Re: ZTE MF823 USB Ethernet Dongle on RPi-2/Arch/LXDE

[John Whitmore <arigead gmail com>]

On Thu, Jun 18, 2015 at 09:35:04AM -0500, Dan Williams wrote:
> On Thu, 2015-06-18 at 10:01 +0100, John Whitmore wrote:
> > Been on a few times between this list and the ModemManager. I was hoping to
> > setup a system where I could build some intelligence behind two USB 4G Dongles
> > and jump between connections depending on signal strength.
> >
> > My second Dongle has stopped that, as it don't report as a Modem device and
> > instead uses Ethernet over USB. This all works out of the box on my OpenSUSE
> > Laptop but the RPi-2 doesn't work.
> >
> > On the laptop "usb-devices" is giving me:
>
> What's the 'lsusb -v -d 19d2:1403' output?
>
> Dan
In both cases the output is more or less identical except for this diff:

john bamboo:> diff lsusb.txt lsusb_suse.txt 
2c2
< Bus 001 Device 008: ID 19d2:1403 ZTE WCDMA Technologies MSM 
---
> Bus 002 Device 006: ID 19d2:1403 ZTE WCDMA Technologies MSM 
7c7
<   bDeviceClass            0 
---
>   bDeviceClass            0 (Defined at Interface level)
75c75
<       bInterfaceSubClass      0 
---
>       bInterfaceSubClass      0 Unused
132c132
<   bDeviceClass            0 
---
>   bDeviceClass            0 (Defined at Interface level)



Apart from those few differences it's all the same:



Bus 002 Device 006: ID 19d2:1403 ZTE WCDMA Technologies MSM 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x19d2 ZTE WCDMA Technologies MSM
  idProduct          0x1403 
  bcdDevice           50.09
  iManufacturer           1 ZTE,Incorporated
  iProduct                2 ZTE Technologies MSM
  iSerial                 3 MF8230ZTED010000CP261718SKYDWQ5II0PESHF3BW707_8C64&&&&&&&&&&&&&0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           98
    bNumInterfaces          3
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower              500mA
    Interface Association:
      bLength                 8
      bDescriptorType        11
      bFirstInterface         0
      bInterfaceCount         2
      bFunctionClass        224 Wireless
      bFunctionSubClass       1 Radio Frequency
      bFunctionProtocol       3 RNDIS
      iFunction               7 RNDIS
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass      2 Abstract (modem)
      bInterfaceProtocol    255 Vendor Specific (MSFT RNDIS?)
      iInterface              5 RNDIS Communications Control
      CDC Header:
        bcdCDC               1.10
      CDC Call Management:
        bmCapabilities       0x00
        bDataInterface          1
      CDC ACM:
        bmCapabilities       0x00
      CDC Union:
        bMasterInterface        0
        bSlaveInterface         1 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval               9
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 
      iInterface              6 RNDIS Ethernet Data
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      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               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              4 Mass Storage
      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               0
      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               1
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)