This helps in my case, looks like the related bug is very similar https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1283168/comments/3
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1309894 Title: [Satellite C665, Conexant CX20585, Speaker, Internal] fails after a while Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: I Upgrade the OS from 12.04 to 14.04 and getting issue with sound as sometime it works and after a while sound is not coming to speaker as it is working fine with headphone. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic i686 ApportVersion: 2.14.1-0ubuntu3 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ritesh 1762 F.... pulseaudio ritesh 6359 F.... pulseaudio CurrentDesktop: Unity Date: Sat Apr 19 14:52:53 2014 InstallationDate: Installed on 2014-04-18 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_Card: Built-in Audio - HDA Intel MID Symptom_Jack: Speaker, Internal Symptom_Type: Sound works for a while, then breaks Title: [Satellite C665, Conexant CX20585, Speaker, Internal] fails after a while UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/09/2011 dmi.bios.vendor: INSYDE dmi.bios.version: 2.10 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Portable PC dmi.board.vendor: TOSHIBA dmi.board.version: Base Board Version dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Chassis Manufacturer dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnINSYDE:bvr2.10:bd11/09/2011:svnTOSHIBA:pnSatelliteC665:pvrPSC14G-01900V:rvnTOSHIBA:rnPortablePC:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion: dmi.product.name: Satellite C665 dmi.product.version: PSC14G-01900V dmi.sys.vendor: TOSHIBA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1309894/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp