Arduino Yun - Unable to Connect to WPA2-Enterprise

Few things could help you:

  1. Connect Yun while wire network (ethernet), and ssh to console.

  2. Use Linux laptop ( or live CD to boot ) setup WIFI

  3. Install CA into Yun (in case trust server is public signed).

opkg update
opkg install ca-certificates
  1. Copy CA certificate file and config setting from Linux box.
eap_type (none) Defines the EAP protocol to use, possible values are tls for EAP-TLS and peap or ttls for EAP-PEAP
auth MSCHAPV2 "auth=PAP"/PAP/MSCHAPV2 - Defines the phase 2 (inner) authentication method to use, only applicable if eap_type is peap or ttls
identity (none) EAP identity to send during authentication
password (none) Password to send during EAP authentication
ca_cert (none) Specifies the path the CA certificate used for authentication

https://wiki.openwrt.org/doc/uci/wireless