How to disable USB powering for sleep mode while on AC? Settings for each controller or each device would be nice, but I'm glad to see even a global setting.
If on AC, after my Ubuntu turns asleep it leave an USB hub (without external power to hub) powered which makes a mouse and a keyboard dragging current (well, not much but furthermore LED lights are annoying). It is not needed since I'm not going to use keyboard or mouse when system is sleeping and not reasonable since no mouse nor keyboard usage wakes the system up.
In asleep mode while not on AC, hub is powered off (desired situation!) so I'm doing a lot of plugging in and out (not desired situation!).