From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752373AbdLYKJE (ORCPT ); Mon, 25 Dec 2017 05:09:04 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:44964 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751776AbdLYKJC (ORCPT ); Mon, 25 Dec 2017 05:09:02 -0500 Date: Mon, 25 Dec 2017 11:09:00 +0100 From: Pavel Machek To: vcaputo@pengaru.com Cc: linux-kernel , Takashi Iwai Subject: Re: thinkpad x60: sound problems in 4.15-rc1 was Re: thinkpad x60: sound problems in 4.14.0-next-20171114 Message-ID: <20171225100900.GA3887@amd> References: <20171115111120.GA3265@amd> <20171127163011.GA4462@amd> <20171127183151.GA21620@amd> <20171127184411.GA22165@amd> <20171214095730.GA6150@amd> <20171219020658.qpvxx7fqvrisezs6@shells.gnugeneration.com> <20171219045415.46croaosad656d5v@shells.gnugeneration.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="82I3+IH0IqGh5yIs" Content-Disposition: inline In-Reply-To: <20171219045415.46croaosad656d5v@shells.gnugeneration.com> 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 --82I3+IH0IqGh5yIs Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > > > > > > > It happened first in -next, now it is in 4.15-rc1. > > > > > >=20 > > > > > > So you meant a possible regression between 4.14 and 4.15-rc1? > > > > >=20 > > > > > Yes. > > > >=20 > > > > Hm, as far as I see, the only significant difference is the commit > > > > 20e3f985bb875fea4f86b04eba4b6cc29bfd6b71 > > > > ALSA: pcm: update tstamp only if audio_tstamp changed > > > > =20 > > > > Another change d6c0615f510bc1ee26cfb2b9a3343ac99b9c46fb > > > > ALSA: hda - Fix yet remaining issue with vmaster 0dB > > > > initialization > > > > is basically for fixing a previous wrong fix, and it should influen= ce > > > > on all use cases, not only for a specific application. > > >=20 > > > Happened again, this time on -rc3. It is more than "audio is silent" > > > -- apps behave strangely. Let me test with > > > 20e3f985bb875fea4f86b04eba4b6cc29bfd6b71 reverted. > > >=20 > > > Hmm. This is 4th regression this release cycle :-(. > >=20 > >=20 > > Today I jumped to 4.15-rc4 from 4.14-rc6, and have noticed some oddities > > with audio in youtube under firefox which I never experienced before. > >=20 > > If I pause the playback, the audio seems to infinitely loop on whatever > > is in the dma buffer. Resuming playback works but now the expected > > audio has repeated pops and clicks mixed in with it. > >=20 > > Even closing firefox doesn't seem to stop the looping buffer... > >=20 > > Machine is an x61s 1.8ghz thinkpad, x86_64, debian stretch, .config att= ached. > >=20 > > This for me is a 4.15 blocker, and I presume it's related to Pavel's > > experience as the x60 isn't much different AFAIK. > >=20 >=20 > Just reproduced this, it seems to be trivial to repro and doesn't > actually require pausing or anything. Simply watching a youtube video > causes the audio to get messed up after a short period. Hmm. Yes, I do experience something similar, but that has been there for long time now. Audio does not work with chromium (looping weirdly) for first few minutes after boot. Then I restart chromium and it starts to work ok...=20 Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --82I3+IH0IqGh5yIs Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlpAzjwACgkQMOfwapXb+vKmfwCfca+srvNukqPOHWHUMOx1w20w UwEAoJYY0zqr1zVOTeJD6TsTqvLcPBw1 =wzjE -----END PGP SIGNATURE----- --82I3+IH0IqGh5yIs--