Comment 9 for bug 1252667

The new nvidia-prime works fine here. The pci address is treated as hexadecimal as expected.

:~$ apt-cache policy nvidia-prime
nvidia-prime:
  Installed: 0.5~hybrid0.0.2
  Candidate: 0.5~hybrid0.0.2
  Version table:
 *** 0.5~hybrid0.0.2 0
        400 http://archive.ubuntu.com/ubuntu/ precise-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     0.4.2~hybrid0.0.1 0
        500 http://it.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages