A HAL change was required too, perhaps because the device doesn't use
any standard USB interface subclass descriptors.

Note, however, that `lsusb' does recognise the device as a Novatel
Wireless HSDPA modem.

I'm a bit worried about this, actually. Both my N95-3 and my built-in
HSDPA devices I had required HAL changes to get them to work, and the
built-in HSDPA needed a kernel change too. Both were already supported
in every way except that they lacked product ID listings. I really hope
there's a better way to recognise these devices than product ID
listings.

Also, before the release of Intrepid, it strikes me as a good idea to
borrow the code from the usbserial kernel module that lets it take a
vendor and product ID as module arguments, and add that to option.c as
well. That way Ubuntu users won't have to rebuild and repackage their
kernel to get the option driver to recognise their GSM/UMTS/HSDPA modem.
I may submit a hack-job patch for this myself, but holding your breath
in wait could be unwise.

Some documentation on what to do to get your modem to work would also be
wise. Even a quick tip like:

----
If your modem isn't detected by NetworkManager, you may be able to get it 
working by forcing the `option' driver to recognise your modem. Use `lsusb' to 
find out the vendor and product IDs for your modem, then run:

rmmod option
modprobe option vendor=0xdead product=0xbeef

(where 0xdead is your vendor ID, and 0xbeef is your product ID).

Check dmesg to see if the option driver recognised your device and
created one or more USB tty devices (/dev/ttyS0 etc) for it.

Now you need to modify HAL's policy to get HAL to recognise the device as a GSM 
modem and tell NetworkManager about it. I'm not sure about the cleanest way to 
tell a user to do this safely by ading policy in /etc/hal/fdi .
----

Anyway... with the patch to hal's FDI information and the option.c
change this device now works fine. It's just a pity it takes a kernel
rebuild and digging around in the HAL config.

** Attachment added: "HAL change required to get this modem to work"
   http://launchpadlibrarian.net/17177259/10-modem.fdi.diff

-- 
0.7 3G: Dell 5520 Mobile Broadband not detected
https://bugs.launchpad.net/bugs/262498
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