tester@tester:~$ lsmod | grep 'firewire\|1394'
firewire_ohci 21530 0
firewire_core 34629 1 firewire_ohci
crc_itu_t 1015 1 firewire_core
That's correct. The firewire modules are loaded. raw1394 was part of the legacy firewire stack, and has been removed from the kernel as of v2.6.35. Also, 'sudo' isn't there in AVLinux either, that's an Ubuntu thing. (You can enable sudo in AVLinux if you want to but that's a different subject.) You'll either need to use 'gksu', the root terminal in the accessories menu, or 'su' to change to root in your terminal.
On the legacy firewire stack, I needed to plug my firewire device in before booting. On the new firewire stack, it seems to be the opposite (at least it did when audio support on the new firewire stack was still experimental). Try fully booting your computer before plugging in your firewire device.
For more troubleshooting, use these commands:
If ListDevices and Discover show your firewire device, the next place to look would be your Jack settings.