I get what looks like a very similar problem on Karmic. I've found a workaround that works at the moment is to unload and reload the wireless driver like this:
sudo modprobe -r ath9k sudo modprobe ath9k Obviously, save your work before you try it in case it crashes your computer. -- Wifi network speed decreased after hibernation https://bugs.launchpad.net/bugs/404987 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