Bug 3089

Summary:	bogus "Critical temperature reached (226 C), shutting down." when machine is under load and AC is unplugged
Product:	Mageia	Reporter:	Christian Lohmaier <lohmaier+mageia>
Component:	RPM Packages	Assignee:	Thomas Backlund <tmb>
Status:	RESOLVED FIXED	QA Contact:
Severity:	critical
Priority:	Normal	CC:	marja11
Version:	1
Target Milestone:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Source RPM:	kernel-2.6.38.8-6.mga1.src.rpm	CVE:
Status comment:

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 226Â°

trip points are at 95Â° and 127Â° 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 226Â°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