On my previous laptop I suffered with repeated over-heating problems whenever CPU load went high for a prolonged period. After several emergency shutdowns (performed by ACPI) I discovered the problem:
returned the result: “performance”
Inserting the following line before the ‘exit’ line in /etc/rc.local:
echo "conservative" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
resolved the problem.
For all available scaling governors: