have the bcm4318 myself. this is a problem with the current kernel driver, it apparently has "major power issues". for this particular hardware you will need to use ndiswrapper for the moment.
workaround: add "blacklist bcm43xx" to /etc/modprobe.d/blacklist add "alias eth1 ndiswapper" and "alias wlan0 ndiswapper" to /etc/modprobe.d/ndiswrapper and ndiswrapper will need to be configured obviously. -- bcm43xx working partially https://launchpad.net/bugs/97469 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
