shutdown -p doesn't power-off USB

[Polytropon]

On Sat, 31 Mar 2012 17:38:11 +0200, Jens Schweikhardt wrote:
> I'm running 9-STABLE/amd64 and for a few months now, whenever I shut
> down with "shutdown -p now", the USB devices still have power. This is
> most visible on the USB keyboard, where *all* LEDs are turned on and
> stay on.

That's not a bug, it's a feature. :-) Many mainboards allow
switching-on per keyboard. There's typically a toggle in
the board's CMOS setup. Maybe there's also an option to
turn USB power completely off. However, USB powered on
seems to be the default as soon as the machine's power
supply is on line.



> The MB is an ASUS P5Q3 Deluxe.

Also check its documentation, maybe USB power is mentioned?



> Any help appreciated in telling me how to turn off USB power with shutdown.

I don't think this is any option in the OS. You should check
this per hardware.



-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...