Re: Bluetooth and rfcomm GPRS modem init failure

[Darren Albers <dalbers gmail com>]

On Thu, Apr 16, 2009 at 11:15 AM, Julian Rush <julianrush70 yahoo co uk> wrote:
> Hello all
>
> Can you help with an issue with my DUN Bluetooth connection to my phone
> please?  I'm running Eeebuntu, a variant of Ubuntu Interpid, on an EeePC
> 901; I have Bluez 4.30 from the Blueman PPA and NM is
> 0.7-ubuntu1~nm1~intrepid1 from the NM PPA.  Phone is a Blackberry 8100.
>
> Bluez works fine - it creates /dev/rfcomm0 which is detected by NM and the
> wizard works to set up my GPRS Mobile Broadband connection with the correct
> details.  I can connect manually using gnome-ppp but when I try through NM
> the network is disconnected immediately and the log says 'Modem
> initialization failed'.
>
> It seems the modem is rejecting the +FCLASS=0 command in the init string.
> After searching this mailing list, where there have been similar reports, I
> restarted NM with NM_SERIAL_DEBUG set.  It reveals that the modem initially
> rejects the init string, accepts the alternate string without +FCLASS=0 and
> the next AT+CPIN? command but then, for some reason, NM re-sends the init
> string that had been rejected earlier, causing the initialization failure.
>  Testing tells me the +FCLASS is not supported by the Blackberry's modem.
>
> Here's the log (annotated):
>
> [Bluetooth DUN connection made]
> NetworkManager: <info>  rfcomm0: driver is 'rfcomm'.
> NetworkManager: <debug> [1239809500.110849] setup_monitor_device(): No
> monitoring udi provided
> NetworkManager: <info>  Found new Modem device 'rfcomm0'.
> NetworkManager: <info>  (rfcomm0): exported as
> /org/freedesktop/Hal/devices/rfcomm0
> NetworkManager: <info>  (rfcomm0): device state change: 1 -> 2
> NetworkManager: <info>  (rfcomm0): deactivating device (reason: 2).
> NetworkManager: nm_system_device_flush_ip4_routes_with_iface: assertion
> `iface_idx >= 0' failed
> NetworkManager: nm_system_device_flush_ip4_addresses_with_iface: assertion
> `iface_idx >= 0' failed
> [Starting mobile broadband connection]
> NetworkManager: <info>  (rfcomm0): device state change: 2 -> 3
> NetworkManager: <info>  Activation (rfcomm0) starting connection 'Vodafone
> GPRS'
> NetworkManager: <info>  (rfcomm0): device state change: 3 -> 4
> NetworkManager: <info>  Activation (rfcomm0) Stage 1 of 5 (Device Prepare)
> scheduled...
> NetworkManager: <info>  Activation (rfcomm0) Stage 1 of 5 (Device Prepare)
> started...
> NetworkManager: <debug> [1239809517.895192] nm_serial_device_open():
> (rfcomm0) opening device...
> NetworkManager: <info>  Activation (rfcomm0) Stage 1 of 5 (Device Prepare)
> complete.
> NetworkManager: <debug> [1239809518.003442] nm_serial_debug(): Sending: 'ATZ
> E0 V1 X4 &C1 +FCLASS=0'
> NetworkManager: <debug> [1239809518.068769] nm_serial_debug(): Got: 'ERROR'
> NetworkManager: <WARN>  init_done(): Trying alternate modem initialization
> NetworkManager: <debug> [1239809518.070701] nm_serial_debug(): Sending: 'ATZ
> E0 V1 &C1'
> NetworkManager: <debug> [1239809518.110398] nm_serial_debug(): Got: 'OK'
> NetworkManager: <debug> [1239809518.111960] nm_serial_debug(): Sending:
> 'AT+CPIN?'
> NetworkManager: <debug> [1239809518.134691] nm_serial_debug(): Got: '+CPIN:
> READY
>
> OK'
> NetworkManager: <debug> [1239809518.134945] nm_serial_debug(): Sending: 'ATZ
> E0 V1 X4 &C1 +FCLASS=0'
> NetworkManager: <debug> [1239809518.191349] nm_serial_debug(): Got: 'ERROR'
> NetworkManager: <WARN>  init_full_done(): Modem second stage initialization
> failed
> NetworkManager: <info>  (rfcomm0): device state change: 4 -> 9
> NetworkManager: <debug> [1239809518.193106] nm_serial_device_close():
> Closing device 'rfcomm0'
> NetworkManager: <info>  Marking connection 'Vodafone GPRS' invalid.
> NetworkManager: <info>  Activation (rfcomm0) failed.
> NetworkManager: <info>  (rfcomm0): device state change: 9 -> 3
> NetworkManager: <info>  (rfcomm0): deactivating device (reason: 0).
> NetworkManager: nm_system_device_flush_ip4_routes_with_iface: assertion
> `iface_idx >= 0' failed
> NetworkManager: nm_system_device_flush_ip4_addresses_with_iface: assertion
> `iface_idx >= 0' failed
>
> Is there any way to change the init sequence so the init string isn't
> re-sent after it has been rejected the first time?  I'm not a programmer,
> though I can compile from source if necessary and I'm happy to test things.
>
> At the end of the day, I can still get a connection manually for those times
> (like now) when I'm on the road and away from Wifi but I'd like to help to
> make NM "just work" too.
>
> Julian
>
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> http://mail.gnome.org/mailman/listinfo/networkmanager-list
>

If you search the list I think someone posted that they needed to make
some changes to NM to get it to work.   I don't remember the
specifics.