SDIO WLAN support during sleep

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Guest

Windows Vista does not seem to support the SDIO based Wireless LAN cards
during standby/hibernate (S3/S4). Seems like Vista blocks the power supplied
to the device/bus during the sleep. Power should be supplied to the
bus/device if the wireless card need to support wake on feature.

Is it a bug or Windows Vista does not implement this support?

Any discussions/knowledge sharing/comments will be appreciated.
 
Sankara,

Two ideas: First, check BIOS and look for a power setting to enable "wake
on LAN" or words to that effect.

Second, check the Properties for the card in Device Manager to determine
whether it includes a Power tab where you select power options.

That's all I have. Others may have additional ideas.
 
Thanks freddy! I have tried those two options and posted the question in the
help forum only after that. 1) There is no word related to "wake on" in the
BIOS and 2) The power management tab is available in the device driver
properties. But the checkbox "Allow this device to bring the computer out of
standby" is disabled. And this does not happen for PCIe based Intel 3945ABG
wireless LAN card. There the power management tab and the above check box is
also enabled. So, wake on wireless lan works with the 3945 card. But, I have
a machine in which only SDIO support is there and I need to enable
Wake-on-WLAN for this card.

-sankar
 
Sankaara,

Well, that takes care of that. I'm now wondering whether a BIOS update
could provide the option you're looking for. There's something going on
that's causing the condition that you have, but I'm at a loss to explain what
it is. Could it be that the SDIO cards don't support this feature. We all
know that Vista supports all sorts of power options, but Vista isn't the only
player whens it comes to supporting power features. Vista can't enable a
device's feature that isn't there. Just another way of looking at it.
Anyone have information on this?
 
Sankara,

While looking for a solution, I found another thing try. It goes like this,
quote:

"In Windows, you'll need to configure the wake-up capabilities of your
network device. To do this, navigate to the Control Panel, double-click
Network Connections, right-click Local Area Network, and then choose
Properties. Your network adapter will be visible in the Properties box.

Click Configure and then navigate to the Advanced tab. Select Wake Up
Capabilities. Here you want to enable any wake-up options available. Choose
"both" or "Magic Packet & Pattern Match."

Next, choose the power Management tab and check "Allow this device to wake
the computer." Reboot your computer, and you'll be able to enter standby
mode, but your rig will still awaken when it detects incoming network
activity."

unquote

So, if this works for you, after this you should be all set. Report back on
results.
 
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