Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.15 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc1/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1735514 Title: watchdog: BUG: soft lockup - CPU#6 stuck for 22s! [kworker/6:1:72] Status in linux package in Ubuntu: Incomplete Bug description: Ubuntu 4.13.0-17.20-generic 4.13.8 ProblemType: KernelOops DistroRelease: Ubuntu 18.04 Package: linux-image-4.13.0-17-generic 4.13.0-17.20 ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8 Uname: Linux 4.13.0-17-generic x86_64 Annotation: Your system might become unstable now and might need to be restarted. ApportVersion: 2.20.8-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: vkareh 1928 F.... pulseaudio Date: Thu Nov 30 12:39:03 2017 Failure: oops InstallationDate: Installed on 2017-11-30 (0 days ago) InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Alpha amd64 (20171130) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 04f3:24a0 Elan Microelectronics Corp. Bus 001 Device 002: ID 0cf3:e301 Atheros Communications, Inc. Bus 001 Device 004: ID 1bcf:2b95 Sunplus Innovation Technology Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 15 9560 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-17-generic.efi.signed root=UUID=019a287c-bc9e-4471-9e47-49616737694f ro quiet splash acpi_rev_override=1 vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: kerneloops-daemon N/A SourcePackage: linux Title: watchdog: BUG: soft lockup - CPU#6 stuck for 22s! [kworker/6:1:72] UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/30/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.5.0 dmi.board.name: 05FFDN dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.5.0:bd08/30/2017:svnDellInc.:pnXPS159560:pvr:rvnDellInc.:rn05FFDN:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 9560 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1735514/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
