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Kaigo
Asked: 2019-11-20 02:14:48 +0800 CST

Powertop autotune error - Cannot load from file

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I'm trying to perform --auto-tune in powertop, however I get the following error

Cannot load from file /var/cache/powertop/saved_parameters.powertop

If I browse to that directory the file does exist.

I started by running --calibrate first, which completed okay.

Here is the full print out;

~ $ sudo powertop --auto-tune
modprobe cpufreq_stats failedLoaded 48 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 Using PowerCap Sysfs : Domain Mask f
RAPL device for cpu 0
RAPL Using PowerCap Sysfs : Domain Mask f
Devfreq not enabled
glob returned GLOB_ABORTED
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 333 measurement(s) connected to battery only
Leaving PowerTOP
powertop

2 Answers

  1. Best Answer

    That is normal. You see the explanation File will be loaded after taking minimum number of measurement(s) with battery only.

    This warning will go away after some time.

    • 4

  2. Run sudo powertop for some time and the counter will reach 0

    • 1