[clug] Mobile Broadband

Adam Baxter voltagex at voltagex.org
Sat Mar 13 15:54:01 MST 2010


if usb-modeswitch isn't installed, give that a go first.

On Sun, Mar 14, 2010 at 9:14 AM, Brett Worth <brett at worth.id.au> wrote:
> On 03/13/2010 09:48 PM, Adam Baxter wrote:
>> NetworkManager uses modem-manager for 3G connections. It logs to
>> syslog, is there anything in there about the failed connection?
>
> I get a few of lines in /var/log/messages:
>
> Mar 14 08:59:07 dart modem-manager: (ttyACM0) closing serial device...
> Mar 14 08:59:15 dart modem-manager: (ttyACM0) opening serial device...
> Mar 14 09:00:18 dart modem-manager: Got failure code 3: No carrier
>
> And then these lines in /var/log/NetworkManager:
>
> Mar 14 08:59:15 dart NetworkManager: <info>  Activation (ttyACM0) starting connection 'GSM
> connection 1'
> Mar 14 08:59:15 dart NetworkManager: <info>  (ttyACM0): device state change: 3 -> 4 (reason 0)
> Mar 14 08:59:15 dart NetworkManager: <info>  Activation (ttyACM0) Stage 1 of 5 (Device
> Prepare) scheduled...
> Mar 14 08:59:15 dart NetworkManager: <info>  Activation (ttyACM0) Stage 1 of 5 (Device
> Prepare) started...
> Mar 14 08:59:15 dart NetworkManager: <info>  Activation (ttyACM0) Stage 1 of 5 (Device
> Prepare) complete.
> Mar 14 09:00:18 dart NetworkManager: <WARN>  stage1_prepare_done(): GSM modem connection
> failed: Serial command timed out
> Mar 14 09:00:18 dart NetworkManager: <info>  (ttyACM0): device state change: 4 -> 9 (reason 1)
> Mar 14 09:00:18 dart NetworkManager: <info>  Marking connection 'GSM connection 1' invalid.
> Mar 14 09:00:18 dart NetworkManager: <info>  Activation (ttyACM0) failed.
> Mar 14 09:00:18 dart NetworkManager: <info>  (ttyACM0): device state change: 9 -> 3 (reason 0)
> Mar 14 09:00:18 dart NetworkManager: <info>  (ttyACM0): deactivating device (reason: 0).
> Mar 14 09:00:18 dart NetworkManager: nm_system_device_flush_ip4_routes_with_iface:
> assertion `iface_idx >= 0' failed
> Mar 14 09:00:18 dart NetworkManager: nm_system_device_flush_ip4_addresses_with_iface:
> assertion `iface_idx >= 0' failed
>
>
> Which doesn't mean much to me except for the timeout which coincides with the "no carrier"
> above.
>
> lsusb calls the phone: Bus 005 Device 002: ID 0421:002f Nokia Mobile Phones
>
> And given that the network manager recognises this as a mobile broadband device then I
> think the usb_modeswitch as mentioned in various blogs is not needed.
>
> I'm using *99# as the number.  Could that be wrong?
>
> Brett
>


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