This is solved in 14.04 and 14.10. I am able to connect to both 5GHz and 2.4GHz netowrks at 802.11n speeds without any problems.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1027587 Title: 14e4:4331 Cannot connect to 802.11n networks with Broadcom 4331 Status in The Linux Kernel: New Status in “linux” package in Ubuntu: Triaged Bug description: In 12.04 there is no support for 802.11n for BCM4331 found in MacBook Pro 8,2 and 8,3. 802.11g is supported with the b43 driver. Currently the brcmsmac driver does not support BCM4331 at all (it is listed in the todo: http://linuxwireless.org/en/users/Drivers/brcm80211) Some more info available here: http://www.spinics.net/lists/linux-wireless/msg88025.html --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: niklas 1575 F.... pulseaudio /dev/snd/controlC0: niklas 1575 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xb0900000 irq 47' Mixer name : 'Cirrus Logic CS4206' Components : 'HDA:10134206,106b2700,00100302' Controls : 24 Simple ctrls : 10 Card1.Amixer.info: Card hw:1 'Generic'/'HD-Audio Generic at 0xb0840000 irq 48' Mixer name : 'ATI R6xx HDMI' Components : 'HDA:1002aa01,00aa0100,00100200' Controls : 6 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] DistroRelease: Ubuntu 12.04 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301) MachineType: Apple Inc. MacBookPro8,3 Package: linux (not installed) ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=sv_SE.UTF-8 SHELL=/bin/bash ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-26-generic root=UUID=c583e318-a8a1-475c-8535-8165cafac1e2 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19 RelatedPackageVersions: linux-restricted-modules-3.2.0-26-generic N/A linux-backports-modules-3.2.0-26-generic N/A linux-firmware 1.79 SourcePackage: linux StagingDrivers: mei Tags: precise staging precise staging Uname: Linux 3.2.0-26-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 01/24/12 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP81.88Z.0047.B27.1201241646 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-942459F5819B171B dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro8,3 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-942459F5819B171B dmi.modalias: dmi:bvnAppleInc.:bvrMBP81.88Z.0047.B27.1201241646:bd01/24/12:svnAppleInc.:pnMacBookPro8,3:pvr1.0:rvnAppleInc.:rnMac-942459F5819B171B:rvrMacBookPro8,3:cvnAppleInc.:ct10:cvrMac-942459F5819B171B: dmi.product.name: MacBookPro8,3 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1027587/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp