Date: Sat, 25 Jul 2009 22:41:10 -0400 From: Yoshihiro Ota <ota@j.email.ne.jp> To: Alexander Motin <mav@FreeBSD.org> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Annoying whitenoise sound coming from snd_hda enabled chipset Message-ID: <20090725224110.8fd4d488.ota@j.email.ne.jp> In-Reply-To: <4A6A00E9.8020106@FreeBSD.org> 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> <20090224004110.e4ad76f4.ota@j.email.ne.jp> <49A45127.3000108@FreeBSD.org> <20090225211656.75c546c3.ota@j.email.ne.jp> <49A6F609.20901@FreeBSD.org> <20090226223106.b56ad289.ota@j.email.ne.jp> <49A7D1C2.6070608@FreeBSD.org> <20090228015207.d7432c0a.ota@j.email.ne.jp> <20090723153734.e1a8bff1.ota@j.email.ne.jp> <4A68BDD7.60408@FreeBSD.org> <20090723172423.0337cf35.ota@j.email.ne.jp> <4A6A00E9.8020106@FreeBSD.org>
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On Fri, 24 Jul 2009 21:43:53 +0300 Alexander Motin <mav@FreeBSD.org> wrote: > Yoshihiro Ota wrote: > > The problem is some mysterious sound like szzzz..... in very low tone and low volume. > > However, it is noticeable and somewhat destructing. > > I usually use 7.1-RELEASE, but as 8.0 being in BETA, I installed 8-BETA1 and BETA2. > > Both of these versions has this noise. > > > > The noise is very much like the same noise I experienced back in February. > > At that time, you, Alexander, fixed the problem. > > I had had used 8-CURRENT until end of April but I was away until this time. > > Because the symptom was smiler, I decided to reply to the old e-mail chain. > > Sorry, I don't remember what have I done that time, if it really was me. > I have reread that thread and haven't found anything except assumptions > that it can be radio interference due to low quality power filtering or > something alike. May be "szzzz..." is just the sound of your disk, CPU, > CPU bus, some power converter, or whatever else. It may depend for > example on powerd running or system load, or C-state used or whatever > else unrelated. > > -- > Alexander Motin That is okay even if you don't have a clue. I have both 7.1-RELEASE and 8-BETA1/2 on the same machine. What ever causing the sound is due to this. If time permits, I will try to do binary search, then. Hiro
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