5 minutes is about all I get as well. Volume also seems to be a factor.

-------- Original message --------
From: Rich Moffat <email address hidden> 
Date:  
To: <email address hidden> 
Subject: [Bug 1038479] Re: [Satellite L755, Conexant CX20585, Speaker,
 	Internal] fails after a while 
 
unfortunely for me it's just a temporary fix. I'm lucky if I go for 5
minutes with sound. And that's just if the pc is cold. It does also seem
to be affected by the type of sound (I know that sounds crazy). I was
watching one video of someone etching a circuit board. When he was
showing running it under the tap to rinse it off it will cut out within
5 seconds. I tried it repeatedly (20 times at least) with the same
results. All other sections I can get 1-5 minutes of sound before it
cuts out. Something about that frequency seems to make things work. Go
figure

-- 
You received this bug notification because you are subscribed to the bug
report.
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