From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Newbury Subject: Re: No speaker output with kernel 3.15 and later Date: Mon, 07 Jul 2014 16:34:10 +0100 Message-ID: <1404747250.1983.1.camel@snewbury.org.uk> References: <1404050996.31259.2.camel@snewbury.org.uk> <1404215372.2290.0.camel@snewbury.org.uk> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7826502026330152208==" Return-path: Received: from know-smtprelay-omc-10.server.virginmedia.net (know-smtprelay-omc-10.server.virginmedia.net [80.0.253.74]) by alsa0.perex.cz (Postfix) with ESMTP id 3F9742652AD for ; Mon, 7 Jul 2014 17:34:22 +0200 (CEST) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Takashi Iwai Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org --===============7826502026330152208== Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-M/diKV28UMjbAul9ijbg" --=-M/diKV28UMjbAul9ijbg Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2014-07-01 at 13:54 +0200, Takashi Iwai wrote: > At Tue, 01 Jul 2014 12:49:32 +0100, > Steven Newbury wrote: > > On Mon, 2014-06-30 at 11:24 +0200, Takashi Iwai wrote: > > > At Sun, 29 Jun 2014 15:09:56 +0100, > > > Steven Newbury wrote: > > > > I sent > > > > Takashi an email mentioning this regression a month ago, and > > > > it's > > > > taken me this long to send this email... :-$ > > > > Since updating to > > > > kernel versions >=3D3.15 I've had no audio from my > > > > laptop speakers. > > > > Earlier versions worked fine. > > > > It's a CLEVO W270EUQ laptop. The > > > > output mixer device is showing up, > > > > but no sound comes out at any > > > > volume level. > > > > As requested I've attached compressed alsa-info.sh > > > > output for both the > > > > working and non-working cases. > > > > I'm perfectly > > > > willing to test patches etc. > > > Hm, I see no significant difference between 3.14 and 3.15=20 > > > alsa-info.sh > > > outputs, and there's been very little change for VIA codecs=20 > > > between > > > these versions. So, in short, I have no idea what went wrong. > > > Could you double-check whether it's really a kernel issue? > > > That is, switch between 3.14 and 3.15 and confirm the problem=20 > > > happens > > > only with 3.15. Also, for testing the sound, try like > > > % aplay -Dplughw -vv foo.wav > > Checked again. > > 3.16-rc2: silence > > 3.14.3: works fine > =20 > Then I'd suggest to bisect between 3.14 and 3.15. > =20 > =20 Somewhat surprisingly I ended up here: dcb32ecd9a533f47ab652c5c5680bc50a7a822cd is the first bad commit commit dcb32ecd9a533f47ab652c5c5680bc50a7a822cd Author: Anssi Hannula Date: Tue Apr 8 12:36:42 2014 +0300 ALSA: hda - Do not assign streams in reverse order =20 Currently stream numbers are assigned in reverse order. =20 Unfortunately commit 7546abfb8e1f9933b5 ("ALSA: hda - Increment default stream numbers for AMD HDMI controllers") assumed this was not the case (specifically, it had the "old cards had single device only" =3D> "extra unused stream numbers do not matter" assumption), causing non-working audio regressions for AMD Radeon HDMI users. =20 Change the stream numbers to be assigned in forward order. =20 The benefit is that regular audio playback will still work even if the assumed stream count is too high, downside is that a too high stream count may remain hidden. =20 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=3D77002 Reported-by: Christian G=C3=BCdel Signed-off-by: Anssi Hannula Tested-by: Christian G=C3=BCdel # 3.14 Cc: Alex Deucher Signed-off-by: Takashi Iwai :040000 040000 6ed3a982a9600333b07a42169db5173fa75b8618 b7ff28d00007f988221= ba58c9d3f501fdb3a7583 M sound --=-M/diKV28UMjbAul9ijbg Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlO6vfIACgkQGcb56gMuC61Q8ACfaO5mt9czlHlyPtEJArLEO66x xm4AoLqEIswTwsRWUCSt0Lq541IvPWlC =DZkB -----END PGP SIGNATURE----- --=-M/diKV28UMjbAul9ijbg-- --===============7826502026330152208== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline --===============7826502026330152208==--