From owner-freebsd-multimedia@FreeBSD.ORG Fri Apr 17 09:07:45 2015 Return-Path: Delivered-To: multimedia@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C4069165 for ; Fri, 17 Apr 2015 09:07:45 +0000 (UTC) Received: from mail.0x20.net (mail.0x20.net [217.69.76.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 824E4D8E for ; Fri, 17 Apr 2015 09:07:45 +0000 (UTC) Received: from e-new.0x20.net (mail.0x20.net [IPv6:2001:aa8:fffb:1::3]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mail.0x20.net (Postfix) with ESMTPS id 42AFF6A6002; Fri, 17 Apr 2015 11:07:42 +0200 (CEST) Received: from e-new.0x20.net (localhost [127.0.0.1]) by e-new.0x20.net (8.14.7/8.14.7) with ESMTP id t3H97f7K055182; Fri, 17 Apr 2015 11:07:42 +0200 (CEST) (envelope-from lars@e-new.0x20.net) Received: (from lars@localhost) by e-new.0x20.net (8.14.7/8.14.7/Submit) id t3H97e5O055034; Fri, 17 Apr 2015 11:07:40 +0200 (CEST) (envelope-from lars) Date: Fri, 17 Apr 2015 11:07:40 +0200 From: Lars Engels To: multimedia@freebsd.org, David Wolfskill Subject: Re: Sound OK using built-in speakers, but loud "static" with headphones Message-ID: <20150417090740.GI20473@e-new.0x20.net> References: <20150416173126.GG36163@albert.catwhisker.org> <20150416174627.GH36163@albert.catwhisker.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="ffsjeLa00pPTU3fi" Content-Disposition: inline In-Reply-To: <20150416174627.GH36163@albert.catwhisker.org> X-Editor: VIM - Vi IMproved 7.4 X-Operation-System: FreeBSD 8.4-RELEASE-p23 User-Agent: Mutt/1.5.23 (2014-03-12) X-BeenThere: freebsd-multimedia@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Multimedia discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Apr 2015 09:07:45 -0000 --ffsjeLa00pPTU3fi Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Apr 16, 2015 at 10:46:27AM -0700, David Wolfskill wrote: > On Thu, Apr 16, 2015 at 10:31:26AM -0700, David Wolfskill wrote: > > ... > > How may I diagnose this? > > ... >=20 > I neglected to point out that I have used these headphones on other > devices without perceiving such static -- so I believe that the > headphones themselves are OK. (Sorry for failing to mention that > earlier.) I "saw" the same yesterday on my notebook. It turned out that the earphones I used have keys to control a smartphone and an integrated microphone. Running "mixer mic 0" and "mixer rec 0" muted the static. --ffsjeLa00pPTU3fi Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQF8BAEBCgBmBQJVMM1cXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ4RjQwMDE3RTRERjUzMTI1N0FGRTUxNDlF NTRDQjM3RDNBMDg5RDZEAAoJEOVMs306CJ1tbp0H/j7VP9r2Nq938S88425ttcQe Ubvu46n+FYQmKHIXtyBdPs4duCrSpdBqTAcmyzrvQ5MJodiUfsl5vpaqfgda+daC IkpBuIkD/Kdxwtc9e3Td9tqhneEgxXH8ihOU32A//01tMWXpkL0Qzd1yz8Qss7vv maTR3bua7Ef/GiaASOvVaDOXj3N/WWCDWa7xu8mOj3jkg9+JHYSxob4GLRTFHN54 bPuo1ll9AJiEyaO9RGBc+aNBLme0NLUxWnoJ97nFnVpjpkt80UsakJCzS9rvl2NM v1NyPKxhjl4bEQvcUEvHIMQEVOQhfwEqclZqfh3KF+448vU5mOPwsAysI5yFd0E= =AgIr -----END PGP SIGNATURE----- --ffsjeLa00pPTU3fi--