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[Davide Depau <david.dep.1996@xxxxxxxxx>]

This is not a duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1197311
That is another DIFFERENT bug I reported. I also included information about this problem but they told me to file a new bug.

Daniel Letzeisen wrote:
> You may want to look at: https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.17/+bug/77370
It's different: the fan is not just always on (it is always on in any case because I set an option in the EFI settings); it just starts rotating very very fast; I've never seen it rotating so fast, even if the PC was very hot; it happened that the PC turned off because it was too hot and the kernel wasn't able to make the fan rotate at the right speed.

But after a suspend the sound is like a vacuum machine! :)

** Tags removed: needs-kernel-logs needs-upstream-testing

** Tags added: needs-kernel-logs

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https://bugs.launchpad.net/bugs/1203286

Title:
  [HP Probook 4510s] System fan not working correctly after suspend

Status in The Linux Kernel:
  Unknown
Status in “linux” package in Ubuntu:
  New

Bug description:
  I noticed that since Natty or Oneiric (I don't remember precisely) I have a strange behaviour: after resuming the PC from suspend, the fan starts rotating too fast, even if the PC is not hot. When I first had the problem, I could solve it by (dis)connecting the power cable. In latest versions of Ubuntu, maybe since Precise, this workaround doesn't work anymore.
  I have the mainline kernel downloaded from here: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc1-saucy/

  I attached some logs, I don't know what else I can provide to help
  troubleshooting this bug.

  I'm using Ubuntu 13.10 amd64.

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