I think this was something that we all made mistake, adding intel_pstate=disable into grub command-line, seeing it open more CPU Frequencies to choose, and then thinking that it "unlocked" the frequencies. I used to believe the same, until I read more about these I realized that it was not. It's not "unlock" anything, it just switching intel_pstate to a general cpu-freq scaling driver called acpi_cpufreq
So let's start to find out what is CPUFreq. According to a post by Lenovo
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