dell 5520 not working on nm

[julien bresciani <julien bresciani free fr>]

Hi , I own a dell D420, and the integrated wwan 3G card doesnt work with
network manager 0.7 (ubuntu 8.10)
the device works flawlessly with wvdial script.

here is the output of lsusb and log relating to connection tries.

I checked with minicom before launching the connection that the network
is registered...




Bus 005 Device 003: ID 413c:8137 Dell Computer Corp. Wireless 5520 Voda
L Mobile Broadband (3G HSDPA) Minicard Status Port




Jan  8 11:52:07 ouin-laptop NetworkManager: <info>  Activation (ttyUSB0)
starting connection '3'
Jan  8 11:52:07 ouin-laptop NetworkManager: <info>  (ttyUSB0): device
state change: 3 -> 4
Jan  8 11:52:07 ouin-laptop NetworkManager: <info>  Activation (ttyUSB0)
Stage 1 of 5 (Device Prepare) scheduled...
Jan  8 11:52:07 ouin-laptop NetworkManager: <info>  Activation (ttyUSB0)
Stage 1 of 5 (Device Prepare) started...
Jan  8 11:52:07 ouin-laptop NetworkManager: <debug> [1231411927.093730]
nm_serial_device_open(): (ttyUSB0) opening device...
Jan  8 11:52:07 ouin-laptop NetworkManager: <info>  Activation (ttyUSB0)
Stage 1 of 5 (Device Prepare) complete.
Jan  8 11:52:07 ouin-laptop NetworkManager: <info>  (ttyUSB0): powering
up...
Jan  8 11:52:22 ouin-laptop NetworkManager: <WARN>
automatic_registration_response(): Automatic registration failed: not
registered and not searching.
Jan  8 11:52:22 ouin-laptop NetworkManager: <info>  (ttyUSB0): device
state change: 4 -> 9
Jan  8 11:52:22 ouin-laptop NetworkManager: <debug> [1231411942.493230]
nm_serial_device_close(): Closing device 'ttyUSB0'
Jan  8 11:52:22 ouin-laptop NetworkManager: <info>  Marking connection
'3' invalid.
Jan  8 11:52:22 ouin-laptop NetworkManager: <info>  Activation (ttyUSB0)
failed.
Jan  8 11:52:22 ouin-laptop NetworkManager: <info>  (ttyUSB0): device
state change: 9 -> 3
Jan  8 11:52:22 ouin-laptop NetworkManager: <info>  (ttyUSB0):
deactivating device (reason: 0).
Jan  8 11:52:22 ouin-laptop NetworkManager:
nm_system_device_flush_ip4_routes_with_iface: assertion `iface_idx >= 0'
failed
Jan  8 11:52:22 ouin-laptop NetworkManager:
nm_system_device_flush_ip4_addresses_with_iface: assertion `iface_idx >=
0' failed


here is the connection log from wvdial : successful :

--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Sending: AT+CGDCONT=1,"IP","three.co.uk";
AT+CGDCONT=1,"IP","three.co.uk";
OK
--> Modem initialized.
--> Sending: ATDT*99***1#
--> Waiting for carrier.
ATDT*99***1#
CONNECT HSDPA 3.6
--> Carrier detected.  Starting PPP immediately.
....blablabla and ppp starts ok

whats wrong with the registration detection in network manager , how can
i solve this problem?