apport information ** Tags added: apport-collected
** Description changed: There are two audio output sources on my laptop, one is the internal speakers and the second is via the DisplayPort. At random intervals during the day KDE / Plasma will start switching rapidly between the two, it was particularly apparent today and went on for some minutes. Both sets of speakers seem to test ok, audio out of all 4 speakers. When viewed in the Audio section of System Settings the two audio outputs can be seen rapidly flicking between the two. As always, happy to collect any more information ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: plasma-desktop 4:5.27.12-0ubuntu0.1 ProcVersionSignature: Ubuntu 6.11.0-28.28~24.04.1-generic 6.11.11 Uname: Linux 6.11.0-28-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.30.0-0ubuntu4.4 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: KDE Date: Thu Aug 28 10:27:50 2025 InstallationDate: Installed on 2024-12-13 (258 days ago) InstallationMedia: Ubuntu 22.04.5 LTS "Jammy Jellyfish" - Release amd64 (20240911) SourcePackage: plasma-desktop UpgradeStatus: Upgraded to noble on 2024-12-16 (255 days ago) + --- + ProblemType: Bug + ApportVersion: 2.30.0-0ubuntu4.4 + Architecture: amd64 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC2: owen 4422 F.... wireplumber + /dev/snd/controlC0: owen 4422 F.... wireplumber + /dev/snd/controlC1: owen 4422 F.... wireplumber + /dev/snd/seq: owen 4418 F.... pipewire + CasperMD5CheckResult: pass + CurrentDesktop: KDE + DistroRelease: Ubuntu 24.04 + InstallationDate: Installed on 2024-12-13 (259 days ago) + InstallationMedia: Ubuntu 22.04.5 LTS "Jammy Jellyfish" - Release amd64 (20240911) + MachineType: Dell Inc. Precision M4800 + NonfreeKernelModules: nvidia_modeset nvidia + Package: alsa-driver (not installed) + ProcVersionSignature: Ubuntu 6.11.0-28.28~24.04.1-generic 6.11.11 + PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. + Tags: noble + Uname: Linux 6.11.0-28-generic x86_64 + UpgradeStatus: Upgraded to noble on 2024-12-16 (256 days ago) + UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo + _MarkForUpload: True + dmi.bios.date: 06/13/2019 + dmi.bios.release: 65.26 + dmi.bios.vendor: Dell Inc. + dmi.bios.version: A26 + dmi.board.name: 0T3YTY + dmi.board.vendor: Dell Inc. + dmi.board.version: A00 + dmi.chassis.type: 9 + dmi.chassis.vendor: Dell Inc. + dmi.modalias: dmi:bvnDellInc.:bvrA26:bd06/13/2019:br65.26:svnDellInc.:pnPrecisionM4800:pvr00:rvnDellInc.:rn0T3YTY:rvrA00:cvnDellInc.:ct9:cvr:sku05CC: + dmi.product.name: Precision M4800 + dmi.product.sku: 05CC + dmi.product.version: 00 + dmi.sys.vendor: Dell Inc. ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/2121583/+attachment/5903439/+files/AlsaInfo.txt -- 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/2121583 Title: KDE / Plasma keeps changing speaker source Status in alsa-driver package in Ubuntu: Incomplete Bug description: There are two audio output sources on my laptop, one is the internal speakers and the second is via the DisplayPort. At random intervals during the day KDE / Plasma will start switching rapidly between the two, it was particularly apparent today and went on for some minutes. Both sets of speakers seem to test ok, audio out of all 4 speakers. When viewed in the Audio section of System Settings the two audio outputs can be seen rapidly flicking between the two. As always, happy to collect any more information ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: plasma-desktop 4:5.27.12-0ubuntu0.1 ProcVersionSignature: Ubuntu 6.11.0-28.28~24.04.1-generic 6.11.11 Uname: Linux 6.11.0-28-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.30.0-0ubuntu4.4 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: KDE Date: Thu Aug 28 10:27:50 2025 InstallationDate: Installed on 2024-12-13 (258 days ago) InstallationMedia: Ubuntu 22.04.5 LTS "Jammy Jellyfish" - Release amd64 (20240911) SourcePackage: plasma-desktop UpgradeStatus: Upgraded to noble on 2024-12-16 (255 days ago) --- ProblemType: Bug ApportVersion: 2.30.0-0ubuntu4.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: owen 4422 F.... wireplumber /dev/snd/controlC0: owen 4422 F.... wireplumber /dev/snd/controlC1: owen 4422 F.... wireplumber /dev/snd/seq: owen 4418 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: KDE DistroRelease: Ubuntu 24.04 InstallationDate: Installed on 2024-12-13 (259 days ago) InstallationMedia: Ubuntu 22.04.5 LTS "Jammy Jellyfish" - Release amd64 (20240911) MachineType: Dell Inc. Precision M4800 NonfreeKernelModules: nvidia_modeset nvidia Package: alsa-driver (not installed) ProcVersionSignature: Ubuntu 6.11.0-28.28~24.04.1-generic 6.11.11 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. Tags: noble Uname: Linux 6.11.0-28-generic x86_64 UpgradeStatus: Upgraded to noble on 2024-12-16 (256 days ago) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/13/2019 dmi.bios.release: 65.26 dmi.bios.vendor: Dell Inc. dmi.bios.version: A26 dmi.board.name: 0T3YTY dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA26:bd06/13/2019:br65.26:svnDellInc.:pnPrecisionM4800:pvr00:rvnDellInc.:rn0T3YTY:rvrA00:cvnDellInc.:ct9:cvr:sku05CC: dmi.product.name: Precision M4800 dmi.product.sku: 05CC dmi.product.version: 00 dmi.sys.vendor: Dell Inc. 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