Seems like this is an issue with the driver rather than wpasupplicant -- looks like it only really happens after you disable and re-enable networking/wifi:
wpa_supplicant[970]: Association request to the driver failed Can you confirm this? If so, then this bug report should be assigned to the 'linux' package instead. Thanks! ** Changed in: wpasupplicant (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/689007 Title: Cannot connect to some unsecured public wifi networks -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs