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I have two identical laptops one of them have win 7 and the other have Linux mint when I fuly charge the batteries and unplug the power source from both and check the battery time remaining win7 says 3 .15 hours remaining but the Linux says only 2 hours !!!! ps both are new laptops this is the first use and I had the same result even when I exchange batteries between them . Any ides?
Hw : i7 processors with 8 GB Ram
sw: win 7 64bit , Linux mint 11 64bit gnome 2
It might be just estimation flaw. Try to unplug and leave them for a little and see if the battery really drains faster. Or perhaps the battery itself is dying on the other one?
even for real usage windows consume power less than linux , iam trying to search maybe linux cant deal with the I7 technology thats designed to reduce processor speed as long as you dont need it just to save power.
May be you just have not activated it. Are the drivers for the Speedstep system loaded? Are you using the on-demand or power-save governor? Is there an extra video-chip in that laptop, and if so, which drivers are you using? Is the harddisk configured to spin down after a while?
Linuxkernel 2.6.38 (as used by mint 11) had power regressions.
AFAIK nVidia 'opitmus' setups will drain battery faster with linux than with windows, even if they have been setup right. When not setup right, not only will they use more power, they will also heat up the laptop more.
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