kernel-packages team mailing list archive

[TobiasGWV <tobias.verhulst@xxxxxxxxx>]

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

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