madbiologist: I'm currently running 4.4.0-38-generic and while sound is working, it is not as loud an clear as in Windows, on the same device (I dual boot). Do you think that would be fixed with kernel 4.9 ? I'm not sure to understand this "two speaker outputs" story. Does that mean that the laptop has two physical sets of speakers but only one is activated on current kernel ? That would explain the low volume.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1505067 Title: [HP Spectre x360 - 13-4001nf] Audio broken, broadwell-U audio controller Status in linux package in Ubuntu: Triaged Bug description: On Ubuntu vivid (15.04), Audio driver on HP Spectre x360 doesn't work. 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 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1505067/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
