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.
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1027587
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.