Comment 0 for bug 1505067

On Ubuntu vivid (15.04), Audio driver on HP Spectre x360 doesn't work.

This bug has been reported for the outdated (F12) BIOS version: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1441852
 and it is also valid with the latest BIOS update (F25) and Ubuntu kernel 3.19.0-30.

As a workaround, GRUB can be reconfigured to use the sound card in legacy (HDA) mode by:
1) Editing /etc/default/grub
2) replacing GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" by GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor acpi_osi='!Windows 2013' acpi_osi='!Windows 2012'"
3) Rebooting TWO times

Yet, it would be nice to have the sound card working in i2c mode.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-30-generic 3.19.0-30.34
ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6
Uname: Linux 3.19.0-30-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: yom 1908 F.... pulseaudio
 /dev/snd/controlC1: yom 1908 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Oct 12 10:49:27 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-07-17 (86 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
MachineType: Hewlett-Packard HP Spectre x360 Convertible 13
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=UUID=fabc8684-f690-4eeb-ad0a-ec14846f7de6 ro quiet splash acpi_backlight=vendor "acpi_osi=!Windows 2013" "acpi_osi=!Windows 2012" vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-30-generic N/A
 linux-backports-modules-3.19.0-30-generic N/A
 linux-firmware 1.143.3
SourcePackage: linux
UpgradeStatus: Upgraded to vivid on 2015-07-24 (79 days ago)
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