The Industrial Raspberry Pi Forum

I have a problem with the CPU in my project
The CPU is blocked, this sometimes happens with long intervals.
All programs then no longer work, ping ip address does not provide an answer from the kunbus

My question:
-Is there a logfile available where I can see the history of the CPU?
-Can the blocking of the CPU come from server upgrade actions ?, does anyone have similar experiences?

Dear AvL, please check if your system is up to date as we have released the Stretch Image 03/2019 see here: https://revolution.kunbus.de/shop/en/stretch
You can verify the version with There is much information available in the following sources:
If you have a kernel freeze there may be no entry in the "kern.log" but the last what you can get is a stack trace on the HDMI output.
So you may consider connection a monitor an see if there is for example a kernel stack trace. If so then you can make a photo and post it here.