내 ThinkPad는 코어 주파수당 400MHz로 제한되어 있습니다. 코어의 정상 속도로 클럭하도록 강제할 수 있는 방법이 있습니까?

Lenovo ThinkPad 및 Intel CPU에는 각 코어 주파수가 400MHz로 제한되는 일반적인 문제가 있는 것 같습니다.

• https://forums.lenovo.com/t5/ThinkPad-LR-and-SL-series/L380-stuck-on-0-4-GHz-when-loading/td-p/4333148
• https://www.reddit.com/r/thinkpad/comments/96gnur/yoga_370_cpu_stuck_at_038_ghz/
• https://www.reddit.com/r/thinkpad/comments/6uhu31/t470_cpu_throtdling_stuck_on_400_mhz_when_on/

흥미롭게도 이는 운영 체제에만 기반한 것이 아닙니다. 이 제한은 BIOS 또는 진단에서도 발생할 수 있습니다. 때때로 정상 속도로 돌아오지만 영원히는 아닙니다. 배터리가 조절되면 배터리도 충전되지 않습니다.

무엇이 원인인지, 해결책은 무엇인지에 대해서는 명확한 답이 없는 것 같습니다. 저에게 촉매제는 자면서 노트북을 방전시켰을 때인 것 같았습니다. 나는 일주일 동안 이 문제를 다루었습니다. 이미 나는:

• 업데이트된 BIOS
• 롤백 BIOS
• 다른 충전기를 사용해 보았습니다.
• 배터리를 분리하고 커패시터를 방전시킵니다.
• 시계 배터리 분리
• BIOS에서 CPU 설정 변경
• 재설정하려면 길게 누르세요.

새 배터리 구입과 코어 사용을 제외하고는 거의 모든 작업이 완료되었습니다. 내가 아는 바로는 사람들이 배터리를 새 배터리로 교체하려고 시도했지만 그 해결책은 한동안만 효과가 있었습니다.

커널로 무엇을 할 수 있는지 알고 싶습니다. C++, Qt, C 프로그래밍은 잘하지만 커널을 모르고 CPU 등에 대한 경험도 없습니다.

1. 이 문제를 처리하기 위해 탐색할 수 있는 커널 모듈이 있습니까?
2. 커널이 클럭 속도를 강제로 높일 수 있습니까?
3. 내 컴퓨터를 일반 클럭 속도로 되돌릴 수 있는 보다 효율적인 기존 솔루션이 있습니까?

감사해요.

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편집: 주지사를 절전에서 성능으로 변경한 후에도 여전히 동일한 문제가 나타납니다.

앞으로:

➜  ~ cpupower -c all 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:  Cannot determine or is not supported.
  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: Unable to call hardware
  current CPU frequency: 400 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
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:  Cannot determine or is not supported.
  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: Unable to call hardware
  current CPU frequency: 400 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
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:  Cannot determine or is not supported.
  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: Unable to call hardware
  current CPU frequency: 400 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
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:  Cannot determine or is not supported.
  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: Unable to call hardware
  current CPU frequency: 400 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes

---

뒤쪽에:

➜  ~ sudo cpupower frequency-set -g performance       
[sudo] password for anon: 
Setting cpu: 0
Setting cpu: 1
Setting cpu: 2
Setting cpu: 3
➜  ~ cpupower -c all 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:  Cannot determine or is not supported.
  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 "performance" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 400 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
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:  Cannot determine or is not supported.
  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 "performance" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 400 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
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:  Cannot determine or is not supported.
  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 "performance" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 400 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
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:  Cannot determine or is not supported.
  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 "performance" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 400 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes