Raspberry Pi 4 8Gb version 2 / Raspberry Pi OS 32-bit / Mesa 7c81 / Gecko G540

Looks like you are not running a real time kernel.

what does:

uname -a

report?

Yes, that is not a real time kernel, you need PREEMPT-RT kernel

@PCW and @andypugh



I followed andypugh advice from  #253210 and used the raspberry pi image from post #238020.

I had to add WiFi access and a different terminal.  The image does have a terminal, but you can not copy and paste in it.

After adding Mesaflash from synaptic, I was able to follow your directions from this topic and other previously mention post.

I now have two Raspberry Pi 4B 8Gb (vesion 1.4 and version 1.5) working

Thank you for your support.