kernel-packages team mailing list archive

["Harri K. Hiltunen" <harri.k.hiltunen@xxxxxxxxx>]

The thermald throttling malfunctioning is interesting.

Yes, I believe my laptop is among the several % of portables having
cooling issues due to old age and/or on-the-edge design. Like I said,
it's a common ailment. Just google "ubuntu laptop overheating" to find
out how common. What are we supposed to do to fix that? Approach thermal
grease manufacturers about the short life of their products? Solving my
problem overhauling my computer is not fixing the problem, it's cover
up.

Now how about fixing all the ways the kernel is behaving badly in all
those overheating machines?

Things for software to do in an overheating case (from the original bug report):
-use the fan up to its maximum speed (not up to what a designer years ago assumed would probably be enough)
-throttle the CPU (thermald troubleshooting in progress)
-in a heat emergency, suspend in 1 second instead of shutting down wasting 8 seconds and my session

-- 
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/1491797

Title:
  Shuts down when supposed to suspend as a reaction to self-caused
  overheat, session lost

Status in linux package in Ubuntu:
  In Progress

Bug description:
  Error:
  Kernel foolishly shuts down the computer when it overheats.
  /var/log/kern.log
  W500 kernel: [1448.648529] thermal thermal_zone1: critical temperature reached (100 C), shutting down

  Consequence:
  Shutting down destroys session in Ubuntu, Gnome, and all applications that can't remember their latest conscious state (most applications).

  Attempted repair, failed:
  Laptop has suspending ability, but I can't find the setting for the kernel to make the computer suspend instead of shutting down.

  Repair suggestions:
  1. Persistence of session, so that everything would reappear after the restart. (this would also make updating less disruptive)
  2. Do not heat the machine like crazy; speed up fans or slow down processes. (problematic Lenovo Thinkpad W500 fan on low speed right up to the fiery end)
  3. Put the computer to suspend when it's too hot.

  (The problem has remained the same from at least Ubuntu 11.10 through
  14.04)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-62-generic 3.13.0-62.102
  ProcVersionSignature: Ubuntu 3.13.0-62.102-generic 3.13.11-ckt24
  Uname: Linux 3.13.0-62-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.12
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  user       2171 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu Sep  3 13:42:28 2015
  HibernationDevice: RESUME=UUID=991e1383-ff5b-46c1-84c4-c904e1d81256
  InstallationDate: Installed on 2013-12-29 (612 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 4063B22
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-62-generic root=UUID=bd426989-b545-41b3-97b8-de9410f27aa6 ro persistent quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-62-generic N/A
   linux-backports-modules-3.13.0-62-generic  N/A
   linux-firmware                             1.127.15
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2014-04-27 (494 days ago)
  dmi.bios.date: 12/14/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6FET92WW (3.22 )
  dmi.board.name: 4063B22
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr6FET92WW(3.22):bd12/14/2011:svnLENOVO:pn4063B22:pvrThinkPadW500:rvnLENOVO:rn4063B22:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4063B22
  dmi.product.version: ThinkPad W500
  dmi.sys.vendor: LENOVO

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