-- changing of /sys/module/cfg80211/parameters/ieee80211_regdom did not work--file gets rewritten at boot
-- attempting to uninstall crda, wireless-crda, wireless-regdb to fix
   apt-get purge crda wireless-crda wireless-regdb
-- purge of crda/regdb seemed to work
-- still having issues with USB port quitting after a certain amount of time (non-deterministic)
-- added 'modprobe g_multi' to /etc/init.d/gpio-monitor.sh to load module needed to enable USB OTG port as second USB