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[Raymond <1450207@xxxxxxxxxxxxxxxxxx>]

control.6 {
		iface MIXER
		name 'Capture Source'
		value 'Headphone Mic'
		comment {
			access 'read write'
			type ENUMERATED
			count 1
			item.0 'Headphone Mic'
			item.1 'Headset Mic'
			item.2 'Internal Mic'
		}
	}


the capture source seem determine the type of combo jack plugged when codec cannot differentiate headset headphone or Mic

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https://bugs.launchpad.net/bugs/1450207

Title:
  [XPS13 9333, Intel Haswell HDMI, Digital Out, HDMI] volume slider
  problem

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  When starting Ubuntu from boot-up, sometimes the F11 and F12 keys have
  no effect on the sound volume, even though it can be controlled by the
  slider in the Sound window.

  This can often be restored by re-booting the OS.

  When the F11 and F12 keys are working as expected, a "pop" is heard in
  the speakers indicating a change of volume level. The output volume
  slider in the Sound window has the same effect. However, when
  adjusting the volume using the slider in the pull-down menu at the top
  right of the desktop, the sound level is adjusted as seen by the
  slider moving in the Sound window. However, this produces no audible
  "pop" as occurs when the volume level is adjusted by other methods.

  Ubuntu 15.04

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  david      1590 F.... pulseaudio
   /dev/snd/controlC1:  david      1590 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Apr 29 22:13:15 2015
  InstallationDate: Installed on 2015-04-23 (6 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_Card: Built-in Audio - HDA Intel HDMI
  Symptom_Jack: Digital Out, HDMI
  Symptom_Type: Volume slider, or mixer problems
  Title: [XPS13 9333, Intel Haswell HDMI, Digital Out, HDMI] volume slider problem
  UpgradeStatus: Upgraded to vivid on 2015-04-23 (6 days ago)
  dmi.bios.date: 09/11/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A05
  dmi.board.name: 0D13CR
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA05:bd09/11/2014:svnDellInc.:pnXPS139333:pvr:rvnDellInc.:rn0D13CR:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: XPS13 9333
  dmi.sys.vendor: Dell Inc.

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