Date: Sat, 21 Feb 2009 13:35:29 -0500 (EST) From: Benjamin Kaduk <kaduk@MIT.EDU> To: Alexander Motin <mav@FreeBSD.org> Cc: Garrett Cooper <yanefbsd@gmail.com>, FreeBSD Current <freebsd-current@FreeBSD.org>, Ben Kaduk <minimarmot@gmail.com> Subject: Re: Annoying whitenoise sound coming from snd_hda enabled chipset Message-ID: <alpine.GSO.1.10.0902211333260.28932@multics.mit.edu> In-Reply-To: <49A04510.5030405@FreeBSD.org> References: <1235218982.00077642.1235207402@10.7.7.3> <499FFC5F.3020903@FreeBSD.org> <47d0403c0902210949i74473bc5j57c923e13c85e89@mail.gmail.com> <49A04510.5030405@FreeBSD.org>
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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
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