Sorry, I was confusing both comments. Configuring iwconfig options is not within the scope of NetworkManager. It, in fact, does not even use iwconfig. Asking for that is a bit of a "catch-all," and doesn't really come a feature point. (Imaginary response from upstream: if you want to call iwconfig, just type it at your terminal)
Now, with regards to power management and the actual problem you're having, I don't know if power management is really in the stated scope of NetworkManager; however, I have opened and associated an upstream bug with your original text. Good luck. :-) In the meantime, what I can recommend is adding a script in /etc/network /if-up.d/ or /etc/network/if-pre-up.d/ to ratchet down your power level after association. Does that help? ** Changed in: network-manager (Ubuntu) Status: Rejected => Confirmed ** Bug watch added: GNOME Bug Tracker #359584 http://bugzilla.gnome.org/show_bug.cgi?id=359584 ** Also affects: network-manager (upstream) via http://bugzilla.gnome.org/show_bug.cgi?id=359584 Importance: Unknown Status: Unknown -- Network manager doesn't allow configuration of wireless options https://launchpad.net/bugs/56445 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs