Thank you, @matzipan. I also had this problem since upgrading to kernel 4.4 on linux mint 17.3 (ubuntu 14.04.03 derivative). Removing `laptop-mode-tools` fixed it instantly for me, as well.
Good luck! -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-nettool in Ubuntu. https://bugs.launchpad.net/bugs/1311257 Title: Wifi cannot connect or unstable after suspend 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-nettool/+bug/1311257/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs