Is there any method to automatically switch the N900's wireless radio (WLAN) to full power (No Power Save) when it is charging?

The goal would be to normally have the Wi-Fi run on Power Save mode, but switch to Full Power when it is plugged in to a charger, and then switch back to Power Save when unplugged.

Perhaps even a method to automatically turn on Wi-Fi when it's charging and turn it off when it's on battery would be a good start.

Any thoughts are welcome.

You can pull this off using dbus-scripts. Something like;

* * com.nokia.bme.signal charger_charging_on will be your trigger event.

Get your Internet Access Point ID by using;

gconftool -R /system/osso/connectivity/IAP

and connect to, after replacing IAP_ID, using;

dbus-send --system --type=method_call --dest=com.nokia.icd /com/nokia/icd com.nokia.icd.connect string:"IAP_ID" uint32:0

As for automatically changing the power, I'm sure there's a dbus call for it, but you can do so using

iwconfig wlan0 txpower 100mW or 10mW to adjust it up or down.

Thanks for the detailed response, I'll give this a shot.