The HDMI output of the Raspberry Pi is only activated if a monitor or television is connected and powered up before the Raspberry Pi is turned on. To correct this – edit the /boot/config.txt file Add the following two lines … Continue reading →
The following is a primer for setting up your Raspberry PI to use SNMP to monitor the CPU and the GPU temperature in Cacti. The instructions below cover both Raspian and Centos 7. I am assuming you are familiar with … Continue reading →
I used vcgencmd inside a script for SNMP and the SNMP query returned: VCHI initialization failed I soon discovered if vcgencmd on a raspberry pi you get VCHI initialization failed then you need to add the video group to that user. … Continue reading →