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If I shutdown my PC, then remove the connection to the socket and boot it again, the CPU runs at a minimum possible 480MHz. But if I then reboot it again, this time, without removing the socket, the frequency is normal. If you haven't understood yet:

  1. Shut my PC.
  2. Remove the socket connection.
  3. Reboot after a while.

Result: Frequency of 480MHz(which is the minimum possible) and very slow running and booting.

  1. Shut down the PC.
  2. Don't remove the socket.
  3. Reboot

Result: The frequency is back to normal.

Note that I have a laptop with a battery that doesn't work which needs to be constantly plugged in so that I can do my work.

OS: Ubuntu 16.04, 64 bit.
CPU: Intel(R) Celeron(R) CPU N3050 @ 1.6GHz
Product : Inspiron 14-3452 (06AC)
Max frequency: 2160MHz
Min frequency: 480MHz

Additional info:

Normal boot:

/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver:intel_pstate
/sys/devices/system/cpu/cpu1/cpufreq/scaling_driver:intel_pstate
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/intel_pstate/max_perf_pct:100
/sys/devices/system/cpu/intel_pstate/min_perf_pct:22
/sys/devices/system/cpu/intel_pstate/no_turbo:0
/sys/devices/system/cpu/intel_pstate/num_pstates:22
/sys/devices/system/cpu/intel_pstate/status:active
/sys/devices/system/cpu/intel_pstate/turbo_pct:33

Slow boot(480MHz):

/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver:intel_pstate
/sys/devices/system/cpu/cpu1/cpufreq/scaling_driver:intel_pstate
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/intel_pstate/max_perf_pct:100
/sys/devices/system/cpu/intel_pstate/min_perf_pct:22
/sys/devices/system/cpu/intel_pstate/no_turbo:0
/sys/devices/system/cpu/intel_pstate/num_pstates:22
/sys/devices/system/cpu/intel_pstate/status:active
/sys/devices/system/cpu/intel_pstate/turbo_pct:33
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  • When you say you "disconnet the socket" do you mean you the battery AC charger plug? Also not a fix but you can probably use this script to reset min/max CPU freq on the fly: askubuntu.com/questions/1057710/…
    – WinEunuuchs2Unix
    Apr 2, 2021 at 14:43
  • @WinEunuuchs2Unix You are right, I meant the charger plug. I knew I could just change the CPU frequency but the problem I am experiencing is not normal, something bigger must be wrong, so I am trying to better not mess up anything(so no one in the real world blames me, now that they will blame you, I may try it, if I have no choice, but it's kinda okayyy for now).
    – Shambhav Gautam
    Apr 2, 2021 at 14:54
  • The frequency controlled by Intel pstate can be hardware or software controlled. Also it can be overridden at boot time via grub or can be set in BIOS. There is an expert here in Ask Ubuntu on the subject and I will email him a link to your question.
    – WinEunuuchs2Unix
    Apr 2, 2021 at 17:21
  • 1
    Laptop brand and model number please. If the battery is broken, then likely BIOS is getting confused. Your workaround seems fine. Just don't unplug it if you don't have to. show us grep . /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver and grep . /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor and grep . /sys/devices/system/cpu/intel_pstate/* under both conditions.
    – Doug Smythies
    Apr 2, 2021 at 18:23
  • @DougSmythies Do I need to show these after the boot in which it runs at 480MHz, normal one, anyone, both or during the boot?
    – Shambhav Gautam
    Apr 3, 2021 at 2:22

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