Comment 68 for bug 1768976

Followed instructions from #67.

Running 'cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver' to check for frequency scaling driver shows 'acpi-cpufreq' instead of 'intel_pstate', even *before* adding 'intel_pstate=disable' to /etc/default/grub.

After adding 'intel_pstate=disable' to /etc/default/grub and rebooting, 'cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver' shows 'acpi-cpufreq' as frequency scaling driver, too.

In my case, using kernel 4.15.0-45-generic, 'intel_pstate' frequency scaling driver has never been shown as active, yet the processor overheating continues.

My laptop's processor is an Intel i5-540M @ 2.53GHz, to be precise:
https://ark.intel.com/en/products/43544/Intel-Core-i5-540M-Processor-3M-Cache-2-53-GHz-

Video is NVidia Quadro NVS3100M with binary driver 340.107:
https://www.nvidia.com/object/nvs_techspecs.html