I found a problem related to this. I have 2 APs sharing a common SSID, the Ubuntu laptop insist on connecting to the AP downstairs, instead of the AP just 2 meters away! That's why it is so unstable.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1000208 Title: wifi network get disconnected periodically -- Realtek RTL8191SEvA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1000208/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs