Upgrading to Ubuntu 18.10 didn't seem to help. Using a different set of headphones also didn't work. Other audio sources work fine. Unplugging the headphones from the line out port in the back panel of the computer and plugging it in the front headphones port stops the crackling and the flickering in the settings. Headphones work fine now.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1800899 Title: Line out and headphones audio output keep swithing causing crackles in sound Status in alsa-driver package in Ubuntu: Incomplete 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1800899/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
