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 v4.16 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/v4.17-rc2 ** 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/1766078 Title: watchdog: BUG: soft lockup - CPU#7 stuck for 23s! [kworker/7:1:75] Status in linux package in Ubuntu: Incomplete Bug description: I had just done a power and BIOS reset to fix a battery problem -- disconnected the battery and the CMOS battery, and held down buttons to reset the power configuration and BIOS. (Not sure I would recommend this, but it worked!) Booting back into Ubuntu, I had this problem. Things seemed normal, but WiFi wouldn't connect, and any interaction with the system (trying to change wifi networks, turn off wifi, power down, restart) just resulted in no response. I did a Alt-SysRq REISUB and booted back in, saw this error report, and here we are. ProblemType: KernelOops DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-15-generic 4.15.0-15.16 [modified: boot/vmlinuz-4.15.0-15-generic] ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15 Uname: Linux 4.15.0-15-generic x86_64 Annotation: Your system might become unstable now and might need to be restarted. ApportVersion: 2.20.9-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: steve 1266 F.... pulseaudio Date: Sun Apr 22 14:25:35 2018 Failure: oops InstallationDate: Installed on 2018-04-21 (1 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180420) MachineType: Acer Spin SP515-51GN ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-15-generic.efi.signed root=UUID=9e351fb3-4ce7-444e-bfe9-07b1c7cd1519 ro quiet splash vt.handoff=1 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#7 stuck for 23s! [kworker/7:1:75] UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/26/2017 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.03 dmi.board.name: Buzz_KL dmi.board.vendor: KBL dmi.board.version: V1.03 dmi.chassis.type: 31 dmi.chassis.vendor: Acer dmi.chassis.version: V1.03 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.03:bd10/26/2017:svnAcer:pnSpinSP515-51GN:pvrV1.03:rvnKBL:rnBuzz_KL:rvrV1.03:cvnAcer:ct31:cvrV1.03: dmi.product.family: Spin 5 dmi.product.name: Spin SP515-51GN dmi.product.version: V1.03 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1766078/+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
