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[Nicolae Istratii <tallman9@xxxxxxxxx>]

Upgraded to the latest BIOS, no magic happened. Still the same, no sound card was detected.
The output from sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
F.2C
10/20/2015


** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

** Tags removed: bios-outdated-f.2c
** Tags added: bios-f.2c

** Summary changed:

- No sound card detected
+ [HP spectre x360] No sound card detected

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https://bugs.launchpad.net/bugs/1510789

Title:
  [HP spectre x360] No sound card detected

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  lsb_release -rd
  Description:	Ubuntu 15.10
  Release:	15.10

  apt-cache policy linux-image-generic         
  linux-image-generic:
    Installed: 4.2.0.17.19
    Candidate: 4.2.0.17.19
    Version table:
   *** 4.2.0.17.19 0
          500 http://mirror.as43289.net/ubuntu/ wily-proposed/main amd64 Packages
          100 /var/lib/dpkg/status
       4.2.0.16.18 0
          500 http://mirror.as43289.net/ubuntu/ wily/main amd64 Packages

  I expect the sound card to be detected without additional modification of boot options.
  The sound card is not detected unless the following line in /etc/default/grub is adjusted to look so
  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi='!Windows 2013' acpi_osi='!Windows 2012'"
  and the system is rebooted twice after booting to windows.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-17-generic 4.2.0-17.21
  ProcVersionSignature: Ubuntu 4.2.0-17.21-generic 4.2.3
  Uname: Linux 4.2.0-17-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  yalok      2422 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Oct 28 07:05:49 2015
  HibernationDevice: RESUME=UUID=4b24424f-03e9-4f7f-8670-e714d50eae33
  InstallationDate: Installed on 2015-06-20 (129 days ago)
  InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Hewlett-Packard HP Spectre x360 Convertible 13
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-17-generic.efi.signed root=UUID=5e212365-e902-4afa-bf5f-b0adb8e59763 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-17-generic N/A
   linux-backports-modules-4.2.0-17-generic  N/A
   linux-firmware                            1.149.1
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/19/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F.25
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 802D
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 58.39
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF.25:bd08/19/2015:svnHewlett-Packard:pnHPSpectrex360Convertible13:pvr:rvnHewlett-Packard:rn802D:rvr58.39:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Spectre x360 Convertible 13
  dmi.sys.vendor: Hewlett-Packard

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