1、打开终端，执行：
               sudo  vim  /etc/default/grub
2、找到GRUB_CMDLINE_LINUX_DEFAULT=这一行,在引号里面添加一项intel_pstate=disable（需要手动输入）

3、保存后，执行：
               sudo update-grub
4、重启。

谢谢，另外我在ubuntu 19.10 新立得中发现了

cpufreqtil这款工具对应 Linux 内核 cpufreq 特性的工具其描述如下：
  
This package contains two utilities for inspecting and setting the CPU
frequency through both the sysfs and procfs CPUFreq kernel interfaces.

By default, it also enables CPUFreq at boot time if the correct CPU driver
is found.
另外在ubuntu应用商店里看到这样一款shell扩展插件：
Gnome CPU Frequency Monitor and Governor Manager其描述如下：
This is a lightweight CPU frequency scaling monitor and powerful CPU management tool. The extension is using standard cpufreq kernel modules to collect information and manage governors. It needs root permission to able changing governors.
Features: ⚫ Compatible with many hardware architectures; ⚫ CPU Frequency monitoring; ⚫ CPU Governor management; ⚫ CPU Frequency speed limits; ⚫ CPU Boost supporting; ⚫ CPU Power on/off supporting; ⚫ Saving/Restoring settings...
使用发现，笔记本发热量非常轻，几乎感觉不到底部的热量，效果甚至超过了自带的win10