We configure PulseAudio by default to automatically choose hotplugged devices so it might be thinking booting with USB counts as hotplugging. To avoid this you should just be able to comment out:
load-module module-switch-on-connect from /etc/pulse/default.pa ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1877194 Title: Selected audio output device not persistent between reboots (Resets to USB-device) Status in pulseaudio package in Ubuntu: Incomplete Bug description: Similar to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1847570 Only difference is that it does not reset to HDMI output, but to one of my USB-outputs. It does not respect the change I made after reboot. In short: 1. Boot system 2. "Analogue Output - RODE NT-USB" is selected by default. I want to use "Line Out - Built-in Audio", which I choose. 3. Reboot. 4 Output device is now back to "Analogue Output - RODE NT-USB". ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: pulseaudio 1:13.99.1-1ubuntu3 ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30 Uname: Linux 5.4.0-29-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: marcus 1604 F.... pulseaudio /dev/snd/controlC0: marcus 1604 F.... pulseaudio /dev/snd/controlC1: marcus 1604 F.... pulseaudio /dev/snd/pcmC1D0c: marcus 1604 F...m pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Wed May 6 23:40:08 2020 InstallationDate: Installed on 2020-05-06 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/27/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3703 dmi.board.asset.tag: Default string dmi.board.name: MAXIMUS VIII HERO dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3703:bd12/27/2017:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnMAXIMUSVIIIHERO:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1877194/+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