>>97
intel_idle.max_cstate= [KNL,HW,ACPI,X86]
  0 disables intel_idle and fall back on acpi_idle.
  1 to 6 specify maximum depth of C-state.

intel_pstate= [X86]
  disable
   Do not enable intel_pstate as the default
   scaling driver for the supported processors

INTEL系のドライバで電源管理(ACPIとCPUFREQ)を使おうとするとダメなんじゃないの

intel_pstateよりもacpi_cpufreqの方が優秀な気がする(ondemandで動くし)