Date: Sat, 21 Feb 2009 13:56:35 -0800 From: Garrett Cooper <yanefbsd@gmail.com> To: Benjamin Kaduk <kaduk@mit.edu> Cc: Alexander Motin <mav@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org>, Ben Kaduk <minimarmot@gmail.com> Subject: Re: Annoying whitenoise sound coming from snd_hda enabled chipset Message-ID: <7d6fde3d0902211356h66b05cfcxf2ebbe9b2a6fd0f0@mail.gmail.com> In-Reply-To: <alpine.GSO.1.10.0902211333260.28932@multics.mit.edu> 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>
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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. 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
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