b43 is broken

[ojab]

b43 fails to load if linux-backports-modules-cw-3.12-precise-generic is installed:
>Jun 24 20:06:00 client-england kernel: [ 6.409129] b43: Unknown symbol ssb_pmu_spuravoid_pllupdate (err 0)
>Jun 24 20:06:00 client-england kernel: [ 6.409286] b43: Unknown symbol bcma_core_pci_up (err 0)
>Jun 24 20:06:00 client-england kernel: [ 6.409310] b43: Unknown symbol ssb_bus_pcmciabus_register (err 0)
>Jun 24 20:06:00 client-england kernel: [ 6.409345] b43: Unknown symbol bcma_pmu_spuravoid_pllupdate (err 0)
>Jun 24 20:06:00 client-england kernel: [ 6.409357] b43: Unknown symbol bcma_core_pci_down (err 0)

lspci output can be found in the attached file.

$ lsb_release -rd
Description: Ubuntu 12.04.5 LTS
Release: 12.04
 apt-cache policy linux-backports-modules-cw-3.12-precise-generic linux-image-generic
linux-backports-modules-cw-3.12-precise-generic:
  Installed: (none)
  Candidate: 3.2.0.86.100
  Version table:
     3.2.0.86.100 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
linux-image-generic:
  Installed: 3.2.0.86.100
  Candidate: 3.2.0.86.100
  Version table:
 *** 3.2.0.86.100 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
        100 /var/lib/dpkg/status
     3.2.0.23.25 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
$ cat /proc/version_signature
Ubuntu 3.2.0-86.124-generic 3.2.69

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1468629

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.