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[Bug 1441852] Re: [HP Spectre x360 - 13-4010ca] Audio broken, broadwell-U audio controller


I just updated to the F25 version BIOS, reverted back to the initial GRUB config (with GRUB_CMDLINE_LINUX_DEFAULT="quiet splash") and booted two times: no improvement, the bug is still here (no sound).

Reconfiguring GRUB to use the sound card in legacy (HDA) mode (with
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor
acpi_osi='!Windows 2013' acpi_osi='!Windows 2012'") still works.

Same as the others, the command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
Returns: /dev/mem: Operation not permitted

Installing libsmbios and using the command: sudo getSystemId
Libsmbios version:      2.2.28
Product Name:           HP Spectre x360 Convertible 13
Vendor:                 Hewlett-Packard
BIOS Version:           F.25
System ID:              Could not determine System ID.

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  [HP Spectre x360 - 13-4010ca] Audio broken, broadwell-U audio

Status in Linux:
Status in linux package in Ubuntu:
Status in linux package in Fedora:

Bug description:
  On ubuntu trusty, Audio driver on HP Spectre x360 doesn't work.

  May be related to the bug found on the 2015 XPS 13.

  On the kernel 4.0-rc4+ given as solution for the bug found on the XPS 13, the
  dmesg -t | egrep "(audio|snd|INT3438)" command return:

  dmar: ACPI device "INT3438:00" under DMAR at fed91000 as 00:13.0
  snd_hda_intel 0000:00:03.0: enabling device (0000 -> 0002)
  sst-acpi INT3438:00: DesignWare DMA Controller, 8 channels
  haswell-pcm-audio haswell-pcm-audio: FW loaded, mailbox readback FW info: type 01, - version: 00.00, build 77, source commit id: 876ac6906f31a43b6772b23c7c983ce9dcb18a19
  broadwell-audio broadwell-audio: ASoC: CODEC DAI rt286-aif1 not registered
  ApportVersion: 2.14.1-0ubuntu3.8
  Architecture: amd64
   /dev/snd/controlC0:  isatis     1479 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=1e13c664-5747-48ed-942c-18c0610b50dd
  InstallationDate: Installed on 2015-04-01 (12 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: Hewlett-Packard HP Spectre x360 Convertible 13
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-34-generic.efi.signed root=UUID=70117e8f-97a5-40f7-90fd-aa25fdba1bba ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.16.0-34.45~14.04.1-generic 3.16.7-ckt8
   linux-restricted-modules-3.16.0-34-generic N/A
   linux-backports-modules-3.16.0-34-generic  N/A
   linux-firmware                             1.127.11
  Tags:  trusty
  Uname: Linux 3.16.0-34-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 02/05/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F.11
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 802D
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 58.25
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF.11:bd02/05/2015:svnHewlett-Packard:pnHPSpectrex360Convertible13:pvr:rvnHewlett-Packard:rn802D:rvr58.25:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Spectre x360 Convertible 13
  dmi.sys.vendor: Hewlett-Packard

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