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[Bug 1550765] Re: Headset doesn't work for HP EliteBook 755 G2
I've now tested the kernel fix with my hardware and confirmed it works.
I compiled Xenial's 4.4.0-14-generic kernel after applying the patch, by
following https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel . With the
patched kernel, my headset's headphones and microphone work and the
background noise isn't present, without needing an /etc/modprobe.d/snd-
hda-intel.conf for module option fix and without needing to disable
I had to slightly adjust Takashi Iwai's patch, with regards to line
numbers and surrounding context lines, to get it to successfully apply,
and I've attached this.
** Patch added: "patch_realtek.c.patch"
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Headset doesn't work for HP EliteBook 755 G2
Status in linux package in Ubuntu:
My laptop is an HP EliteBook 755 G2 (from mid 2015) that has a
combined headset (headphone + mic) jack that doesn't work. The
speakers work fine and they mute when a headset is plugged in but the
headphones don't work.
This problem exists in Xenial Xerus and in 15.04 (I use the MATE
flavor of both).
A fix in the kernel has recently been made. I've already reported the
problem to the ALSA developers  and Takashi Iwai has already
committed a fix which is currently queued for inclusion in the
I'd like to ask that this fix be included in Xenial Xerus's kernel.
If it's helpful, see  for more details and links to other people
having the same problem.
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-8-generic 4.4.0-8.23
ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2
Uname: Linux 4.4.0-8-generic x86_64
NonfreeKernelModules: wl fglrx
USER PID ACCESS COMMAND
/dev/snd/pcmC1D0p: d 1192 F...m pulseaudio
/dev/snd/controlC1: d 1192 F.... pulseaudio
d 2874 F.... alsamixer
/dev/snd/controlC0: d 1192 F.... pulseaudio
Date: Sat Feb 27 10:42:07 2016
InstallationDate: Installed on 2016-02-20 (7 days ago)
InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160219)
MachineType: Hewlett-Packard HP EliteBook 755 G2
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-8-generic root=/dev/mapper/VGany-U1604a ro intremap=off priority=low
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.version: M84 Ver. 01.10
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.version: KBC Version 63.16
dmi.product.name: HP EliteBook 755 G2
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