On Sat, 13 Feb 2016 11:17:31 -0800, Luke wrote: > > I searched the wiki on 'USB power' but noticed only sections 4 and 10 of > > https://wiki.freebsd.org/TuningPowerConsumption seemed to relate at all. > > If that's it or not, I'd appreciate some more guidance ..
> That's correct, section 10 from that wiki page. > Here's all I did: > > $ sudo usbconfig > (it then lists all USB related devices) > $ sudo usbconfig -d 1.3 power_save > (then put a device into powersave mode. I put this in a script) > > and that was it for me. The zenbook almost imediately reports an extra > hour of battery and I can confirm it does indeed extend it's life to > close to an hour. Ah, right. Mine (6 uhci and 2 ehci root hubs) are all already in pwr=SAVE mode, except for the so far unused webcam: ugen3.2: <product 0x480c Chicony Electronics Co., Ltd.> at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (100mA) Setting that to power_save saved about 150mW, or 30mA at 5V. Only a few extra minutes (~2%) of battery life, but every little bit helps, thanks. Not that that's really anything to do with the $subject .. cheers, Ian _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-acpi To unsubscribe, send any mail to "[email protected]"
