Public bug reported: this happened after I upgraded to ubuntu 16.04
ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19 Uname: Linux 4.4.0-38-generic i686 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: joe 1731 F.... pulseaudio CurrentDesktop: X-Cinnamon Date: Fri Sep 30 20:51:14 2016 InstallationDate: Installed on 2015-10-02 (364 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta i386 (20150805) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed Symptom_Card: Built-in Audio - HDA Intel Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: joe 1731 F.... pulseaudio Symptom_Type: No sound at all Title: [HDA-Intel - HDA Intel, playback] No sound at all UpgradeStatus: Upgraded to xenial on 2016-09-19 (12 days ago) dmi.bios.date: 07/30/2010 dmi.bios.vendor: TOSHIBA dmi.bios.version: V1.60 dmi.board.name: PAV10 DDR2 dmi.board.vendor: TOSHIBA dmi.board.version: 1.00 dmi.chassis.asset.tag: * dmi.chassis.type: 10 dmi.chassis.vendor: TOSHIBA dmi.chassis.version: N/A dmi.modalias: dmi:bvnTOSHIBA:bvrV1.60:bd07/30/2010:svnTOSHIBA:pnTOSHIBANB255:pvrPLL2PU-00901L:rvnTOSHIBA:rnPAV10DDR2:rvr1.00:cvnTOSHIBA:ct10:cvrN/A: dmi.product.name: TOSHIBA NB255 dmi.product.version: PLL2PU-00901L dmi.sys.vendor: TOSHIBA ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1629498 Title: [HDA-Intel - HDA Intel, playback] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1629498/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs