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[vbspam <vbspam@xxxxxxxxxx>]

Hi guys!

I have this problem long time. The overheating may not explain the 
issue, however the issue itself is closely connected to the power 
management of the hardware.

I investigated the problem and it is basically caused by the decision of 
the HW to switch the mode of the circuit (programmable HDA switch). Of 
course as the HW is programable, there is something (I would call it for 
now codec) that causes the HW beahavior.

If the driver for the behavior is the increased temperature (and I 
believe it is), is secondary.

The problem is that the 'codec' together with the Toshiba Satellite 
L750-129 HW and others (even other brands) is doing bad job.

I tried to investigate the problem in order to fix it, however I found I 
lack of knowledge about complex HDA firmware programing so I withdraw 
the idea to fix it.

VB

On 08/26/2015 12:37 AM, Anton wrote:
> Does not look like a hardware issue with my Toshiba Satellite L750-129. I have Windows 7 in dual-boot with OpenSuSe 13.2 and speakers do ALWAYS work on Windows 7, and do not work on OpenSuSe. Claims about overheating do not explain this.
> Moreover my colleague has Satellite L755 with same Win7/OpenSuSe13.2 configuration and experiences exactly same problems.
>

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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

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