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corestud

Member

Registered: 2024-02-03

Posts: 1

CPU frequency is reduced after resuming from suspend

My computer (Lenovo G510) lowers the CPU (Core i5-4210M) clock every time it wakes up from sleep

After the full power-on maximum frequncy limit is set correctly as equal to the hardware limit.

$ cpupower frequency-info
analyzing CPU 0:
  driver: intel_cpufreq
  CPUs which run at the same hardware frequency: 2
  CPUs which need to have their frequency coordinated by software: 2
  maximum transition latency: 20.0 us
  hardware limits: 800 MHz - 3.20 GHz
  available cpufreq governors: conservative ondemand userspace powersave performance schedutil
  current policy: frequency should be within 800 MHz and 3.20 GHz.
                  The governor "schedutil" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 2.25 GHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes

After the first wake- up from sleep max frequency limit reduced to 1.92 GHz

$ cpupower frequency-info
analyzing CPU 0:
  driver: intel_cpufreq
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 20.0 us
  hardware limits: 800 MHz - 3.20 GHz
  available cpufreq governors: conservative ondemand userspace powersave performance schedutil
  current policy: frequency should be within 800 MHz and 1.92 GHz.
                  The governor "schedutil" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 1.90 GHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes

After the 2nd wake-up limit is reduced again to 1.2 GHz

$ cpupower frequency-info
analyzing CPU 3:
  driver: intel_cpufreq
  CPUs which run at the same hardware frequency: 3
  CPUs which need to have their frequency coordinated by software: 3
  maximum transition latency: 20.0 us
  hardware limits: 800 MHz - 3.20 GHz
  available cpufreq governors: conservative ondemand userspace powersave performance schedutil
  current policy: frequency should be within 800 MHz and 1.28 GHz.
                  The governor "schedutil" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 798 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes

Manual setting maximum frequency limit via

sudo cpupower set-frequency -d 3200000

or

echo 3200000 | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_max_freq

does not cause any changes.

alexxzero

Member

Registered: 2024-08-15

Posts: 2

Re: CPU frequency is reduced after resuming from suspend

I am experiencing the same issue on two of my laptops: an HP G10 Elitebook (i7-1355U) and an HP G9 Probook (i7-1255U). After suspending, the CPU clock speed is stuck at 0.4GHz for all cores. Rebooting does not resolve the issue; only hibernation or a complete power off/on cycle restores normal functionality (it seems a cold start is necessary, while a warm start does not help). Additionally, `cpupower set-frequency` fails to change the CPU frequency when it is stuck at a low clock speed, although it works as expected when the CPU is in normal mode.

liuyi

Member

Registered: 2024-08-21

Posts: 3

Re: CPU frequency is reduced after resuming from suspend

My laptop also encounters such an issue. My CPU is AMD Ryzen 7 8845HS. Restarting resolves the issue for me.

haekele

Member

Registered: 2026-08-15

Posts: 14

Re: CPU frequency is reduced after resuming from suspend

Same exact problem for me on my HP Spectre x360 16 f2013dx (7H0Z9UA). In my case it's only 300 MHz!

Last edited by haekele (2026-09-24 06:08:14)

mithrial

Member

Registered: 2017-03-05

Posts: 170

Re: CPU frequency is reduced after resuming from suspend

For me, replugging the power resets this. It always happens if I plug the power in during suspend.