Is there a dedicated graphics processor or switchable graphics in this notebook?
This might explain the rather big difference in battery time since many Linux graphics drivers are not power-optimized and switchable graphics does not work. [1]
Anecdotally, my rather old notebook (Fujitsu-Siemens Amilo Pro V3205) runs cooler, quiter and longer when using Linux compared to Windows Vista. I still get slightly more than 2 hours out of my battery (3000mAh left). Maybe this is less of a problem with older, well supported hardware.
Anecdotally, my rather old notebook (Fujitsu-Siemens Amilo Pro V3205) runs cooler, quiter and longer when using Linux compared to Windows Vista. I still get slightly more than 2 hours out of my battery (3000mAh left). Maybe this is less of a problem with older, well supported hardware.
[1] But people are working on it, see e.g. https://github.com/MrMEEE/bumblebee