I have been a long-term Ubuntu user (since 10.04) and take pride in having fixed all problems on my own thanks to the excellent documentation, but this time I am utterly stumped and have run out of ideas (hence this report).
With my headphones jacked in, the line out and headphones output options keep switching automatically, resulting in crackling (and broken audio). I have tried many solutions I found online but none of the suggested fixes work. I am attaching a video of what I see (note that this happens automatically, I don't click anywhere)
This is not a hardware issue (the headphones work fine on another machine running Ubuntu 16.04, and as far as I'm aware this problem only appeared after I upgraded from 16.04 to 18.04).
$ lsb_release -rd
Description: Ubuntu 18.04.1 LTS
Release: 18.04
I have uploaded two different videos showing what I see here:
https://youtu.be/S49cEC5DRsk
https://youtu.be/zSfi5ko5nBY
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jp 5422 F.... pulseaudio
/dev/snd/controlC1: jp 5422 F.... pulseaudio
/dev/snd/controlC2: jp 5422 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=84a04536-72b0-461c-99b3-6dd8190bd471
InstallationDate: Installed on 2016-05-12 (992 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IwConfig:
docker0 no wireless extensions.
lo no wireless extensions.
enp4s0 no wireless extensions.
MachineType: System manufacturer System Product Name
NonfreeKernelModules: nvidia_modeset nvidia
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-44-generic root=UUID=38883a30-ab46-453d-af78-cd67fe68236b ro quiet splash acpi=force
ProcVersionSignature: Ubuntu 4.15.0-44.47-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-44-generic N/A
linux-backports-modules-4.15.0-44-generic N/A
linux-firmware 1.173.3
RfKill:
Tags: bionic
Uname: Linux 4.15.0-44-generic x86_64
UpgradeStatus: Upgraded to bionic on 2018-08-23 (159 days ago)
UserGroups: adm cdrom dip docker lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 01/26/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0601
dmi.board.asset.tag: Default string
dmi.board.name: Z170-P D3
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0601:bd01/26/2016:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ170-PD3:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https:/
To change the source package that this bug is filed about visit https:/
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