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[Colin Ian King <728733@xxxxxxxxxxxxxxxxxx>]

thermald does also try to ensure the machine does not overheat via
passive cooling too (e.g. cpu freq scaling etc), so I thought it may be
useful to avoid the power-off overheating scenario.

It may be that once the kernel has booted it indicates to the firmware
that the system is under ACPI control so the BIOS fan control turns off
in favour for the OS control, which does not happen on Linux because we
don't have the secret sauce of the windows driver to do this.

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https://bugs.launchpad.net/bugs/728733

Title:
  fan only works when my acer 5315 is booted then stops

Status in acpi package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: acpi

  fan only works when my acer 5315 is booted then stops.i have a acer
  aspire 5315 laptop. My fan stopped working after installing ubuntu
  from vista. ive changed it for a new one and still the same problem.
  no dust aswel. please help

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: acpi 1.5-2
  ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
  Uname: Linux 2.6.35-22-generic i686
  Architecture: i386
  Date: Thu Mar  3 22:18:12 2011
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
  ProcEnviron:
   LANG=en_GB.utf8
   SHELL=/bin/bash
  SourcePackage: acpi

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