I experience the exact same issue after upgrading to 12.10 Beta2. I am using the latest kernel build at the time of this writing.
I have found two solutions that have worked for me: 1.) Downgrade to 12.04 LTS (WPA2 works fine in precise) 2.) Switch to WPA, rather than WPA2 on the AP. It is a compromise in security but in my case I am using a MAC filter and I created a separate WLAN SSID that uses WPA exclusively. 12.10 B2 seems to work with WPA just fine; with WPA2 it seems to fail at SSID PSK negotiation. I am still able to use TKIP and/or AES with WPA, just cannot use WPA2 (using TKIP or AES). The wireless interface I am using is a USB Belkin 54G, 12.10 B2 seems to be using the same driver that 12.04 LTS was using. I have tried to connect to other WPA2 SSID's using 12.10 B2 and I get consistent failure. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1052099 Title: Cannot connect to wireless To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1052099/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs