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[aubergine <dominiks.mail@xxxxxxx>]

Same issues with that kernel.

The latest kernel which works with my MacBook WLAN Card is:
https://launchpad.net/ubuntu/precise/+source/linux-lts-quantal or all
older kernel releases. This kernel is not affected by the Sandybridge
bugs or WLAN bugs.

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https://bugs.launchpad.net/bugs/1174347

Title:
  14e4:4331 Broadcom BCM4331 unusable with Raring kernel 3.8.0-19

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I'm using a MacBookPro 8.1 with BCM4331 and it's linux driver b43.
  After upgrading to Ubuntu Raring with kernel 3.8.0-19 my wirless network device is nearly unusable.

  List of issues:
  - After suspend the wireless network connection doesn't go online again. The known network isn't found without changing the distance to the wireless network router.
  - Sometimes after reboot the wireless network connection doesn't go online without changing the distance or place
  - iwlist scanning shows only 25% or less of all physical available networks. Wireless network performance is bad.

  I'm using the old kernel 3.5.0-27 from Quantal Quetzal again and the
  wirless network is working fine again. None of the issues above are
  present.


  ---
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  username      2282 F.... pulseaudio
  DistroRelease: Ubuntu 13.04
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=75279a36-a90a-4c40-9a0e-c440e5080a88
  InstallationDate: Installed on 2012-11-26 (154 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MachineType: Apple Inc. MacBookPro8,1
  MarkForUpload: True
  Package: linux 3.8.0.19.35
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-19-generic root=/dev/mapper/ubuntu-root ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-19-generic N/A
   linux-backports-modules-3.8.0-19-generic  N/A
   linux-firmware                            1.106
  Tags:  raring
  Uname: Linux 3.8.0-19-generic x86_64
  UpgradeStatus: Upgraded to raring on 2013-04-27 (2 days ago)
  UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo video
  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-94245B3640C91C81
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro8,1
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-94245B3640C91C81
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP81.88Z.0047.B27.1201241646:bd01/24/12:svnAppleInc.:pnMacBookPro8,1:pvr1.0:rvnAppleInc.:rnMac-94245B3640C91C81:rvrMacBookPro8,1:cvnAppleInc.:ct10:cvrMac-94245B3640C91C81:
  dmi.product.name: MacBookPro8,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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