我正在尝试使用 cpu 频率缩放来设置 cpu 频率。在我的系统中，仅支持 powersave 、性能频率缩放调节器。在其他文档中解释过，默认情况下， intel_pstate 是启用的，并且它只支持 powersave ，性能频率缩放-governor ，解决方案是禁用 intel_pstate 。
所以我尝试如下禁用
sudo nano /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="intel_pstate=disable"
sudo update-grub
重新启动时，intel_pstate 启用。
所以，我再次对 grub 进行了以下更改
sudo nano /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="intel_pstate=disable acpi=force"
sudo update-grub
重新启动后，它仍然显示 intel_pstate 已启用。
当我执行以下命令时，
$ cpupower -c all frequency-info
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: Cannot determine or is not supported.
hardware limits: 1.60 GHz - 3.90 GHz
available cpufreq governors: performance powersave
current policy: frequency should be within 1.60 GHz and 3.90 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency: 1.72 GHz (asserted by call to hardware)
boost state support:
Supported: yes
Active: yes
25500 MHz max turbo 4 active cores
25500 MHz max turbo 3 active cores
25500 MHz max turbo 2 active cores
25500 MHz max turbo 1 active cores
$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver
intel_pstate
$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
performance powersave
由于用户空间调控器不可用，我无法使用 cpu 频率缩放 (cpupower )。
我正在使用 Intel Core-i7 @3.40GHZ、Linux debian-8.0（内核 3.16.35）。
如果你能帮我解决这个问题，那将是一个很大的帮助。
先感谢您。
EDIT 1:
根据 Peter Cordes 的建议，我在启动时进行手动输入，现在intel_pstate 已禁用，但没有 cpu 频率调节器或 acpi cpuFrequency 驱动程序未激活。
root@debian:~# cpupower -c 0 frequency-info
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU
CPUs which run at the same hardware frequency: Not Available
CPUs which need to have their frequency coordinated by software: Not Available
maximum transition latency: Cannot determine or is not supported.
hardware limits: Not Available
available cpufreq governors: Not Available
Unable to determine current policy
current CPU frequency: Unable to call hardware
current CPU frequency: Unable to call to kernel
boost state support:
Supported: yes
Active: yes
25500 MHz max turbo 4 active cores
25500 MHz max turbo 3 active cores
25500 MHz max turbo 2 active cores
25500 MHz max turbo 1 active cores
由于没有可用的CPU频率调节器，我无法设置CPU频率。当我尝试设置 CPU 频率时收到以下错误消息。
root@debian:~# cpupower -c 0 frequency-set -f 2000000
Setting cpu: 0
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not available,
for example because of hardware which cannot be set to a specific frequency
or because the userspace governor isn't loaded?
