isn't it a duplicate with https://bugs.launchpad.net/ubuntu/+source /network-manager/+bug/425455 ?
-- wireless network has problem connecting and sometimes disconnect https://bugs.launchpad.net/bugs/569841 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs