Red Hat Bugzilla – Bug 454976
System fan doesn't turn on after wakeup/resume
Last modified: 2013-01-10 02:04:44 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9) Gecko/2008061712 Fedora/3.0-1.fc9 Firefox/3.0
Description of problem:
When suspend/hibernate the machine turns off the system fan.
On wakeup/resume? thermal module does not check, should the fan be turned back or not and leaves it is turned off. As a result, a laptop overheated and shut down after a while
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Enter the laptop goes into hibernation mode
2.Wait 20-30 minutes (laptops should cool)
4.Open some video file
5.Wait 5-10 min
7.You see - system temperature go up
8.Check current fan state:
"#cat /sys/bus/acpi/drivers/fan/PNP0C0B:03/thermal_cooling/cur_state" show 0
The temperature rises, fan is switched off, laptop shut down because of overheating.
Must be completed inspection of fan and temperature, and, if necessary, including fan for cooling.
"#cat /sys/bus/acpi/drivers/fan/PNP0C0B:03/thermal_cooling/cur_state" should show 1 rather than 0
Laptop HP 6715s: AMD Turion 64 X2 Mobile™ Technology, ATI X1250 IGP, 2 GB RAM, 120 GB HDD
Kernel error me thinks.
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