From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: [REGRESSION] 4.1-rc4: Sound muted after boot Date: Thu, 21 May 2015 11:19:02 +0200 Message-ID: References: <1902192.Ae1uPbIBnJ@merkaba> <2273195.tahhRQoM4G@merkaba> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <2273195.tahhRQoM4G@merkaba> Sender: linux-kernel-owner@vger.kernel.org To: Martin Steigerwald Cc: linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org At Thu, 21 May 2015 11:08:36 +0200, Martin Steigerwald wrote: >=20 > Am Donnerstag, 21. Mai 2015, 06:28:24 schrieb Takashi Iwai: > > At Wed, 20 May 2015 16:31:55 +0200, > >=20 > > Martin Steigerwald wrote: > > > Hello! > > >=20 > > > On ThinkPad T520 (Intel Sandybridge) with 4.14-rc4 + two BTRFS pa= tches > > > and one Intel P-State debug patch I have no sound output on inter= nal > > > Intel HD audio codec. > > >=20 > > > According to ThinkPad T520 LED with striked-through speaker the l= oud > > > speaker is in disabled state. Also KDE=C2=B4s Phonon says a sound= card is > > > missing. In alsa-mixer I see nothing as MM for muted. If I press = the > > > key next to the LED I get a notification on the desktop that loud > > > speaker has been enabled / disabled, but the LED still is on for = it > > > being disabled. >=20 > One clarification: Phonon still seems to see a sound card=E2=80=A6 bu= t it reports a=20 > change to the list of soundcards. >=20 > And another observation: The speaker disable LED is switched on KDE/P= lasma=20 > 4.14.2 session startup, I just rebooted to 4.1-rc4 after I gathered d= ebug=20 > output of 4.0.1, and there on boot the speaker disable LED was off du= ring=20 > boot. >=20 > So there seems Phonon is confused about some difference in ALSA betwe= en these=20 > two kernel versions and probably doesn=C2=B4t fully find the sound ca= rd or mutes=20 > it, but on the other hand I can=C2=B4t see it in alsa-mixer as muted. >=20 > And alsa-mixer still finds the internal sound. >=20 > Also this does not happen for external USB JBL Pebbles speakers (exce= llent=20 > ones!) at home, sound just works with 4.1-rc4 with these. >=20 > I am now on 4.1-rc4 again so could try to dig out more what KDE Phono= n sees=20 > as a difference. In trainings breaks. Now need to continue with the c= ourse I=20 > hold. >=20 > Phonon runs without PulseAudio here, cause PulseAudio creates additio= nal=20 > issues with sound. Okay, this is the message I get: >=20 > KDE hat festgestellt, dass eines oder mehrere interne Ger=C3=A4te ent= fernt=20 > wurden. > Soll KDE die Informationen zu diesen Ger=C3=A4ten dauerhaft l=C3=B6sc= hen? > Dies ist die Liste der Ger=C3=A4te, die entfernt werden k=C3=B6nnen: > Aufnahme: HDA Intel PCH (CX20590 Analog) > Wiedergabe: HDA Intel PCH (CX20590 Analog) >=20 > Which means: KDE has found that one or more internal devices were rem= oved. >=20 > So it seems KDE really does not find the sound card anymore, while al= sa-mixer=20 > finds it, yet, also aplay does not produce any sound. >=20 > But then I still have a "HDA Intel PCH (CX20590 Analog)" in systemset= tings=20 > for Phonon. There is one greyed out and another one which is not grey= ed out,=20 > but does not produce any sound on clicking the test button either. All of these sound like a problem with Phonon. There is no change in the interface and device names of your board between 4.0 and 4.1 in the kernel level. You can compare alsa-info.sh outputs. Takashi