Re: Fighting for the power.
Alexander Motin <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.mobile,gmane.os.freebsd.devel.acpi,gmane.os.freebsd.current |
|---|---|
| Message-ID | <[email protected]> |
Adam McDougall wrote: > On Mon, May 04, 2009 at 01:18:14AM +0300, Alexander Motin wrote: > > I would like to summarize some of my knowledge on reducing FreeBSD power > consumption and describe some new things I have recently implemented in > 8-CURRENT. The main character of this story is my 12" Acer TravelMate > 6292 laptop with C2D T7700 2.4GHz CPU, 965GM chipset and SATA HDD, under > amd64 8-CURRENT. > > Great list! May I suggest screen brightness and DPMS as another tool > to save power, I've measured a 5W difference from the screen draw. > Keeping the brightness as low as tolerable helps considerably, but > also using 'xset dpms 120 120 120' (modify to taste) in .xinitrc to > turn off the screen after 2 minutes helps when the laptop isn't being > used every second. May need this in xorg.conf: > Option "dpms" Yes, backlight is also important. But there is not so much things could be done. When I am leaving system for some time, I can just close the lid, if not put system into S3 state, which require very small power (at least I was unable to really measure it without all-day-long testing). Thanks to jkim@ we have more or less working S3 state for amd64 now. -- Alexander Motin _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-mobile To unsubscribe, send any mail to "[email protected]"