Hello, powertop works like a charm - nearly a litte magic... I'm on a Debian 9.1, PowerTOP version v2.8, compiled on Nov  6 2015. "powertop --auto-tune" did a very good job, most "bad" signs changed to "good" Only a little bit remains - these three lines remain "bad" (in need of tuning): Energieverwaltung für Audiocodec aktivieren  echo '1' > '/sys/module/snd_hda_intel/parameters/power_save'; Zeitüberschreitung beim VM zurückschreiben  echo '1500' > '/proc/sys/vm/dirty_writeback_centisecs'; Wake-On-LAN-Status für Gerät enp0s25  ethtool -s enp0s25 wol d;  Web hits seem to be quite outdated.. - so: Where should I place the three commands above? Cheers, Wolf