There might be some old config setting that's wrong as a result of the upgrades.
Please try removing your old personal audio settings by running: mv ~/.config/pulse oldconfigpulse ** Summary changed: - Gnome Shell always started muted on Disco + Sound is muted by default after upgrading 18.04->18.10->19.04 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1821904 Title: Sound is muted by default after upgrading 18.04->18.10->19.04 Status in pulseaudio package in Ubuntu: Incomplete Bug description: On Disco, Gnome Shell always starts muted. --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu23 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: joe 4766 F.... pulseaudio /dev/snd/pcmC0D0p: joe 4766 F...m pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 19.04 InstallationDate: Installed on 2018-09-15 (193 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair Package: pulseaudio 1:12.2-2ubuntu1 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 5.0.0-7.8-generic 5.0.0 Tags: disco wayland-session Uname: Linux 5.0.0-7-generic x86_64 UpgradeStatus: Upgraded to disco on 2019-03-20 (7 days ago) UserGroups: adm cdrom dip input kvm libvirt lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 02/14/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.8.1 dmi.board.name: 0F6P3V dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.8.1:bd02/14/2019:svnDellInc.:pnXPS139370:pvr:rvnDellInc.:rn0F6P3V:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9370 dmi.product.sku: 07E6 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1821904/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp