From owner-freebsd-current@FreeBSD.ORG Thu Jul 23 23:45:05 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 11FCB106566B for ; Thu, 23 Jul 2009 23:45:05 +0000 (UTC) (envelope-from slyngaas@gmail.com) Received: from mail-ew0-f220.google.com (mail-ew0-f220.google.com [209.85.219.220]) by mx1.freebsd.org (Postfix) with ESMTP id 965748FC17 for ; Thu, 23 Jul 2009 23:45:04 +0000 (UTC) (envelope-from slyngaas@gmail.com) Received: by ewy20 with SMTP id 20so452383ewy.43 for ; Thu, 23 Jul 2009 16:45:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to:cc :content-type:content-transfer-encoding; bh=ydYIZYMBoq4y28F2mUl5B9qpER5P8pJpWc14Ss6Pr88=; b=dPyPINbGAWhZaFRiWbkcllCgegGuRdGj+xUtz9bE+t/Zsxsfm7ug0qcmOm0DcISyZo bQ1OweoPv55XmmA8jHPhslee8sUc5UtuW6IBHG2gw/7iS9Jr7sRg86TBDMvzVEh9o+10 hv5TyPmNmpdeZibgyVnfm/wYkaus1YNEIfgbs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=IK2SG79EhZlfTNmqntXctuLWbs3DByEZMcEciewihKqHrD80YkyoxHh9cR1GudjQsk EtjUU1jAP4nSIkNpIcQIsHYZHPo6Bvk7BP/f7DcGO46nPkWHMroqMMDF6ULkkiHzf9+9 P6HpMvcg3zfJbSIIysrDyYn3HYTU2c5XlyDNc= MIME-Version: 1.0 Sender: slyngaas@gmail.com Received: by 10.216.10.74 with SMTP id 52mr812449weu.226.1248391398069; Thu, 23 Jul 2009 16:23:18 -0700 (PDT) In-Reply-To: <7d6fde3d0902210101yfb42ff6yd0aa31e6f16b5761@mail.gmail.com> References: <7d6fde3d0902210101yfb42ff6yd0aa31e6f16b5761@mail.gmail.com> Date: Fri, 24 Jul 2009 01:23:18 +0200 X-Google-Sender-Auth: 6a66c5e10bf6edf9 Message-ID: <558ffc2b0907231623v2bad80bbref035bd1fd950d39@mail.gmail.com> From: =?UTF-8?Q?St=C3=A5le_Lyngaas?= To: Garrett Cooper Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable 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: Thu, 23 Jul 2009 23:45:05 -0000 On Sat, Feb 21, 2009 at 11:01 AM, Garrett Cooper wrote: > =C2=A0 =C2=A0I 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 suspect this is due to the CPU executing the HLT instruction. Try running the following command: sysctl machdep.cpu_idle_hlt=3D0 --=20 St=C3=A5le Lyngaas