我在联想 Y50-70 上运行 kubuntu 15.10，我有一个非常烦人的 CPU 时钟问题：每当计算机从睡眠状态恢复时，CPU 时钟的最大值较低，而且这种情况不仅发生一次，而且在每次恢复时钟都会变慢，直到它从最初的 3.6 GHz 下降到 ~600 MHz。
alain@alain-Y50-70:~$ sudo -i
[sudo] password for alain:
root@alain-Y50-70:~# cpupower frequency-info
analyzing CPU 0:
driver: intel_pstate
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 0.97 ms.
hardware limits: 800 MHz - 3.60 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 800 MHz and 3.60 GHz.
The governor "powersave" may …