Bug 60590 - System fan not working correctly after suspend (HP Probook 4510s)
Summary: System fan not working correctly after suspend (HP Probook 4510s)
Status: CLOSED INSUFFICIENT_DATA
Alias: None
Product: Power Management
Classification: Unclassified
Component: Hibernation/Suspend (show other bugs)
Hardware: x86-64 Linux
: P1 normal
Assignee: Rafael J. Wysocki
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-07-20 11:51 UTC by Davide Depau
Modified: 2014-03-23 13:55 UTC (History)
3 users (show)

See Also:
Kernel Version: 3.11.03.11.0-031100rc1-generic (and a few previous versions)
Subsystem:
Regression: Yes
Bisected commit-id:

Attachments
Some kernel logs (26.08 KB, application/x-gunzip)
2013-07-20 11:52 UTC, Davide Depau 		Details
dump of acpidump (538.81 KB, text/plain)
2014-03-23 13:55 UTC, Krzysztof Ciebiera 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Davide Depau 2013-07-20 11:51:50 UTC 
I use Ubuntu in my laptop (HP Probook 4510s). 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'm reporting this bug here (and not in Launchpad) because I installed the mainline kernel from here: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc1-saucy/
and the problem is still present.
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.
Comment 1 Davide Depau 2013-07-20 11:52:19 UTC 
Created attachment 106959 [details]
Some kernel logs
Comment 2 Aaron Lu 2013-11-18 02:28:55 UTC 
Attach acpidump please:
# acpidump > acpidump.txt
Comment 3 Aaron Lu 2013-12-02 08:55:15 UTC 
ping
Comment 4 Krzysztof Ciebiera 2014-03-23 13:55:29 UTC 
Created attachment 130351 [details]
dump of acpidump

I have the same laptop and exactly the same problem.
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