I was making some testing with undervolting using the intel_cpufreq driver. By chance I realized that the proccessor supossed to use the intel_pstate, but it uses intel_cpufreq driver instead!!
Kernel should have load that driver automatically but it doesnt. I tried to "force" enable it with intel_pstate=enable kernel parameter via grub, but didn't work either.
Any ideas??
Adding the intel_pstate=active parameter did the trick.
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