Thanks.
It sounds like there is a bad connection in the port on the back panel.
That would explain both crackling and flickering settings. The
flickering would be Ubuntu quickly detecting spurious insertion/removal
or connection/disconnection of the headphones. So this sounds like a
hardware problem with that port.
** Package changed: alsa-driver (Ubuntu) => ubuntu
** Changed in: ubuntu
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/1800899
Title:
Line out and headphones audio output keep swithing causing crackles in
sound
Status in Ubuntu:
Invalid
Bug description:
There is an audio crackle every few seconds when I use headphones.
Under the sound tab in settings the "Line Out-Built-in Audio" device
flickers at the exact moment there is a crackle. By opening the
pavucontrol audio manager I can see the "Built-in Audio Analog Stereo"
output device port keeps switching to "Headphones (unplugged)" from
"Line Out(plugged in)" for an instance.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
Uname: Linux 4.15.0-38-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: george 10877 F.... pulseaudio
/dev/snd/controlC2: george 10877 F.... pulseaudio
/dev/snd/controlC0: george 10877 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Wed Oct 31 20:21:09 2018
InstallationDate: Installed on 2018-10-09 (21 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Green Line Out, Rear
Symptom_PulseAudioLog:
Οκτ 31 18:49:55 LinuxPC dbus-daemon[775]: [system] Activating via systemd:
service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service'
requested by ':1.38' (uid=1000 pid=1298 comm="/usr/bin/pulseaudio --start
--log-target=syslog " label="unconfined")
Οκτ 31 18:49:58 LinuxPC dbus-daemon[775]: [system] Activating via systemd:
service name='org.bluez' unit='dbus-org.bluez.service' requested by ':1.44'
(uid=1000 pid=1298 comm="/usr/bin/pulseaudio --start --log-target=syslog "
label="unconfined")
Οκτ 31 19:49:44 LinuxPC dbus-daemon[775]: [system] Activating via systemd:
service name='org.bluez' unit='dbus-org.bluez.service' requested by ':1.211'
(uid=1000 pid=10877 comm="/usr/bin/pulseaudio --start --log-target=syslog "
label="unconfined")
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [To be filled by O.E.M., Realtek ALC887-VD, Green Line Out, Rear]
Underruns, dropouts or crackling sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/23/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F4
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z170-HD3P-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF4:bd11/23/2015:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ170-HD3P-CF:rvrx.x:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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