Huawei Gobi 3000 not detected

[Varban]

I have a Huawei Gobi 3000 device that has a GSM firmware loaded and provides 3 ttyUSB interfaces via qcserial.
I can connect and use the device via pppd without a problem but modemmanager cannot detect the device.
Running on Debian Sid with modemmanager version 0.5-1
The serial device that pppd works with is ttyUSB1 and here is the output I get when running modem-manager --debug

modem-manager[6245]: <info> [1316615687.378757] [main.c:167] main(): ModemManager (version 0.5) starting...
modem-manager[6245]: <info> [1316615687.383918] [mm-manager.c:120] load_plugin(): Loaded plugin Option High-Speed
modem-manager[6245]: <info> [1316615687.384393] [mm-manager.c:120] load_plugin(): Loaded plugin Gobi
modem-manager[6245]: <info> [1316615687.384854] [mm-manager.c:120] load_plugin(): Loaded plugin Option
modem-manager[6245]: <info> [1316615687.385291] [mm-manager.c:120] load_plugin(): Loaded plugin MotoC
modem-manager[6245]: <info> [1316615687.385729] [mm-manager.c:120] load_plugin(): Loaded plugin Linktop
modem-manager[6245]: <info> [1316615687.386162] [mm-manager.c:120] load_plugin(): Loaded plugin Longcheer
modem-manager[6245]: <info> [1316615687.386582] [mm-manager.c:120] load_plugin(): Loaded plugin X22X
modem-manager[6245]: <info> [1316615687.387050] [mm-manager.c:120] load_plugin(): Loaded plugin Novatel
modem-manager[6245]: <info> [1316615687.387468] [mm-manager.c:120] load_plugin(): Loaded plugin Generic
modem-manager[6245]: <info> [1316615687.387904] [mm-manager.c:120] load_plugin(): Loaded plugin Samsung
modem-manager[6245]: <info> [1316615687.388325] [mm-manager.c:120] load_plugin(): Loaded plugin Nokia
modem-manager[6245]: <info> [1316615687.388748] [mm-manager.c:120] load_plugin(): Loaded plugin SimTech
modem-manager[6245]: <info> [1316615687.389193] [mm-manager.c:120] load_plugin(): Loaded plugin Ericsson MBM
modem-manager[6245]: <info> [1316615687.389637] [mm-manager.c:120] load_plugin(): Loaded plugin ZTE
modem-manager[6245]: <info> [1316615687.390064] [mm-manager.c:120] load_plugin(): Loaded plugin Wavecom
modem-manager[6245]: <info> [1316615687.390492] [mm-manager.c:120] load_plugin(): Loaded plugin Sierra
modem-manager[6245]: <info> [1316615687.390977] [mm-manager.c:120] load_plugin(): Loaded plugin Huawei
modem-manager[6245]: <info> [1316615687.391404] [mm-manager.c:120] load_plugin(): Loaded plugin AnyData
modem-manager[6245]: <debug> [1316615687.397584] [mm-manager.c:809] device_added(): (tty/ttyS0): port's parent platform driver is not whitelisted
modem-manager[6245]: <debug> [1316615687.397994] [mm-manager.c:809] device_added(): (tty/ttyS1): port's parent platform driver is not whitelisted
modem-manager[6245]: <debug> [1316615687.398337] [mm-manager.c:809] device_added(): (tty/ttyS2): port's parent platform driver is not whitelisted
modem-manager[6245]: <debug> [1316615687.398667] [mm-manager.c:809] device_added(): (tty/ttyS3): port's parent platform driver is not whitelisted
modem-manager[6245]: <info> [1316615687.404036] [mm-serial-port.c:741] mm_serial_port_open(): (ttyUSB1) opening serial port...
modem-manager[6245]: <debug> [1316615687.404123] [mm-serial-port.c:810] mm_serial_port_open(): (ttyUSB1) device open count is 1 (open)
modem-manager[6245]: <debug> [1316615687.404141] [mm-plugin-base.c:850] try_open(): (ttyUSB1): probe requested by plugin 'Gobi'
modem-manager[6245]: <debug> [1316615687.404225] [mm-at-serial-port.c:298] debug_log(): (ttyUSB1): <-- '<CR><LF>+PACSP0<CR><LF>'
modem-manager[6245]: <debug> [1316615687.504556] [mm-at-serial-port.c:298] debug_log(): (ttyUSB1): --> 'AT+GCAP<CR>'
modem-manager[6245]: <debug> [1316615688.204741] [mm-at-serial-port.c:298] debug_log(): (ttyUSB1): <-- 'AT+GCAP'
modem-manager[6245]: <debug> [1316615688.206753] [mm-at-serial-port.c:298] debug_log(): (ttyUSB1): <-- '<CR>'
modem-manager[6245]: <debug> [1316615688.207998] [mm-at-serial-port.c:298] debug_log(): (ttyUSB1): <-- '<CR><LF>+GCAP: +CGSM,+DS,+ES<CR><LF><CR><LF>OK<CR><LF>'
modem-manager[6245]: <debug> [1316615688.208129] [mm-serial-port.c:844] mm_serial_port_close(): (ttyUSB1) device open count is 0 (close)
modem-manager[6245]: <info> [1316615688.208149] [mm-serial-port.c:859] mm_serial_port_close(): (ttyUSB1) closing serial port...
modem-manager[6245]: <info> [1316615688.208691] [mm-serial-port.c:880] mm_serial_port_close(): (ttyUSB1) serial port closed
modem-manager[6245]: <debug> [1316615688.215410] [mm-manager.c:491] try_supports_port(): (Huawei): (ttyUSB1) deferring support check
modem-manager[6245]: <debug> [1316615691.218642] [mm-manager.c:457] supports_defer_timeout(): (ttyUSB1): re-checking support...
modem-manager[6245]: <debug> [1316615691.219568] [mm-manager.c:491] try_supports_port(): (Huawei): (ttyUSB1) deferring support check

after that I only get the re-checking support and deffering support check messages.

lsusb -v output:

Bus 001 Device 019: ID 12d1:14f1 Huawei Technologies Co., Ltd.
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 2.00
  bDeviceClass 0 (Defined at Interface level)
  bDeviceSubClass 0
  bDeviceProtocol 0
  bMaxPacketSize0 64
  idVendor 0x12d1 Huawei Technologies Co., Ltd.
  idProduct 0x14f1
  bcdDevice 0.02
  iManufacturer 3 HUAWEI Incorporated
  iProduct 2 Huawei EM680 w/Gobi Technology
  iSerial 0
  bNumConfigurations 1
  Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 157
    bNumInterfaces 4
    bConfigurationValue 1
    iConfiguration 1 Qualcomm Configuration
    bmAttributes 0xe0
      Self Powered
      Remote Wakeup
    MaxPower 500mA
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 0
      bAlternateSetting 0
      bNumEndpoints 3
      bInterfaceClass 255 Vendor Specific Class
      bInterfaceSubClass 255 Vendor Specific Subclass
      bInterfaceProtocol 255 Vendor Specific Protocol
      iInterface 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x81 EP 1 IN
        bmAttributes 3
          Transfer Type Interrupt
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 5
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x82 EP 2 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 32
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x01 EP 1 OUT
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 32
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 1
      bAlternateSetting 0
      bNumEndpoints 2
      bInterfaceClass 255 Vendor Specific Class
      bInterfaceSubClass 255 Vendor Specific Subclass
      bInterfaceProtocol 255 Vendor Specific Protocol
      iInterface 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x83 EP 3 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 32
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x02 EP 2 OUT
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 32
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 2
      bAlternateSetting 0
      bNumEndpoints 3
      bInterfaceClass 255 Vendor Specific Class
      bInterfaceSubClass 255 Vendor Specific Subclass
      bInterfaceProtocol 255 Vendor Specific Protocol
      iInterface 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x84 EP 4 IN
        bmAttributes 3
          Transfer Type Interrupt
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 5
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x85 EP 5 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 32
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x03 EP 3 OUT
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 32
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 3
      bAlternateSetting 0
      bNumEndpoints 2
      bInterfaceClass 255 Vendor Specific Class
      bInterfaceSubClass 255 Vendor Specific Subclass
      bInterfaceProtocol 255 Vendor Specific Protocol
      iInterface 0
      ** UNRECOGNIZED: 05 24 00 10 01
      ** UNRECOGNIZED: 05 24 15 00 01
      ** UNRECOGNIZED: 05 24 06 03 03
      ** UNRECOGNIZED: 15 24 12 20 01 98 b0 6a 49 b0 9e 48 96 94 46 d9 9a 28 ca 4e 5d
      ** UNRECOGNIZED: 06 24 13 00 01 20
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x86 EP 6 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 32
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x04 EP 4 OUT
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 32
Device Qualifier (for other device speed):
  bLength 10
  bDescriptorType 6
  bcdUSB 2.00
  bDeviceClass 0 (Defined at Interface level)
  bDeviceSubClass 0
  bDeviceProtocol 0
  bMaxPacketSize0 64
  bNumConfigurations 1
Device Status: 0x0000
  (Bus Powered)

[Varban (varban)]

Looking over the code it seems that the Huawei plugin attempts to handle the device and goes into a loop because the 0 interface of the usb device is not linked to a tty device and the plugin expects it to show up.

If I read the code correctly, I don't think the Huawei plugin should handle this device, maybe the Gobi or generic gsm would work. Is there any way I can pass a udev property to tell modem manager which plugin to use? Or maybe disable a plugin?

[Varban (varban)]

Fixed in https://bugzilla.gnome.org/show_bug.cgi?id=660998

[CmaJ (matutet)]

After locally applying mentioned patch by Varban #2, my "qcserial" Gobi 3000 modem is properly handled by Network-Manager on a Sony Vaio VPCSA laptop.