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