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/v4.16-rc7 ** 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/1758620 Title: Excessive kworker invocations after wake from suspend Status in linux package in Ubuntu: Incomplete Bug description: Whenever I wake my computer from a "Suspend", System Monitor shows over 80 instances of kworker spontaneously get spawned. If I move the mouse, the PC crashes and I must restart. If I don't touch the mouse and let the PC sit untouched for about 10 minutes, the 80 extra kworker daemons terminate and only the "normal" 8 remain. The PC operates fine from then on. I get similar behaviour on 3 different machines, all 64 bit 16.04LTS. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-116-generic 4.4.0-116.140 ProcVersionSignature: Ubuntu 4.4.0-116.140-generic 4.4.98 Uname: Linux 4.4.0-116-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bob 1436 F.... pulseaudio CurrentDesktop: Unity Date: Sun Mar 25 02:26:12 2018 HibernationDevice: RESUME=UUID=0e553f8e-0d16-4cd5-9faa-b131ebed6c74 InstallationDate: Installed on 2018-03-01 (23 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: Hewlett-Packard Presario CQ62 Notebook PC ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-116-generic root=UUID=c94db9b0-0eb0-4d47-a791-a9dab0dc42cf ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-116-generic N/A linux-backports-modules-4.4.0-116-generic N/A linux-firmware 1.157.17 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/08/2010 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: F.0A dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 1444 dmi.board.vendor: Hewlett-Packard dmi.board.version: 69.17 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.chassis.version: N/A dmi.modalias: dmi:bvnHewlett-Packard:bvrF.0A:bd06/08/2010:svnHewlett-Packard:pnPresarioCQ62NotebookPC:pvr0498100000242810000020000:rvnHewlett-Packard:rn1444:rvr69.17:cvnHewlett-Packard:ct10:cvrN/A: dmi.product.name: Presario CQ62 Notebook PC dmi.product.version: 0498100000242810000020000 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1758620/+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
