Having issues with your DietPi installation or found a bug? Post it here.
Like I said, I'm using an old laptop and it's battery free. It seems that the low CPU frequency is a hardware limitation when the laptop can't charge the battery (my case). Maybe there is a software solution to solve this problem?
I think I've found the cause. CPU frequency starts dropping when the temperature rises above 48 degrees, but the fan in the laptop begins to run only after 60 degrees. So I either need to get the fan running before the processor starts to heat up, or disable BD_Prochot.
Yes. Until the processor temperature rises to 47 degrees Celsius, everything works as it should. When the temperature rises above 48, I literally watch the CPU frequency drop to 450.
pwmconfig: There are no pwm-capable sensor modules installed
So, i tried to boot from ssd with win7 to update the bios, but accidently forgot to change boot order and booted from SD with DietPi. And guess what??? CPU frequency not dropping down any more. To check that is really true, i have installed old 80GB hdd and again booted on to DietPi, and CPU frequency was totally fine.
What was that, weird bug?