On 03/19/10 08:10, Andrew Henry wrote: > Before I got my UPS Powertop was always in the green, but now I just > cannot get there because the UPS is causing the USB to be polled > quite often: > > A USB device is active 4.5% of the time: USB device 7-1 : Back-UPS > ES 550 FW:828.D2.I USB FW:D2 (APC) > > I can enable usb power mgmt by pressing U but it does not have any > effect, because the UPS keeps polling so often. I understand that > this is a pure UPS issue, but does it really need to poll so often? > Anyone know of a way to stop it polling so often or would this break > the UPS's function?
this depends on the driver, is this an open source kernel or user space driver? if so, perhaps the polling frequency can be lowered. Auke _______________________________________________ Power mailing list [email protected] http://www.bughost.org/mailman/listinfo/power
