Date: Sat, 21 Feb 2009 20:16:48 +0200 From: Alexander Motin <mav@FreeBSD.org> To: Ben Kaduk <minimarmot@gmail.com> Cc: Garrett Cooper <yanefbsd@gmail.com>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Annoying whitenoise sound coming from snd_hda enabled chipset Message-ID: <49A04510.5030405@FreeBSD.org> In-Reply-To: <47d0403c0902210949i74473bc5j57c923e13c85e89@mail.gmail.com> References: <1235218982.00077642.1235207402@10.7.7.3> <499FFC5F.3020903@FreeBSD.org> <47d0403c0902210949i74473bc5j57c923e13c85e89@mail.gmail.com>
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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. -- Alexander Motin
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