I have a new ThinkPad. It’s nice and shiny. It comes with Windows 7, so I installed Ubuntu 11.10.
The snazzy Broadcom Corporation BCM43224 802.11a/b/g/n [14e4:0576] wireless card did not work out of the box in Ubuntu. This is odd, because Broadcom provides open source drivers and Ubuntu has built them and packaged them very nicely.
So, to make everything work, I added the following lines to /etc/modprobe.d/blacklist.conf:
blacklist acer-wmi blacklist b43 blacklist ssb blacklist bcma
I don’t know how many of these lines were necessary, but I know for certain that the acer-wmi kernel module needs to be disabled. You will need to reboot the computer so that these changes will be applied (or manually turn off the modules listed above using rmmod).