fix_cpufreq_x64.sh

for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
  echo "userspace" | sudo tee $i;
done

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_frequencies

for i in /sys/devices/system/cpu/cpu*/cpufreq/scaling_setspeed; do
  echo 2601000 | sudo tee $i;
done

sudo sh -c "echo 0 > /sys/devices/system/cpu/cpufreq/boost"

Set a boot parameter at /etc/default/grub as follows.

GRUB_CMDLINE_LINUX_DEFAULT="... intel_pstate=disable”