Basically, I'm trying to reduce the thermals of an Ubuntu install and trying everything. Quiet as can be in Windows 10 except for gaming, as it should be; Ubuntu fans rev up to 75-100% doing simple tasks.
Anyway, going down the list of things to try and PowerTOP is one of them.
Ran sudo powertop --calibrate --html enough times to have enough measurements for doing --auto-tune. Was getting errors related to there not being enough measurements.
Now when I run sudo powertop --auto-tune I just get the following output. Isn't clear to me if it is working, but seem like it isn't:
modprobe cpufreq_stats failedLoaded 435 prior measurements
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
Leaving PowerTOP
So what gives here? Googling isn't helping much.
Otherwise, I've tried tlp and a few other things. Only marginally help in reducing fan noise.
Had the same problem as you with same error - had to --calibrate then reboot then --calibrate again and then --auto-tune All worked then