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[Bug 868034] Re: Huawei E220 can't connect on Ubuntu 11.10

 

Josua Dietze (digidietze) wrote on 2011-12-01:  #76

>> Is it possible for an E220 to be left in the "wrong"
>> state when it's switched off?
>
>Not that I know of. Power gone = back to install mode. Always. No known exceptions.
>
>This would not make sense anyway: the point of the whole process is to have the (Windows) drivers available at *every* plugin. >The device does not know if the machine it is plugged into has the drivers installed already.

Yes,  I agree with that,  but what about the  modem mode in the dongle?
The dongle has flash memory,  so Isn't  it possible for the status
within the modem mode to be changed in such a way that the change
survives an unplug?

 I'm still seeing inconsistent behaviour,  but some of it suggests that when my dongle switches into modem mode,  my system is not always seeing the same condition.   It always gives an indication of the mobile service being available,  but sometimes it won't connect and sometimes it will connect.    How can we explain why an unplug-replug sometimes makes it connect,  and sometimes it doesn't??  
   
Today my Ocelot left my dongle in such a condition that when I tried to use it with my Windows Huawei Mobile Connect software,  it wouldn't connect there either.  No amount of unplugging-replugging or closing and reopening Mobile Connect would persuade it to connect,  even though it was al.ways indicating that my mobile provider's service had been detected and was available.    Only when I went back on Ocelot and performed a usb-modeswitch command on it did it finally connect again. 

As you may gather,  I'm still stuck in brainstorm mode !

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https://bugs.launchpad.net/bugs/868034

Title:
  Huawei E220 can't connect on Ubuntu 11.10

Status in “linux” package in Ubuntu:
  Confirmed
Status in “network-manager” package in Ubuntu:
  Confirmed

Bug description:
  I'm using Ubuntu in my HP Pavilion dv6745tx laptop. I cannot connect
  the Huawei E220 usb modem since 11.10 beta1 (now I'm in beta2). There
  is  no problem in natty.

  I have found this in syslog

  Oct  5 07:10:51 ubuntu NetworkManager[1681]: <info> Activation (ttyUSB0) starting connection 'Dialog GSM Postpaid'
  Oct  5 07:10:51 ubuntu NetworkManager[1681]: <info> (ttyUSB0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
  Oct  5 07:10:51 ubuntu NetworkManager[1681]: <info> Activation (ttyUSB0) Stage 1 of 5 (Device Prepare) scheduled...
  Oct  5 07:10:51 ubuntu NetworkManager[1681]: <info> Activation (ttyUSB0) Stage 1 of 5 (Device Prepare) started...
  Oct  5 07:10:51 ubuntu NetworkManager[1681]: <info> Activation (ttyUSB0) Stage 1 of 5 (Device Prepare) complete.
  Oct  5 07:10:58 ubuntu NetworkManager[1681]: <warn> GSM connection failed: (32) Sending command failed: 'Resource temporarily unavailable'
  Oct  5 07:10:58 ubuntu NetworkManager[1681]: <info> (ttyUSB0): device state change: prepare -> failed (reason 'unknown') [40 120 1]
  Oct  5 07:10:58 ubuntu NetworkManager[1681]: <warn> Activation (ttyUSB0) failed.
  Oct  5 07:10:58 ubuntu NetworkManager[1681]: <info> (ttyUSB0): device state change: failed -> disconnected (reason 'none') [120 30 0]
  Oct  5 07:10:58 ubuntu NetworkManager[1681]: <info> (ttyUSB0): deactivating device (reason: 0).
  Oct  5 07:10:58 ubuntu NetworkManager[1681]: nm_system_iface_flush_routes: assertion `ifindex > 0' failed
  Oct  5 07:10:58 ubuntu NetworkManager[1681]: nm_system_iface_flush_addresses: assertion `ifindex > 0' failed

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