Re: USB suspend/remote wakeup on Vista vs. XP

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Ditto - I was also waking the system from sleep earlier with a mouse click,
and I have the checkbox enabled for that device. What I was actually trying
to do was compare the operation of my device with e.g. the eHome IR
receiver, to look for any differences in the WaitWake behaviour - that
device won't wake from Sleep though, it seems.
The Power Options control panel has at least got over the lack of settings
persistence - maybe MS have a good reason for disabling this by default.
Still can't get the full wait-wake wakeup, however, which is my key problem
right now. Once I've got to the bottom of that I'll re-visit all the
'setting disabled'-type scenarios to ensure graceful behaviour.

"Walter Oney" <waltoney@xxxxxxxxxxxx> wrote in message
news:46C316AF.71289C7@xxxxxxxxxxxxxxx
Colin H wrote:
Mind you - "Allow this device to wake the computer" is greyed out on all
my
root hubs. Is this preventing the wake?

Probably not. I just tried an experiment on my vista-64 system. The
hub's wakeup option is grayed out, just like you said. The wakeup option
is, however, available for my USB mouse. I verified that a mouse click
will wake the system. I would think that the hub needn't independently
support wakeup because there isn't any way for a user to goose just the
hub. So, I would guess that the hub driver doesn't support the
wakeup-enable WMI guid, which would result in having the option grayed
out.

As far as having the power-management options not persist across a
reboot, a possible cause (and I'm just guessing here) is that the driver
doesn't remember the setting in the registry so as to be able to restore
it. This should be okay in the grand scheme of things because most users
won't ever need to reboot. Still, the same group of "most users" will
also be unable to remember how they got the power setting changed in the
first place. Or, it could just be a mistake.

--
Walter Oney, Consulting and Training
http://www.oneysoft.com


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