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 06:28:24 +0200 Message-ID: References: <1902192.Ae1uPbIBnJ@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: <1902192.Ae1uPbIBnJ@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 Wed, 20 May 2015 16:31:55 +0200, Martin Steigerwald wrote: >=20 > Hello! >=20 > On ThinkPad T520 (Intel Sandybridge) with 4.14-rc4 + two BTRFS patche= s and=20 > one Intel P-State debug patch I have no sound output on internal Inte= l HD=20 > audio codec. >=20 > According to ThinkPad T520 LED with striked-through speaker the loud = speaker=20 > is in disabled state. Also KDE=C2=B4s Phonon says a soundcard is miss= ing. In=20 > alsa-mixer I see nothing as MM for muted. If I press the key next to = the LED=20 > I get a notification on the desktop that loud speaker has been enable= d /=20 > disabled, but the LED still is on for it being disabled. >=20 > I do not hear anything in Amarok or with aplay. alsa-mixer sound volu= mes are=20 > 100 for master and PCM. I also tried with disabling "Auto-Mute Mod", = but=20 > still no sound. > =20 > When I reboot and in BIOS or GRUB press the key then the LED toggles = state. >=20 > When I reboot into Linux 4.0.1 sound is working fine and loud speaker= =20 > disabled LED is toggled off, so I bet this is a regression 4.1-rc4 co= mpared=20 > to 4.0.1. Please run alsa-info.sh at both working and non-working cases (with old and new kernels), and attach the outputs. Run the script with --no-upload option. Also, such a problem is rather the device permissions problem. Check the device permissions of /dev/snd/* files (also check getfacl /dev/snd/*, too). Takashi