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[Bug 1491797] Re: Shuts down when supposed to suspend as a reaction to self-caused overheat, session lost


Speaking to Lenovo won't automatically fix the issue, because it is way
harder to get people to install bios updates than to accept kernel

Fan control disengaged mode works: fan runs 4700 RPM, which keeps
temperature down at 84 C after several minutes at full load.
Unfortunately in disengaged mode the fan always runs 4700 RPM, no matter
what temperature or load.

So, make the system switch between fan control modes according to
temperature and its growth rate to narrowly avoid hitting 100 C (it
needs to be done on many affected Lenovos).

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

Status in linux package in Ubuntu:

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

  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

  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
   /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
   Socket 0:
     no product info available
   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
   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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