jsalisbury, I tried to install the upstream kernel but ran into problems. As stated in the wiki page you linked, out-of-tree modules need to be disabled to use that kernel version. However, doing that disabled the wireless on my system (somewhat old laptop), so I had to revert.
Anyway, this problem is not occurring constantly. So even if it doesn't immediately appear when using another kernel that wouldn't mean it couldn't show up later. I do have a little more information that might be helpful, though: I have a second, similar laptop running XUbuntu that never exhibits this problem. Here are the outputs of uname -a: Problem does not occur: Linux 3.13.0-57-generic #95-Ubuntu SMP Fri Jun 19 09:27:48 UTC 2015 i686 i686 i686 GNU/Linux Problem does occur: Linux 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux So, the kernel versions are close to the same, both 3.13.0, but the architecture is not: i686 vs. x86. -- 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/1477726 Title: kswapd0 using 100% CPU Status in linux package in Ubuntu: Confirmed Bug description: This is apparently a long standing issue; I've seen multiple unresolved bug reports dating back to 2009. But instead of collecting all information in one place, apparently it is preferred that new reports are filled. So here it is. The problem is still the same as what other user reported: seemingly at random, kswapd0 will start using 100% CPU. This happens regardless of whether or not a swap space is being used. There is plenty more information about this bug in previous reports on this same issue here on launchpad. Maybe it would be a good idea to collect all this information into one bug-report, but I don't know how to do that. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-24-generic 3.13.0-24.47 ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: tobias 2883 F.... pulseaudio /dev/snd/controlC0: tobias 2883 F.... pulseaudio CurrentDesktop: X-Cinnamon Date: Thu Jul 23 20:52:43 2015 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=913fc4bc-8ae0-401b-a43d-06ec493a9c1d InstallationDate: Installed on 2014-05-26 (423 days ago) InstallationMedia: Linux Mint 16 "petra" - Release amd64 20131126 MachineType: Hewlett-Packard HP Pavilion dv7 Notebook PC ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-24-generic root=/dev/mapper/mint--vg-root ro UUID=913fc4bc-8ae0-401b-a43d-06ec493a9c1d quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-24-generic N/A linux-backports-modules-3.13.0-24-generic N/A linux-firmware 1.127.11 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/22/2009 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: F.03 dmi.board.name: 3639 dmi.board.vendor: Quanta dmi.board.version: 33.11 dmi.chassis.type: 10 dmi.chassis.vendor: Quanta dmi.chassis.version: N/A dmi.modalias: dmi:bvnHewlett-Packard:bvrF.03:bd08/22/2009:svnHewlett-Packard:pnHPPaviliondv7NotebookPC:pvr039F200000241210000020000:rvnQuanta:rn3639:rvr33.11:cvnQuanta:ct10:cvrN/A: dmi.product.name: HP Pavilion dv7 Notebook PC dmi.product.version: 039F200000241210000020000 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1477726/+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
