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

[Davide Depau]

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.

[Daniel Letzeisen (dtl131)]

You may want to look at: https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.17/+bug/77370

[Davide Depau (depau)]

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! :)

[Davide Depau (depau)]

I also removed the tag "needs-upstream-testing" because I'm already running the mainline kernel, if you read the description...
I will attach a log after suspend soon.

[Daniel Letzeisen (dtl131)]

I should have been more specific. There is discussion specific to the 4510s towards then end of the bug report: https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.17/+bug/77370/comments/96

[Davide Depau (depau)]

OK, I will read it.

[Davide Depau (depau)]

OK, that's what I'm talking about. I will try the scripts provided in that
bug and check lm-sensors. At the moment I cannot test it as the fan is not
fisically working (it started making strange sounds yesterday and I had to
turn the PC off), and anyway I'm writing from the phone...

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.11 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc2-saucy/

[Davide Depau (depau)]

I think this bug has been fixed. I tried to repeat the steps (shut down the PC, open and close quickly the lid) and the PC shut down normally without suspending. I repeated it three or four times before coming back here, and it didn't happen again.

[penalvch (penalvch)]

Davide Depau, could you please confirm this issue exists with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

[Davide Depau (depau)]

I currently have the development version. I will do that tomorrow or the
next week as at the moment there is a thunderstorm and my internet
connection is very unstable, and I must use my (limited) mobile broadband.
Sorry.

On Thu, Sep 5, 2013 at 1:25 PM, Christopher M. Penalver <
<email address hidden>> wrote:

> Davide Depau, could you please confirm this issue exists with the latest
> development release of Ubuntu? ISO images are available from
> http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains,
> could you please run the following command in the development release
> from a Terminal (Applications->Accessories->Terminal), as it will
> automatically gather and attach updated debug information to this
> report:
>
> apport-collect -p linux <replace-with-bug-number>
>
> ** Changed in: linux (Ubuntu)
> Status: Confirmed => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> 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:
> Incomplete
>
> 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.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/linux/+bug/1203286/+subscriptions
>

--
Davide
<http://bashkaraoke.altervista.org>