On Sat, Dec 19, 2009 at 6:44 PM, Florian Zumbiehl <florz@xxxxxxxx> wrote: > So, a base load of 3.8 W seems to be caused by any connected usb device > preventing C3 and some 250 ms polling done by uhci_hcd, plus a bit for > the device itself. According to > http://www.mail-archive.com/linux-usb-users@xxxxxxxxxxxxxxxxxxxxx/msg19354.html > (why aren't there any message IDs on any of those archive sites, BTW?) > that's the expected behaviour. Presumably power-management changes have a time granuarity i.e. if you make the CPU busy for one moment, it would stay in the higher-power state for a while before dropping down? That's the standard thing to do for prevent the power state being changed too often (and have bad effects of some sort)? -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html