Can't connect to eduroam via `wpa_supplicant`:

I'm on my new Debian Stretch system and I'd like to connect to my university eduroam network. I'm not using GNOME or any DM, so I manage my connections via nmcli. However, from what I gather, it seems that nmcli doesn't support this kind of connections. Too bad. Then I decided to try with just wpa_supplicant and I found this configuration file which supposedly should work out of the box in most cases. But not for me. After editing the relevant parts, I tried with sudo wpa_supplicant -i wlp5s0 -c eduroam.conf And the output is something along these lines: Successfully initialized wpa_supplicant wlp5s0: SME: Trying to authenticate with 64:f6:9d:6a:bd:00 (SSID='eduroam' freq=2412 MHz) wlp5s0: Trying to associate with 64:f6:9d:6a:bd:00 (SSID='eduroam' freq=2412 MHz) wlp5s0: Associated with 64:f6:9d:6a:bd:00 wlp5s0: CTRL-EVENT-EAP-STARTED EAP authentication started wlp5s0: CTRL-EVENT-REGDOM-CHANGE init=COUNTRY_IE type=COUNTRY alpha2=ES wlp5s0: CTRL-EVENT-EAP-PROPOSED-METHOD vendor=0 method=21 -> NAK wlp5s0: CTRL-EVENT-EAP-PROPOSED-METHOD vendor=0 method=25 wlp5s0: CTRL-EVENT-EAP-METHOD EAP vendor 0 method 25 (PEAP) selected wlp5s0: CTRL-EVENT-EAP-PEER-CERT depth=2 subject='/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert Assured ID Root CA' hash=3e9099b5015e8f486c00bcea9d111ee721faba355a 89bcf1df69561e3dc6325c wlp5s0: CTRL-EVENT-EAP-PEER-CERT depth=1 subject='/C=NL/ST=Noord-Holland/L=Amsterdam/O=TERENA/CN=TERENA SSL CA 3' hash=beb8efe9b1a73c841b375a90e5fff8048848e3a2af66f6c4dd7 b938d6fe8c5d8 wlp5s0: CTRL-EVENT-EAP-PEER-CERT depth=0 subject='/C=ES/ST=Granada/L=Granada/O=Universidad de Granada/OU=CSIRC/CN=radius.ugr.es' hash=828fbec918c62256ea67a9737ac44b578a6b fb39ff2ef1d6f7cdb3eeea4db8b5 wlp5s0: CTRL-EVENT-EAP-PEER-ALT depth=0 DNS:radius.ugr.es EAP-TLV: TLV Result - Failure wlp5s0: CTRL-EVENT-EAP-FAILURE EAP authentication failed wlp5s0: Authentication with 64:f6:9d:6a:bd:00 timed out. wlp5s0: CTRL-EVENT-DISCONNECTED bssid=64:f6:9d:6a:bd:00 reason=3 locally_generated=1 wlp5s0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="eduroam" auth_failures=1 duration=10 reason=AUTH_FAILED and then it goes all over again. I don't really know what the EAP-TLV: TLV Result - Failure message means. I've tried to Google for some troubleshooting to no avail. As per the common advices: * I'm disabling NetworkManager before testing the connection * I'm making sure there is only one wpa_supplicant instance running