At work I tested on my other laptop ( a newer T520) that is still Wheezy.
Running: wpa_supplicant -iwlan0 -dd -c wpa.conf seems to show that at least
on the version in Wheezy, the default is to use the wext driver. I forced
it to use nl80211 with: wpa_supplicant -iwlan0 -dd -Dnl80211 -c wpa.conf
Using nl80211 worked fine on this laptop with the following card:
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205
[Taylor Peak] (rev 34)
Subsystem: Intel Corporation Centrino Advanced-N 6205 AGN
So still not sure where the issue lies with wireless not working on my T61.
Perhaps hardware or perhaps wpa_supplicant (still haven't fully figured out
how the two interact). I suppose to see if this is not a regression, I'll
try and get a Wheezy live CD and boot my T61 with it and see if the card
works in nl80211 mode from that.
--Sam
