TLP

Something is wrong with power governor then. I have an opposite experience, was able to tune Linux on a Core Ultra 155H laptop so it works longer than Windows one. Needed to use kernel 6.11+ and TLP [0] with pretty aggressive energy saving settings. Also played a bit with Intel LPMD [1] but did not notice much improvement. [0] https://github.com/linrunner/TLP [1] https://github.com/intel/intel-lpmd

With regard to Power Management TLP may be useful for people who run Linux on laptops TLP – Linux Advanced Power Management http://linrunner.de/tlp https://github.com/linrunner/TLP Laptop Mode Tools is the then standard way of power saving, not sure if it is obsolete now. https://github.com/rickysarraf/laptop-mode-tools In addition, Intel's PowerTop and other stuff on 01.org can also be useful if running on Intel architecture (GPU). I had been running Ubuntu 8.04, 10.04 12.04 on Dell Latitude D630 and E6410 (suspend to memory worked fine `pm-suspend` and then `systemctl suspend`) for several years, during that period of time laptop mainly sat on docking station as a desktop so I couldn't care less about power management, performance was first priority (e.g. no HDD spin-down `hdparm -B 254 /dev/sdX`, no swap devices, vm.swappiness=1 etc...