我需要一些帮助。自从我尝试按照这里的一些电源管理 wiki 操作后，我的笔记本电脑（HP pavilion cs0020ca）上的风扇就一直发出很大的噪音：https://help.ubuntu.com/community/PowerManagement/ReducedPower。除了安装 power.d hook 所需的部分外，我做了所有事情。但结果并不理想，所以我撤销了所有更改，但是，我不确定哪些更改被保留了下来，因为每当我的笔记本电脑使用交流电源时，CPU 频率就会降低到 3GHz 左右，这就是导致风扇尖叫的原因。这不是我想要的。我希望电源或电池的空闲频率较低，并且只在需要时提高频率（有效地更智能地利用涡轮增压）
因此，即使我使用交流电源并将 CPU 调速器设置为省电模式，它仍然会减速。当我拔下交流适配器时，它就会减速。
有人知道我该如何解决这个问题，以便我的 CPU 空闲频率即使在交流电源下也很低，并且只在需要时加速？
在交流电源上，cpufreq-info显示以下内容：
nick@nick-HP-Pavilion-Laptop-15-cs0xxx:~$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to [email protected], please.
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: 4294.55 ms.
hardware limits: 400 MHz - 3.40 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 400 MHz and 3.40 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 3.14 GHz.
analyzing CPU 1:
driver: intel_pstate
CPUs which run at the same hardware frequency: 1
CPUs which need to have their frequency coordinated by software: 1
maximum transition latency: 4294.55 ms.
hardware limits: 400 MHz - 3.40 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 400 MHz and 3.40 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 3.06 GHz.
analyzing CPU 2:
driver: intel_pstate
CPUs which run at the same hardware frequency: 2
CPUs which need to have their frequency coordinated by software: 2
maximum transition latency: 4294.55 ms.
hardware limits: 400 MHz - 3.40 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 400 MHz and 3.40 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 3.11 GHz.
analyzing CPU 3:
driver: intel_pstate
CPUs which run at the same hardware frequency: 3
CPUs which need to have their frequency coordinated by software: 3
maximum transition latency: 4294.55 ms.
hardware limits: 400 MHz - 3.40 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 400 MHz and 3.40 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 3.30 GHz.
analyzing CPU 4:
driver: intel_pstate
CPUs which run at the same hardware frequency: 4
CPUs which need to have their frequency coordinated by software: 4
maximum transition latency: 4294.55 ms.
hardware limits: 400 MHz - 3.40 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 400 MHz and 3.40 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 3.22 GHz.
analyzing CPU 5:
driver: intel_pstate
CPUs which run at the same hardware frequency: 5
CPUs which need to have their frequency coordinated by software: 5
maximum transition latency: 4294.55 ms.
hardware limits: 400 MHz - 3.40 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 400 MHz and 3.40 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 3.06 GHz.
analyzing CPU 6:
driver: intel_pstate
CPUs which run at the same hardware frequency: 6
CPUs which need to have their frequency coordinated by software: 6
maximum transition latency: 4294.55 ms.
hardware limits: 400 MHz - 3.40 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 400 MHz and 3.40 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 3.30 GHz.
analyzing CPU 7:
driver: intel_pstate
CPUs which run at the same hardware frequency: 7
CPUs which need to have their frequency coordinated by software: 7
maximum transition latency: 4294.55 ms.
hardware limits: 400 MHz - 3.40 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 400 MHz and 3.40 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency is 3.29 GHz.
答案1
我检查了我的系统并检查了 intel_pstate 信息，发现所有系统都设置为省电模式，所以我不明白为什么 CPU 在交流电源下仍能加速到最大频率。
但是，我安装了 tlp，问题似乎已经自行解决了。
sudo apt install tlp tlp-rdw
和
sudo tlp start