Create Root CA (Done once)
Create Root Key
Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!
openssl genrsa -des3 -out rootCA.key 4096
My Thinkpad T400s kept shutting down when it was busy doing CPU intensive work. It turns out that the fan did not speed up to a high enough level to cool down the CPU, and I’d find messages in /var/log/messages stating that the CPU was dangerously hot.
The first thing I did was to make it possible to manually control the fan speed. In order for this to work, the thinkpad_acpi kernel module needs to be loaded with a specific parameter. This can be