I have this issue on a MacBook Pro 5,1 but only when connecting to the 5GHz portion of a dual-band access point. My card is:
04:00.0 Network controller: Broadcom Corporation BCM4322 802.11a/b/g/n Wireless LAN Controller (rev 01) -- [Lucid] Network Manager Applet Wi-Fi icon always shows red exclamation mark https://bugs.launchpad.net/bugs/539300 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