powertop_2.11-1build1_amd64.deb - should be in the PPM ( Fossapup64 & Jammypup64)
https://www.mediafire.com/file/n71pmbow ... 4.deb/file
Install the application and then in terminal do this first!!!
powertop --calibrate
This will run through some checks of your hardware ....... yes your screen will go off/on .............. just be patient.
Once completed you can 'auto-tune' and change individual item variables