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[lasha <lasha.kitia@xxxxxxxxx>]

That fixed my problem for the same laptop but I have to apply force-
reload after every reboot. how can I fix this? thank you

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https://bugs.launchpad.net/bugs/1532539

Title:
  No Sound HP Probook 440 G3 (Intel Skylake, Conexant CX20724)

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  This is similar with #1525554 but for a different laptop model. As in
  #1525554 I have no sound at all, audio card is not detected (apart
  from HDMI interfaces).

  In this case it also works the workaround that was proposed at
  #1525554:

  * Execute alsa_setup.sh from http://www.stchman.com/alsa_update.html which creates a new "Dummy Output" that does not work
  * Run "sudo alsa force-reload" 3 times with ~15 sec
  * Tadam! Sound is working

  I will shortly post extra logs after the workaround.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: alsa-base 1.0.25+dfsg-0ubuntu5
  ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
  Uname: Linux 4.2.0-23-generic x86_64
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  user       1327 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Sun Jan 10 13:57:52 2016
  InstallationDate: Installed on 2016-01-10 (0 days ago)
  InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Title: PCI/internal sound card not detected
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/18/2015
  dmi.bios.vendor: HP
  dmi.bios.version: N78 Ver. 01.06
  dmi.board.name: 8100
  dmi.board.vendor: HP
  dmi.board.version: KBC Version 16.20
  dmi.chassis.asset.tag: 5CD5459DBN
  dmi.chassis.type: 10
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrN78Ver.01.06:bd12/18/2015:svnHP:pnHPProBook440G3:pvr:rvnHP:rn8100:rvrKBCVersion16.20:cvnHP:ct10:cvr:
  dmi.product.name: HP ProBook 440 G3
  dmi.sys.vendor: HP
  --- 
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  user       1328 F.... pulseaudio
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 15.10
  InstallationDate: Installed on 2016-01-10 (0 days ago)
  InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
  Package: alsa-driver (not installed)
  ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
  Tags:  wily
  Uname: Linux 4.2.0-23-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 12/18/2015
  dmi.bios.vendor: HP
  dmi.bios.version: N78 Ver. 01.06
  dmi.board.name: 8100
  dmi.board.vendor: HP
  dmi.board.version: KBC Version 16.20
  dmi.chassis.asset.tag: 5CD5459DBN
  dmi.chassis.type: 10
  dmi.chassis.vendor: HP
  dmi.modalias: dmi:bvnHP:bvrN78Ver.01.06:bd12/18/2015:svnHP:pnHPProBook440G3:pvr:rvnHP:rn8100:rvrKBCVersion16.20:cvnHP:ct10:cvr:
  dmi.product.name: HP ProBook 440 G3
  dmi.sys.vendor: HP

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