The certificate authority is missing. You may want to add it to the configuration in NetworkManager to point to a CA certificate that can be provided to you by your network administrator:
Jan 24 21:28:21 ubuntu wpa_supplicant[3569]: wlan0: CTRL-EVENT-EAP-METHOD EAP vendor 0 method 25 (PEAP) selected Jan 24 21:28:21 ubuntu wpa_supplicant[3569]: TLS: Certificate verification failed, error 20 (unable to get local issuer certificate) depth 1 for '/C=SK/L=Bratislava/O=Comenius University/CN=WWW Servers Certification Authority/emailAddress=xxxxxxxxx' Jan 24 21:28:21 ubuntu wpa_supplicant[3569]: wlan0: CTRL-EVENT-EAP-TLS-CERT-ERROR reason=1 depth=1 subject='/C=SK/L=Bratislava/O=Comenius University/CN=WWW Servers Certification Authority/emailAddress=xxxxxxxx' err='unable to get local issuer certificate' Jan 24 21:28:21 ubuntu wpa_supplicant[3569]: SSL: SSL3 alert: write (local SSL3 detected an error):fatal:unknown CA Jan 24 21:28:21 ubuntu wpa_supplicant[3569]: OpenSSL: openssl_handshake - SSL_connect error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed Jan 24 21:28:22 ubuntu wpa_supplicant[3569]: wlan0: CTRL-EVENT-EAP-FAILURE EAP authentication failed I've noticed this too happening with self-signed certificates in universities. The alternative is to edit the connection file in /etc/NetworkManager/system-connections to remove "system-ca-certs=true". ** Changed in: network-manager (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1104476 Title: Network manager cannot connect to Eduroam (worldwide WiFi network for university students) Status in “network-manager” package in Ubuntu: Invalid Bug description: I can connect to Eduroam in 12.10 and any other previous release, but not in 13.04. I checked, my name and password are correct, all settings are the same as in 12.10. Network properties: security: WPA - WPA2 enterprise authentication: protected EAP (PEAP) CA certificate: none PEAP version: automatic inner autentication: MSCHAPv2 username: (required) password: (required) ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: network-manager 0.9.6.0+git201301021750.e78c3e8-0ubuntu3 ProcVersionSignature: Ubuntu 3.8.0-1.5-generic 3.8.0-rc4 Uname: Linux 3.8.0-1-generic i686 ApportVersion: 2.8-0ubuntu2 Architecture: i386 CasperVersion: 1.330 Date: Thu Jan 24 21:32:25 2013 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback IpRoute: default via 192.168.43.1 dev wlan0 proto static 169.254.0.0/16 dev wlan0 scope link metric 1000 192.168.43.0/24 dev wlan0 proto kernel scope link src 192.168.43.149 metric 9 LiveMediaBuild: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130123) MarkForUpload: True NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH AndroidAP 978da457-563b-4c59-a894-45eb0f74fcb7 802-11-wireless 1359063171 Thu 24 Jan 2013 09:32:51 PM UTC yes no /org/freedesktop/NetworkManager/Settings/2 Wired connection 1 6703fabc-9519-49bd-a4af-45fbfb7d660e 802-3-ethernet 1359062570 Thu 24 Jan 2013 09:22:50 PM UTC yes no /org/freedesktop/NetworkManager/Settings/1 eduroam 00f69a95-4a1b-436c-b462-a284f45fbaa1 802-11-wireless 1359063171 Thu 24 Jan 2013 09:32:51 PM UTC yes no /org/freedesktop/NetworkManager/Settings/0 nmcli-dev: DEVICE TYPE STATE DBUS-PATH wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/1 eth0 802-3-ethernet unavailable /org/freedesktop/NetworkManager/Devices/0 nmcli-nm: RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running 0.9.7.0 connected enabled enabled enabled enabled disabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1104476/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp