I had to replace my motherboard today. The new one is the same as the old one, so when these things stopped working I was a little surprised.
The following System Information Performance statistics graphs still work and continue to have updated data:
Network Interfaces eth0 traffic
OMV Sensors | CPU Temp
The following graphs stopped gathering new data:
CPU usage
Disk usage
Load average
Memory usage
Any hints on how to fix this? I don't care about the old data so starting fresh is not a problem.