I have found out that the docking station (Dell) was the root cause for the problem. This has now been replaced with a new. This topic can be closed.
** Description changed: after update of kernel the Audio output via dock - HDMI is no longer working. the display is showing that the audio i receving but there is no audio. If I switch to normal speakers on the laptop the audio is working. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.8.0-38-generic 6.8.0-38.38 ProcVersionSignature: Ubuntu 6.8.0-38.38-generic 6.8.8 Uname: Linux 6.8.0-38-generic x86_64 ApportVersion: 2.28.1-0ubuntu3 Architecture: amd64 CRDA: N/A CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sat Jul 20 18:45:44 2024 InstallationDate: Installed on 2024-03-11 (131 days ago) InstallationMedia: Ubuntu 23.10.1 "Mantic Minotaur" - Release amd64 (20231016.1) - MachineType: LENOVO 20XK007DMX + ProcEnviron: LANG=da_DK.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-38-generic root=UUID=735a8489-6e61-48ac-a281-46d43115ef53 ro quiet splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-6.8.0-38-generic N/A linux-backports-modules-6.8.0-38-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2.1 SourcePackage: linux UpgradeStatus: Upgraded to noble on 2024-05-22 (59 days ago) dmi.bios.date: 10/30/2023 dmi.bios.release: 1.25 dmi.bios.vendor: LENOVO dmi.bios.version: R1MET55W (1.25 ) dmi.board.asset.tag: Not Available dmi.board.name: 20XK007DMX dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.ec.firmware.release: 1.25 - dmi.modalias: dmi:bvnLENOVO:bvrR1MET55W(1.25):bd10/30/2023:br1.25:efr1.25:svnLENOVO:pn20XK007DMX:pvrThinkPadT14Gen2a:rvnLENOVO:rn20XK007DMX:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20XK_BU_Think_FM_ThinkPadT14Gen2a: - dmi.product.family: ThinkPad T14 Gen 2a - dmi.product.name: 20XK007DMX + dmi.modalias: dmi.product.family: ThinkPad T14 Gen 2a dmi.product.sku: LENOVO_MT_20XK_BU_Think_FM_ThinkPad T14 Gen 2a dmi.product.version: ThinkPad T14 Gen 2a dmi.sys.vendor: LENOVO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2073676 Title: after update of kernel HDMI audio is not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2073676/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs