Automatic Activation, Hotplug and UDEV, Configuration
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Facon
Posts: 4
Joined: 07 May 2021, 16:22

Huawei E3372h-153

Post by Facon » 07 May 2021, 16:35

Dear all,
I'm trying to configure the Huawei E3372h-153 4G stick on a Raspberry PI running Raspbian 10. I saw many people succeeding in this, but I keep having issue. My 'lsusb' output is:

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Bus 001 Device 004: ID 046d:c044 Logitech, Inc. LX3 Optical Mouse
Bus 001 Device 009: ID 12d1:15d6 Huawei Technologies Co., Ltd. 
Bus 001 Device 005: ID 03f0:0024 HP, Inc KU-0316 Keyboard
Bus 001 Device 006: ID 0424:7800 Standard Microsystems Corp. 
Bus 001 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
What puzzles me is that the Huawei dongle is recognized with productID 15d6. I looked in the data repository and I don't seem to find any device with such product ID. I tried using the configuration for the newer modem versions manually with: 'sudo usb_modeswitch -v 12d1 -p 15d6 -V 12d1 -P 1001 -C 2 -M '55534243123456780000000000000011062000000100000000000000000000' -W' and what I get is:

Code: Select all


 * usb_modeswitch: handle USB devices with multiple modes
 * Version 2.5.2 (C) Josua Dietze 2017
 * Based on libusb1/libusbx

 ! PLEASE REPORT NEW CONFIGURATIONS !

DefaultVendor=  0x12d1
DefaultProduct= 0x15d6
TargetVendor=   0x12d1
TargetProduct=  0x1001
TargetClass=    0x02
MessageContent="55534243123456780000000000000011062000000100000000000000000000"

Look for target devices ...
  found USB ID 046d:c044
  found USB ID 12d1:15d6
   vendor ID matched
  found USB ID 03f0:0024
  found USB ID 0424:7800
  found USB ID 0424:2514
  found USB ID 0424:2514
  found USB ID 1d6b:0002
 No devices in target mode or class found
Look for default devices ...
  found USB ID 046d:c044
  found USB ID 12d1:15d6
   vendor ID matched
   product ID matched
   device class 08 not matching target
   count device
  found USB ID 03f0:0024
  found USB ID 0424:7800
  found USB ID 0424:2514
  found USB ID 0424:2514
  found USB ID 1d6b:0002
 Found devices in default mode (1)
Access device 009 on bus 001
Get the current device configuration ...
Current configuration number is 2
Use interface number 0
 with class 2
Error: can't use storage command in MessageContent with interface 0; interface class is 2, expected 8. Abort
Do you have any suggestions on how to get the modem properly recognized, and use it with wvdial?

I'll be forever thankful to anyone who has suggestions :D :D

LOM
Posts: 1355
Joined: 11 Jul 2012, 15:14
Location: Koh Samui, TH

Re: Huawei E3372h-153

Post by LOM » 08 May 2021, 06:10

12d1:15d6 is a new USB Id which most likely when switched will switch into 12d1:15d7.
It looks like 12d1:15d6 has 2 configurations and will by default enter the second config which is an MBIM configuration.
You can stop it from entering this config by editing /etc/usb_modeswitch.conf and change DisableMBIMGlobal from 0 to 1, this will after you replug the dongle allow you to manually switch it from the cmdline:

sudo usb_modeswitch -v 12d1 -p 15d6 -M "55534243123456780000000000000011062000000101000100000000000000" -W

please show me the output from:
sudo lsusb -vd 12d1:15d6 before the dongle is switched

and from:
sudo lsusb -vd 12d1:15d7 (?) after you have manually switched the dongle

Facon
Posts: 4
Joined: 07 May 2021, 16:22

Re: Huawei E3372h-153

Post by Facon » 08 May 2021, 11:19

Thanks a lot LOM,
I had to leave everything at work yesterday, I'll test it on Monday as soon as possible!
Just out of curiosity, how do you know that the new ID will be 15d7? Is that just because there are 2 configurations and switching to the second gives a +1?

LOM
Posts: 1355
Joined: 11 Jul 2012, 15:14
Location: Koh Samui, TH

Re: Huawei E3372h-153

Post by LOM » 08 May 2021, 15:05

Facon wrote: 08 May 2021, 11:19
Just out of curiosity, how do you know that the new ID will be 15d7? Is that just because there are 2 configurations and switching to the second gives a +1?
I don't know that it will switch to 15d7, it is just an advanced guess but it is not related to the number of configs.

You will see what it becomes, a simple lsusb will tell you and you don't need the switched Id/destination Id on the cmd line, the initial Id is what is needed for usb_modeswitch to switch it.

Facon
Posts: 4
Joined: 07 May 2021, 16:22

Re: Huawei E3372h-153

Post by Facon » 10 May 2021, 09:58

Hi LOM,
I did as you said and here's the 'lsusb -vd 12d1:15d6' before:

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Bus 001 Device 010: ID 12d1:15d6 Huawei Technologies Co., Ltd. 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol       255 
  bMaxPacketSize0        64
  idVendor           0x12d1 Huawei Technologies Co., Ltd.
  idProduct          0x15d6 
  bcdDevice            1.02
  iManufacturer           1 HUAWEI_MOBILE
  iProduct                2 HUAWEI_MOBILE
  iSerial                 3 0123456789ABCDEF
  bNumConfigurations      2
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0020
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower                2mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      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     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               1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0076
    bNumInterfaces          3
    bConfigurationValue     2
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower                2mA
    Interface Association:
      bLength                 8
      bDescriptorType        11
      bFirstInterface         0
      bInterfaceCount         2
      bFunctionClass          2 Communications
      bFunctionSubClass      14 
      bFunctionProtocol       0 
      iFunction               8 Huawei E3372 Mobile Device
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass     14 
      bInterfaceProtocol      0 
      iInterface              5 NCM Network Control Model
      CDC Header:
        bcdCDC               1.10
      CDC MBIM:
        bcdMBIMVersion       1.00
        wMaxControlMessage   1024
        bNumberFilters       32
        bMaxFilterSize       128
        wMaxSegmentSize      1500
        bmNetworkCapabilities 0x20
          8-byte ntb input size
      CDC MBIM Extended:
        bcdMBIMExtendedVersion           1.00
        bMaxOutstandingCommandMessages     16
        wMTU                             1500
      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     0x0010  1x 16 bytes
        bInterval               5
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0 
      bInterfaceProtocol      2 
      iInterface              6 CDC Network Data
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       1
      bNumEndpoints           2
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0 
      bInterfaceProtocol      2 
      iInterface              6 CDC Network 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
Binary Object Store Descriptor:
  bLength                 5
  bDescriptorType        15
  wTotalLength       0x0016
  bNumDeviceCaps          2
  USB 2.0 Extension Device Capability:
    bLength                 7
    bDescriptorType        16
    bDevCapabilityType      2
    bmAttributes   0x00000002
      HIRD Link Power Management (LPM) Supported
  SuperSpeed USB Device Capability:
    bLength                10
    bDescriptorType        16
    bDevCapabilityType      3
    bmAttributes         0x00
    wSpeedsSupported   0x000f
      Device can operate at Low Speed (1Mbps)
      Device can operate at Full Speed (12Mbps)
      Device can operate at High Speed (480Mbps)
      Device can operate at SuperSpeed (5Gbps)
    bFunctionalitySupport   1
      Lowest fully-functional device speed is Full Speed (12Mbps)
    bU1DevExitLat           1 micro seconds
    bU2DevExitLat         500 micro seconds
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0001
  Self Powered
After running the command I got:

Code: Select all

Take all parameters from the command line


 * usb_modeswitch: handle USB devices with multiple modes
 * Version 2.5.2 (C) Josua Dietze 2017
 * Based on libusb1/libusbx

 ! PLEASE REPORT NEW CONFIGURATIONS !

DefaultVendor=  0x12d1
DefaultProduct= 0x15d6
MessageContent="55534243123456780000000000000011062000000101000100000000000000"

Look for default devices ...
  found USB ID 046d:c044
  found USB ID 12d1:15d6
   vendor ID matched
   product ID matched
  found USB ID 03f0:0024
  found USB ID 0424:7800
  found USB ID 0424:2514
  found USB ID 0424:2514
  found USB ID 1d6b:0002
 Found devices in default mode (1)
Access device 011 on bus 001
Get the current device configuration ...
Current configuration number is 1
Use interface number 0
 with class 8
Use endpoints 0x01 (out) and 0x81 (in)

USB description data (for identification)
-------------------------
Manufacturer: HUAWEI_MOBILE
     Product: HUAWEI_MOBILE
  Serial No.: 0123456789ABCDEF
-------------------------
Looking for active drivers ...
 OK, driver detached
Set up interface 0
Use endpoint 0x01 for message sending ...
Trying to send message 1 to endpoint 0x01 ...
 OK, message successfully sent
Read the response to message 1 (CSW) ...
 Response successfully read (13 bytes), status 0
Reset response endpoint 0x81
libusb: error [op_clear_halt] clear_halt failed error -1 errno 71
 Could not reset endpoint (probably harmless): -99
Reset message endpoint 0x01
libusb: error [op_clear_halt] clear_halt failed error -1 errno 71
 Could not reset endpoint (probably harmless): -99
 Device is gone, skip any further commands
-> Run lsusb to note any changes. Bye!
Indeed now the dongle appears as 12d1:15d7 and the 'lsusb -vd 12d1:15d7' command gives me:

Code: Select all

Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x12d1 Huawei Technologies Co., Ltd.
  idProduct          0x15d7 
  bcdDevice            1.02
  iManufacturer           1 HUAWEI_MOBILE
  iProduct                2 HUAWEI_MOBILE
  iSerial                 3 0123456789ABCDEF
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x00dd
    bNumInterfaces          5
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower                2mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2 
      bInterfaceProtocol     18 
      iInterface              0 
      ** UNRECOGNIZED:  05 24 00 10 01
      ** UNRECOGNIZED:  04 24 02 02
      ** UNRECOGNIZED:  05 24 01 00 00
      ** UNRECOGNIZED:  05 24 06 00 00
      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               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               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2 
      bInterfaceProtocol      1 
      iInterface              0 
      ** UNRECOGNIZED:  05 24 00 10 01
      ** UNRECOGNIZED:  04 24 02 02
      ** UNRECOGNIZED:  05 24 01 00 01
      ** UNRECOGNIZED:  05 24 06 00 00
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x000a  1x 10 bytes
        bInterval               9
      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     0x03  EP 3 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           1
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2 
      bInterfaceProtocol     22 
      iInterface              5 NCM Network Control Model
      ** UNRECOGNIZED:  05 24 00 10 01
      ** UNRECOGNIZED:  06 24 1a 00 01 1f
      ** UNRECOGNIZED:  0d 24 0f 07 0f 00 00 00 ea 05 03 00 01
      ** UNRECOGNIZED:  05 24 06 02 02
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x86  EP 6 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0010  1x 16 bytes
        bInterval               5
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       1
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2 
      bInterfaceProtocol     22 
      iInterface              6 CDC Network Data
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x86  EP 6 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0010  1x 16 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               0
      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               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      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     0x87  EP 7 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     0x05  EP 5 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        4
      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     0x88  EP 8 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     0x06  EP 6 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               1
Binary Object Store Descriptor:
  bLength                 5
  bDescriptorType        15
  wTotalLength       0x0016
  bNumDeviceCaps          2
  USB 2.0 Extension Device Capability:
    bLength                 7
    bDescriptorType        16
    bDevCapabilityType      2
    bmAttributes   0x00000002
      HIRD Link Power Management (LPM) Supported
  SuperSpeed USB Device Capability:
    bLength                10
    bDescriptorType        16
    bDevCapabilityType      3
    bmAttributes         0x00
    wSpeedsSupported   0x000f
      Device can operate at Low Speed (1Mbps)
      Device can operate at Full Speed (12Mbps)
      Device can operate at High Speed (480Mbps)
      Device can operate at SuperSpeed (5Gbps)
    bFunctionalitySupport   1
      Lowest fully-functional device speed is Full Speed (12Mbps)
    bU1DevExitLat           1 micro seconds
    bU2DevExitLat         500 micro seconds
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0001
  Self Powered
It seems like the command worked! Thanks! How can I tell if I can properly communicate with the device? I'm looking for something like /dev/gsmmodem, in order to add it to the wvdial configuration, but I'm not seeing anything like that..

LOM
Posts: 1355
Joined: 11 Jul 2012, 15:14
Location: Koh Samui, TH

Re: Huawei E3372h-153

Post by LOM » 10 May 2021, 12:06

Thanks for the device composition listings, this is the interface usage for 12d1:15d7

MI_00 HUAWEI Mobile Connect - 3G PC UI Interface
MI_01 HUAWEI Mobile Connect - 3G Modem
MI_02 HUAWEI Mobile Connect - 3G Network Card (huawei_cdc_ncm)
MI_03 USB Mass Storage Device
MI_04 USB Mass Storage Device

The link creation for /dev/gsmmodem may be broken or removed, it was never 100% reliable anyway.
ttyUSB0 will be your AT-cmd device and ttyUSB1 your modem data device.

12d1:15d6 has only 1 interface in config#1, the virtual cd-rom drive which we send the switch message to.
The virtual CD-ROM contains MS Windows drivers + connection manager and I would be happy if you could extract the .inf files from the driver pack.
Everything may be packed in a big .exe file but the files within can be extracted with 7-zip for instance.
Your dongle is new and the driver .inf files must be of a version I don't have and they probably cover more new dongles in the 12d1:15cx/15dx/15ex series.

Facon
Posts: 4
Joined: 07 May 2021, 16:22

Re: Huawei E3372h-153

Post by Facon » 10 May 2021, 18:43

Hi LOM,
sorry, I'm very noob with all of this. I've tried setting up the connection with wvdial, which has been kind of a pain to get to work and it's still not always working properly.
I noticed that when wvdial is running I indeed see a ppp0 connection, but even without, I see a wwan0 connection, if I run 'ifconfig', and I see some IP addresses. Is it possible that I should just try to configure wwan0, without dealing with the whole wvdial stuff? Of course the wwan0 network is not working out of the box, and this is reasonable, as I haven't even specified an APN for it, but is there a way to configure it directly?

Also, concerning the MS Windows drivers, I'm not sure how I could extract the .inf files, and, by the way, would that even be legal? These I believe are some proprietary drivers, they will probably have some kind of copyrights attached!

LOM
Posts: 1355
Joined: 11 Jul 2012, 15:14
Location: Koh Samui, TH

Re: Huawei E3372h-153

Post by LOM » 12 May 2021, 09:31

The wwan0 device is created from interface #2, the network interface driven by the huawei_cdc_ncm driver, it is a high speed direct connection protocol vs the low speed serial modem dialup protocol.
Your system log will show you driver bindings and the result of them.
If you don't want to use direct network connection then rename the driver, thast will stop it from binding.

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