Hi Thomas, thank you for the help to gather more information. I added "initcall_debug" in grub and tested the suspend / cpu-lockup problem after a rebooting into the new grub config.
I tried it different times, and can say, that the connected Thunderbolt dock was not the problem, as the cpu-lockup also happens, when the laptop was not connected to anything. It is not happening on each suspend, but after some rounds of suspend+resume I can see the problem. In the attachment is the kern.log with two incidents, the last one took quite a while (8000s). If you have any other idea or have things I can test, I am happy to help! Best regards, Michael ** Attachment added: "kernel.log.tgz" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1957808/+attachment/5560417/+files/kernel.log.tgz -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1957808 Title: Kernel soft lockup after resume Status in linux package in Ubuntu: Confirmed Bug description: Sometimes the kernel hangs after resuming from suspend. It might be a problem when suspending, while the DELL thunderbolt dock is connected. ProblemType: Bug DistroRelease: Ubuntu 21.10 Package: linux-image-5.13.0-25-generic 5.13.0-25.26 ProcVersionSignature: Ubuntu 5.13.0-25.26-generic 5.13.19 Uname: Linux 5.13.0-25-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu71 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: minni 5443 F.... pulseaudio /dev/snd/pcmC0D0c: minni 5443 F...m pulseaudio /dev/snd/pcmC0D0p: minni 5443 F...m pulseaudio /dev/snd/timer: minni 5443 f.... pulseaudio CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Thu Jan 13 15:53:19 2022 InstallationDate: Installed on 2020-12-19 (389 days ago) InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022) MachineType: Dell Inc. XPS 15 9500 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.13.0-25-generic root=/dev/mapper/vgubuntu-root ro quiet splash acpi_osi=Linux vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.13.0-25-generic N/A linux-backports-modules-5.13.0-25-generic N/A linux-firmware 1.201.3 SourcePackage: linux UpgradeStatus: Upgraded to impish on 2021-10-17 (88 days ago) dmi.bios.date: 05/26/2021 dmi.bios.release: 1.8 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.8.1 dmi.board.name: 05XYW7 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:bd05/26/2021:br1.8:svnDellInc.:pnXPS159500:pvr:rvnDellInc.:rn05XYW7:rvrA00:cvnDellInc.:ct10:cvr:sku097D: dmi.product.family: XPS dmi.product.name: XPS 15 9500 dmi.product.sku: 097D dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1957808/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
