verbose boot messages to find which inputs are mixed and how they controlled. > 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 ><... It won't help. People never read manuals, especially long ones. :( -- Alexander Motin
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