On Wed, Mar 22, 2017 at 02:42:19PM +0000, Kevin Chadwick wrote: > In case it is of any help to anyone. I tried 11n on a ar9271 a few weeks > ago and also an ar2133. Both would give athn0: device timeouts but the usb > ar9271 needed a ifconfig down up to recover whereas the card recovered by > itself. Using 11g made them far less likely and whilst I have hardly used > the 11b ssid, I haven't had any with 11b on the 9271 so far. > > Also after using 11n and getting multiple resets I had to plug the card > into another laptop to get the firmware to load again without saying could > not read ROM, even after reboots. So maybe some state is kept on OpenBSD or > more likely perhaps it was unplugged for long enough to clear the cards > memory or something.
There is a known issue which looks like ehci(4) on some USB host controllers does not feed sufficient power to athn(4) devices and then they won't work reliably.
