Just switch from fedora to opensuse leap and CPU is running at high frequency 3.5ghz even in idle according to powertop. I solved the problem by installing backport kernel from https://software.opensuse.org//download.html?project=Kernel%3Astable%3ABackport&package=kernel-default not at idle CPU is running at 800mhz as expected. My question is why CPU is running at high freq in default kernel? Can anyone help me please?
Regardless I plan to continue to use opensuse as it is faster and stable than fedora.
My PC configuration:
Intel i5 4690
Gigabyte z97-d3h
8gb dd3
Integrated Graphics
**intel_cpufreq in backport kernel 5.11.16-lp152.3.ge06d321-default
here’s cpupower frequency-info output
sudo 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 - 3.90 GHz
available cpufreq governors: ondemand performance schedutil
current policy: frequency should be within 800 MHz and 3.90 GHz.
The governor "schedutil" may decide which speed to use
within this range.
current CPU frequency: Unable to call hardware
current CPU frequency: 1.38 GHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes
Thank you it is working as expected in default kernel after disabling intel_pstate driver
here is cpupower output
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us
hardware limits: 800 MHz - 3.50 GHz
available frequency steps: 3.50 GHz, 3.50 GHz, 3.30 GHz, 3.10 GHz, 2.90 GHz, 2.70 GHz, 2.50 GHz, 2.30 GHz, 2.10 GHz, 2.00 GHz, 1.80 GHz, 1.60 GHz, 1.40 GHz, 1.20 GHz, 1000 MHz, 800 MHz
available cpufreq governors: ondemand performance schedutil
current policy: frequency should be within 800 MHz and 3.50 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency: 800 MHz (asserted by call to hardware)
boost state support:
Supported: yes
Active: yes
sh-4.4$