I've tried 6.30.223.141+bdcom-0ubuntu1 and while I could see 5Ghz networks, both 2.5 and 5Ghz networks were unstable - connections dropping every 30s or so + ping slow..
Downgraded according to the mentioned instructions to 6.20.155.1+bdcom- 0ubuntu6 and it all works fine again. description: Wireless interface product: BCM4331 802.11a/b/g/n -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1189611 Title: bcmwl-kernel-source 6.30.223.30+bdcom-0ubuntu1 fails to see 5GHz networks and is unstable on 2.5GHz To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1189611/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs