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[Raymond <1078704@xxxxxxxxxxxxxxxxxx>]

Table 40. Bit Mnemonic JS0 Interrupt Function JS1 TMR  JS0 TMR JS1 MD
JS0 MD JS1 ST  JS0 ST JS1 INT JS0 INT 0x0000

JS1INT  JS0ST  JS1ST  JS0MD  JS1MD  JS0TMR  JS1TMR  JS0EQB  JS1EQB  JSMT
[2:0]

JS0INT  
This bit indicates that Pin JS0 has generated an interrupt. This bit remains set until the software services the JS0 interrupt, that is, JS0 ISR should clear this bit by writing a 0 to it. The interrupt to the system is an OR combination of this bit and JS1INT. The actual interrupt implementation is selected by the INTS bit (Register 0x76). It is also possible to generate a software system interrupt by writing a 1 to this bit.  

Js1 Interrupt 
This bit indicates that Pin JS1 has generated an interrupt. This bit remains set until the software services the JS1 interrupt, that is, JS1 ISR should clear this bit by writing a 0 to it. See the JS0INT description for details.  

JS0 State 
This bit always reports the logic state of the JS0 pin.  

JS1 State 
This bit always reports the logic state of the JS1 pin.  

JS0 Mode 
This bit selects the operation mode for the JS0 pin. 0 = Jack sense mode (default). 1 = Interrupt mode.  

JS1 Mode 
This bit selects the operation mode for the JS1 pin. 0 = Jack sense mode (default). 1 = Interrupt mode.  

JS0 Timer Enable
If this bit is set to 1, JS0 must be high for >278 ms to be recognized.  

JS1 Timer Enable
If this bit is set to 1, JS1 must be high for >278 ms to be recognized.  


 JS0 EQ Bypass Enable 
This bit enables JS0 to control the EQ bypass. When this bit is set to 1, JS0 = 1 causes the EQ to be bypassed. 
 
JS1 EQ Bypass Enable 
This bit enables JS1 to control the EQ bypass. When this bit is set to 1, JS1 = 1 causes the EQ to be bypassed.  

JS Mute Enable Selector

These three bits select and enable the jack sense muting action (see
Table 41

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https://bugs.launchpad.net/bugs/1078704

Title:
  headphone jack sense not enabled

Status in ALSA driver:
  Confirmed
Status in alsa-driver package in Ubuntu:
  New
Status in pulseaudio package in Ubuntu:
  New

Bug description:
  bug is present in Ubuntu 12.04 and Xubuntu 12.04 and Lubuntu 12.04.1 64bit 
  alsa-base 1.0.25+dfsg-0ubuntu1 on this machine (64 bit)
  I except Ubuntu to automatically sense the presence of headphones and disable the speakers.  This is not the case, the speakers and headphones play simultaneously.  I must install gnome-alsamixer to manually set the jack sense.  Alsa should have this enabled as the default setting.  This seems as though it should be a very easy bug to fix, though.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
  Uname: Linux 3.2.0-32-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu14
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  love       1330 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'nForce3'/'NVidia nForce3 with AD1981B at irq 21'
     Mixer name	: 'Analog Devices AD1981B'
     Components	: 'AC97a:41445374'
     Controls      : 33
     Simple ctrls  : 22
  Date: Wed Nov 14 06:42:21 2012
  InstallationMedia: Lubuntu 12.04 "Precise Pangolin" - Release amd64 (20120423)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/30/2004
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.11
  dmi.board.name: 08A0
  dmi.board.vendor: Compal
  dmi.board.version: 32.22
  dmi.chassis.type: 10
  dmi.chassis.vendor: Compal
  dmi.modalias: dmi:bvnHewlett-Packard:bvrF.11:bd04/30/2004:svnHewlett-Packard:pnPresarioR3200(PF153UA#ABA):pvrF.11:rvnCompal:rn08A0:rvr32.22:cvnCompal:ct10:cvr:
  dmi.product.name: Presario R3200 (PF153UA#ABA)
  dmi.product.version: F.11
  dmi.sys.vendor: Hewlett-Packard

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