OK, I just found your workaround here YAFU https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1442908/comments/4 This fixed the problem for me too, as wifi is stable using wicd it definitely seems to be a NetworkManager problem.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1444226 Title: [Kubuntu 15.04 beta] can't connect to wifi with Ralink RT2561/RT61 and NetworkManager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1444226/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs