Mansome
Posts: 68
Joined: Sat May 16, 2015 2:32 pm

Pi has underclocked itself some how

Wed Dec 14, 2016 3:15 am

Hi all,

I noticed that my Pi 2 and Pi 3 are now both running at 600mhz instead of the 900 and 1.2 respectively. I only noticed this because kodi addons are taking some what longer load. To test this I installed another OS with kodi to see what is going on. In raspbian lite with kodi is where the problem is but OSMC and OpenElec show the right clock speed. I have never bothered the settings for overclocking on the Pi's until now when trying to fix the problem. If I do a raspi-config in Raspbian and go to the overclock section it says this Pi can't be overclocked when I know people do this all the time. Any idea what is going on?

tweak42
Posts: 503
Joined: Tue Mar 22, 2016 3:16 am
Location: Los Angeles, California

Re: Pi has underclocked itself some how

Wed Dec 14, 2016 3:51 am

Are you sure you are reading the correct clock speed?

Code: Select all

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
shows your current clock speed, but note, the cpu speed scales based on load, so you may need to run a load program to get the clock up to max speed.


Utility raspi-config changes the clocking options set in the config.txt file in the /boot directory, aka the boot partition on the sd card.
https://www.raspberrypi.org/documentati ... fig-txt.md

If there is a hash in front of the parameter, it's ignored and the default cpu speed should be applied.
For example:

#arm_freq=800

is ignored, but would set the max frequency to 800 if the leading hash is deleted.

Mansome
Posts: 68
Joined: Sat May 16, 2015 2:32 pm

Re: Pi has underclocked itself some how

Wed Dec 14, 2016 11:40 pm

I typed in what you stated and got 600000. So something is definitely up. The config.txt file is commented out on anything that is related to changing the pi's speed.

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