From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756653AbbAFUzh (ORCPT ); Tue, 6 Jan 2015 15:55:37 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:45133 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756544AbbAFUzf (ORCPT ); Tue, 6 Jan 2015 15:55:35 -0500 Date: Tue, 6 Jan 2015 14:54:13 -0600 From: Felipe Balbi To: Pavel Machek CC: Felipe Balbi , , , , kernel list , linux-arm-kernel , , , , , Subject: Re: 3.19 on Nokia n900: audio quality awful Message-ID: <20150106205413.GF32308@saruman> Reply-To: References: <20150106170433.GA5408@amd> <20150106172545.GK6502@saruman> <20150106175115.GA19487@amd> <20150106202857.GB32308@saruman> <20150106205000.GB13902@amd> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="H4SyuGOnfnj3aJqJ" Content-Disposition: inline In-Reply-To: <20150106205000.GB13902@amd> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --H4SyuGOnfnj3aJqJ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Tue, Jan 06, 2015 at 09:50:00PM +0100, Pavel Machek wrote: > On Tue 2015-01-06 14:28:57, Felipe Balbi wrote: > > On Tue, Jan 06, 2015 at 06:51:15PM +0100, Pavel Machek wrote: > > >=20 > > > On Tue 2015-01-06 11:25:45, Felipe Balbi wrote: > > > > On Tue, Jan 06, 2015 at 06:04:33PM +0100, Pavel Machek wrote: > > > > > Hi! > > > > >=20 > > > > > In 3.18, sound is nice and clear. > > > > >=20 > > > > > In 3.19, sound is unusable. It produces nasty tone when it should= be > > > > > quiet, and there's at least as much noise as is sound. > > > > >=20 > > > > > Unfortunately, list of mixers also changed (and there's cca 120 > > > > > settings), but a) it does not work with the old list and b) nothi= ng I > > > > > could figure out did make the sound usable. Some setting resulted= in > > > > > even more noise. > > > > >=20 > > > > > Any idea what could have caused it? > > > >=20 > > > > $ git bisect start > > > > $ git bisect good v3.18 > > > > $ git bisect bad > > > >=20 > > > > that'll help find what caused it. > > >=20 > > > Telling someone to do hard and time consuming job that probably will > > > not succeed, instead of actually providing help. Very very funny. > >=20 > > you're getting code for free, you're getting help for free. Not many > > people have N900s lying around. Running a bisection is just > > politeness. >=20 > Now you are speaking for yourself or for TI? why bring my employer into the discussion ? > Thanks for your very valuable help. I know how to do a bisection, > thank you. then please do it. > PS: Unfortunately, N900 will not boot using nfsroot in 3.16+ at least, > and boot from MMC card is broken and has been for quite some time. Then how do you know it changed from v3.18 to v3.19-rc ? Certainly you ran v3.18 on N900 to verify that audio quality was better with that kernel. Use the very same method during bisection. --=20 balbi --H4SyuGOnfnj3aJqJ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJUrEt1AAoJEIaOsuA1yqRE0wcP/38DXPEpNZFv/tBPC3xbTcQW vmvW7D3/5jsLURH7V0c6+d+flMypEDmr8tI0siDAS4/OJyRWilv9+ZsMz0/+fKrJ ReYmoz+dzCJ48SG63hm0GxEw2TPwpY8KVMIY/2fZ1e0RUr6AXq5i0GtL99wf9DbE vwxBPwuyilAQHWbXHz7XQCh4YhAP/Y8U2s6sJWIF5NyIHm2tMti5t3ElpGOO60PY EFQezTASweE2T6+dIDE+uSMKfhn9OK+V9DciI2J0eHnQ3OIVcEQCS0KFbOiIm7c3 tFIn5md5x9jNi/PRt9vpFnL6NyTNx3IRUYSqSeJ+WG+dyiyB58zLpgod6+KFL4Y0 G2QZi8vc9uRTcujisr2mofmlj3mvfsKrOusXz+m/G3UKDIBGc4VZiYZZJqVPM8vn sigqf1UQ2eIDn+R+nirfiZf+tV8if+JqFWDtS4ZENDepdpX1Hy2yNCfH+Wl0bLOt dyjqV72RGYGvmlpII/5iDPjpe4Rvot39z9vDrfVDjnTo7NeJXJOqtaYY7MutW0hV UV1UKzZfcZ0VMY4xeWH0rWtEBOXoURnGYAkHYLhEUwYf4jZWcC/MBVeU/FFgX7a9 daPjXEaqk4JJVJT2fyKmeez0PeSGO9ZCc88MlrxHo4I7FL5SsTF/0ZHj2oqtHyRk 1+/nxeTGwVUA67fghULw =Ex4G -----END PGP SIGNATURE----- --H4SyuGOnfnj3aJqJ--