Le Sun, 06 Jan 2013 20:30:09 +0000
Ben Hutchings <b...@decadent.org.uk> a écrit:

> Control: tag -1 moreinfo
> 
> On Sun, 2013-01-06 at 21:04 +0100, gpe wrote:
> > Package: src:linux
> > Version: 3.7.1-1~experimental.2
> > Severity: normal
> > 
> > Dear Maintainer,
> > 
> >    * What led up to the situation?
> > 
> >    updating with kernel 3.7.1. My machine is a Lenovo T420 (model
> >    4180AT9)
> > 
> >    * What exactly did you do (or not do) that was effective (or
> >      ineffective)?
> > 
> >      starting the system and logging into gnome session
> > 
> >    * What was the outcome of this action?
> > 
> >    sensors reports temperatures for cores and thermal zone which are
> >    between 52°C and 60°C
> 
> This is not really very hot.

In absolute not but for an idle state ...

> 
> >    * What outcome did you expect instead?
> > 
> >    when running with kernel 3.6.9 the temperatures are under 42°C
> [...]
> 
> Did you test this immediately after rebooting?  I would expect an
> upgrade and reboot to make the CPU heat up.  You would have to leave it
> idle for some minutes to make a proper comparison.

Yes it's that I've done. I've switched several between 3.6.9 and 3.7.1 and
each the temperatures are significantly higher with 3.7.1.

> 
> If the temperature really stays higher with the newer kernel version
> then please install linux-tools-3.7 and generate a performance report:
> 
> # running as root:
> perf record -g -a sleep 60
> perf report -g > perf.txt

Could you confirm the last command please ?

Regards.


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