I have the same problem with a plug in PCI card with the VIA chipset. Card is recognised but not initialised.
Linux Ubuntu1 2.6.32-41-generic #91-Ubuntu SMP Wed Jun 13 11:44:43 UTC 2012 i686 GNU/Linux Don't know if this gives a clue: grep firewire /var/log/kern.log Jul 14 09:58:46 Ubuntu1 kernel: [ 0.899162] firewire_ohci 0000:01:06.0: PCI INT A -> Link[LNKB] -> GSI 19 (level, low) -> IRQ 19 Jul 14 09:58:46 Ubuntu1 kernel: [ 0.976015] firewire_ohci: Added fw-ohci device 0000:01:06.0, OHCI version 1.10 Jul 14 09:59:39 Ubuntu1 kernel: [ 77.224612] firewire_core: created device fw0: GUID 001106660000670a, S400 Jul 14 10:00:38 Ubuntu1 kernel: [ 136.838141] firewire_core: skipped bus generations, destroying all nodes Jul 14 10:00:39 Ubuntu1 kernel: [ 137.336063] firewire_core: rediscovered device fw0 Jul 14 11:21:18 Ubuntu1 kernel: [ 2842.012046] firewire_core: skipped bus generations, destroying all nodes Jul 14 11:21:18 Ubuntu1 kernel: [ 2842.512021] firewire_core: rediscovered device fw0 Jul 14 15:30:42 Ubuntu1 kernel: [ 6827.940046] firewire_core: skipped bus generations, destroying all nodes Jul 14 15:30:42 Ubuntu1 kernel: [ 6828.440024] firewire_core: rediscovered device fw0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/890539 Title: Ext Firewire drive no longer mounts - FW driver not loaded To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/890539/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs