From owner-freebsd-current@FreeBSD.ORG Fri Jul 24 18:43:59 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 6E29810656CA for ; Fri, 24 Jul 2009 18:43:59 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from cmail.optima.ua (cmail.optima.ua [195.248.191.121]) by mx1.freebsd.org (Postfix) with ESMTP id DE1248FC20 for ; Fri, 24 Jul 2009 18:43:58 +0000 (UTC) (envelope-from mav@FreeBSD.org) Received: from [212.86.226.226] (account mav@alkar.net HELO mavbook.mavhome.dp.ua) by cmail.optima.ua (CommuniGate Pro SMTP 5.2.9) with ESMTPSA id 249677873; Fri, 24 Jul 2009 21:43:55 +0300 Message-ID: <4A6A00E9.8020106@FreeBSD.org> Date: Fri, 24 Jul 2009 21:43:53 +0300 From: Alexander Motin User-Agent: Thunderbird 2.0.0.21 (X11/20090405) MIME-Version: 1.0 To: Yoshihiro Ota References: <1235218982.00077642.1235207402@10.7.7.3> <499FFC5F.3020903@FreeBSD.org> <47d0403c0902210949i74473bc5j57c923e13c85e89@mail.gmail.com> <49A04510.5030405@FreeBSD.org> <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> In-Reply-To: <20090723172423.0337cf35.ota@j.email.ne.jp> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: FreeBSD Current Subject: Re: Annoying whitenoise sound coming from snd_hda enabled chipset X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Jul 2009 18:43:59 -0000 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