The mistake was that the debian installer configured my /etc/network/interfaces so that it only connects to the installer network and nothing else (I installed ubuntu via wlan) ... network manager does not like this setting.
By clearing it, now works fine. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/838352 Title: [Vostro 3550] AR9285 unable to connect to wifi networks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/838352/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs