Bug 3089 - bogus "Critical temperature reached (226 C), shutting down." when machine is under load and AC is unplugged
Summary: bogus "Critical temperature reached (226 C), shutting down." when machine is ...
Status: RESOLVED FIXED
Alias: None
Product: Mageia
Classification: Unclassified
Component: RPM Packages (show other bugs)
Version: 1
Hardware: x86_64 Linux
Priority: Normal critical
Target Milestone: ---
Assignee: Thomas Backlund
QA Contact:
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Blocks:
 
Reported: 2011-10-17 17:17 CEST by Christian Lohmaier
Modified: 2012-05-06 19:36 CEST (History)
1 user (show)

See Also:
Source RPM: kernel-2.6.38.8-6.mga1.src.rpm
CVE:
Status comment:

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Description Christian Lohmaier 2011-10-17 17:17:33 CEST 
Description of problem:
When the machine is under load and fans running at full speed, the temperature as read by acpi is somewhere betweeen 80 and 90 degrees Celsius. 

However when you unplug the AC, the machine shuts down with the

"Critical temperature reached (226 C), shutting down." 

and it is always at 226°

trip points are at 95° and 127° respectively, and they also kick in. This is read from acpi when air flow was obstructed to let the temperature raise above the trip point - it switches to passive mode as expected:

Thermal 0: passive, 96.0 degrees C
Thermal 0: trip point 0 switches to mode critical at temperature 127.0 degrees C
Thermal 0: trip point 1 switches to mode passive at temperature 95.0 degrees C
Thermal 0: trip point 2 switches to mode active at temperature 95.0 degrees C

There is no way that the 226°C are anywhere close to the real value, and the emergency shutdown doesn't occur when AC is not unplugged or when it is unplugged  before putting it under load.

Plugging AC in when running on battery doesn't trigger the shutdown.

(the machine is a Fujitsu Siemens Esprimo Mobile U9200)
Comment 1 Manuel Hiebel 2011-10-29 16:09:09 CEST 
Thomas something for you ?

Assignee: bugsquad => tmb

Comment 2 Marja Van Waes 2012-02-01 07:52:32 CET 
Pinging, because nothing has happened with this report for more than 3 months, it still has the status NEW or REOPENED.


@ tmb
Please set status to ASSIGNED if you think this bug was assigned correctly. If for work flow reasons you can't do that, then please put OK on the whiteboard instead. Don't change anything if you want to be pinged by me in this report again ;)

CC: (none) => marja11

Comment 3 Marja Van Waes 2012-05-06 18:10:26 CEST 
3-monthly ping
Comment 4 Christian Lohmaier 2012-05-06 18:45:50 CEST 
can probably be closed old/wontfix/worksforme - one single test 2.6.38.8-netbook-10.mga didn't trigger the problem, and I also couldn't trigger it with the beta3 live iso.

maybe
- hwmon: coretemp: Relax target temperature range check
or one of the other aspm related changes did fix it...
Comment 5 Marja Van Waes 2012-05-06 19:36:09 CEST 
(In reply to comment #4)
> can probably be closed old/wontfix/worksforme - one single test
> 2.6.38.8-netbook-10.mga didn't trigger the problem, and I also couldn't trigger
> it with the beta3 live iso.
> 
> maybe
> - hwmon: coretemp: Relax target temperature range check
> or one of the other aspm related changes did fix it...

Thanks, Christian.

Closing as fixed, feel free to reopen if needed

Status: NEW => RESOLVED
Resolution: (none) => FIXED
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