I got exactly the same problem with my Toshiba Satelite L750, recently. I have Ubuntu 12.04.2 with kernel 3.2.0-52-generic. I suspect it must have to do with updates around 2013-08-09. Before that the speaker worked reliably. I tried to revert updates or downgrade to older kernel or newer one (3.8), but nothing helped. I observed all the effects others have described: Waking up from suspension turns speakers on again. Headphones always work. Alternative USB sound card always works. Windows always works. Speakers are disabled only when making noise, not in phases of silence. I also suspected it is promoted by overdriven sounds. The problem exists for all users of the machine. It appears both on KDE and GNOME and without any desktop in the Linux konsole.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1038479 Title: [Satellite L755, Conexant CX20585, Speaker, Internal] fails after a while Status in “alsa-driver” package in Ubuntu: Confirmed Bug description: Restart will fix the issue, but sound always quits from internal speaker. Headphones work always. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24 Uname: Linux 3.2.0-29-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu12 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bernie 1838 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xc0600000 irq 44' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:14f15069,1179fc50,00100302 HDA:80862805,1179fc50,00100000' Controls : 24 Simple ctrls : 11 Date: Sat Aug 18 11:18:34 2012 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) PackageArchitecture: all ProcEnviron: LANGUAGE=en_US:en PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Speaker, Internal Symptom_Type: Sound works for a while, then breaks Title: [Satellite L755, Conexant CX20585, Speaker, Internal] fails after a while UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/13/2011 dmi.bios.vendor: INSYDE dmi.bios.version: 2.20 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Base Board Product Name dmi.board.vendor: Intel Corp. dmi.board.version: Base Board Version dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: OEM Chassis Manufacturer dmi.chassis.version: OEM Chassis Version dmi.modalias: dmi:bvnINSYDE:bvr2.20:bd07/13/2011:svnTOSHIBA:pnSatelliteL755:pvrPSK1WU-05N004:rvnIntelCorp.:rnBaseBoardProductName:rvrBaseBoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion: dmi.product.name: Satellite L755 dmi.product.version: PSK1WU-05N004 dmi.sys.vendor: TOSHIBA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1038479/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
