我正在使用带有 2 个 CPU 和 ubuntu 14.04 TLS 的 vmware，我安装了低延迟内核 3.19.0-61。但是这个内核不知道 CPU 是什么：
~$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to [email protected], please.
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU
maximum transition latency: 4294.55 ms.
analyzing CPU 1:
no or unknown cpufreq driver is active on this CPU
maximum transition latency: 4294.55 ms.
请问，我该如何解决这个问题？