On Tue, 16 Nov 2010, Don Zickus wrote: > Hi Sarah, > > So I was poking around with it more, using suggestions from Matthew > Garrett. > > After unplugging my harddrive (physically) and then echo 'auto' > > /sys/bus/pci/devices/<usb3 pci id>/power/control, it was working as > expected. IOW, it went to sleep after a couple of seconds. An lsusb woke > it up, then it went back to sleep. > > Physically plugging in the harddrive caused it to wake up again. > Everything mounted correctly. Matthew was saying the storage layer > doesn't have run-time power management so 'auto' won't work when the > harddrive is physically connected. Matthew is out of date; the storage layer now does have runtime-PM support. However it's easier to test if the storage layer isn't present. That's why Sarah asked you to rmmod usb-storage. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
