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powering off USB port after eject. was Re: Ipod issues



Kevin Kofler wrote, On 01/08/2009 10:39 PM:
Todd Zullinger wrote:
The iPod should be sent an eject rather than just a umount.

Well, really it's the iPod being weird. It doesn't make sense to "eject" a
USB device.

I'm pretty sure it's actually safe to disconnect the iPod once it is
unmounted, even if the firmware doesn't understand this.

        Kevin Kofler


On a somewhat related note...
Am I just working with too old a fedora here (F8, and no wise crack about it being EOL) to see it, or has the Linux kernel still not started powering off USB devices when 'ejected'? when I 'safely remove' a USB stick from a windows 2K|XP machine it appears that the power is removed from the the stick, i.e., the LED goes out and stays out on the stick. when I issue `eject` on a Linux machine the file system gets unmounted but the device still appears powered.

Or is there just some trick that MS is playing with the devices that tells the device 'shut off the LED'???

--
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter


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