You are not logged in.

#1 2016-03-14 17:39:40

Mooder
Member
Registered: 2016-03-02
Posts: 12

Powertop cannot autotune (error)

Hi,

I am trying to set powertop autotune.

What I did:
Install the pckage with Pacman.

$ sudo powertop --calibrate
[...]

$ sudo powertop --auto-tune

Loaded 128 prior measurements
Cannot load from file /var/cache/powertop/saved_parameters.powertop
File will be loaded after taking minimum number of measurement(s) with battery only 
RAPL device for cpu 0
RAPL device for cpu 0
Devfreq not enabled
Cannot load from file /var/cache/powertop/saved_parameters.powertop
File will be loaded after taking minimum number of measurement(s) with battery only 
To show power estimates do 124 measurement(s) connected to battery only
  unknown op '{'
Leaving PowerTOP

I did the calibration twice and I still get the "cannot load from file...". I haven't noticed any improvement in battery life either. Battery is currently half way charged, I will check once it is full.

Last edited by Mooder (2016-03-14 17:41:37)

Offline

#2 2016-11-03 14:51:35

sadmansk
Member
Registered: 2016-11-03
Posts: 1

Re: Powertop cannot autotune (error)

I am having the same issue, hopefully we can get a reply from an expert.

Offline

#3 2016-11-13 09:36:22

bryan.paradis
Member
Registered: 2016-10-22
Posts: 43

Re: Powertop cannot autotune (error)

Do the following and check if there is a problem with powertop creating that file in var/cache. Maybe a permissions problem? Or never tries to create the file? Or it's looking in the wrong place?

sudo strace -F -tt -s 255 -o calibrate.strace sudo powertop --calibrate
grep "saved_parameters.powertop" calibrate.strace
sudo strace -F -tt -s 255 -o autotune.strace sudo powertop --autotune
grep "saved_parameters.powertop" autotune.strace

Last edited by bryan.paradis (2016-11-13 09:37:54)

Offline

Board footer

Powered by FluxBB