The icon in the tray does not show any wireless interfaces when I click on it. I know my adapter SHOULD work (Tenda W522U), but it does not appear to. I am running Raspbian Jessie. The output of commands is listed below.
lsusb
...
Bus 001 Device 004: ID 148f:3572 Ralink Technology, Corp. RT3572 Wireless Adapter
...
lsmod
...
rt2800usb 17802 0
rt2800lib 71907 1 rt2800usb
rt2x00usb 8553 1 rt2800usb
rt2x00lib 36744 3 rt2x00usb,rt2800lib,rt2800usb
mac80211 542174 3 rt2x00lib,rt2x00usb,rt2800lib
cfg80211 420690 2 mac80211,rt2x00lib
crc_ccitt 1161 1 rt2800lib
rfkill 16659 1 cfg80211
...
/etc/network/interfaces
auto lo
iface lo inet loopback
iface eth0 inet dhcp
allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp
/etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1