#1566 Device 0 (VID=12d1 and PID=1082) is UNKNOWN.

[Anonymous]

Can't connect my device in MTP. OS: ubunut. I am using Honor 5X. Updated to marshmallow in last week. Not really an issue reporter. Can provide more information.

[Anonymous]

RUN:$ sudo mtpfs -o allow_other /media/mtp/
Unable to open ~/.mtpz-data for reading, MTPZ disabled.Listing raw device(s)
Device 0 (VID=12d1 and PID=1082) is UNKNOWN.
Please report this VID/PID and the device model to the libmtp development team
Found 1 device(s):
12d1:1082 @ bus 1, dev 111
Attempting to connect device
Android device detected, assigning default bug flags
^Cazim@azim-qburst-desktop:~$ sudo mtpfs -o allow_other /media/mtp/
Unable to open ~/.mtpz-data for reading, MTPZ disabled.Listing raw device(s)
Device 0 (VID=12d1 and PID=1082) is UNKNOWN.
Please report this VID/PID and the device model to the libmtp development team
Found 1 device(s):
12d1:1082 @ bus 1, dev 111
Attempting to connect device
Android device detected, assigning default bug flags
Error 7: Found a bad handle, trying to ignore it.
Error 2: PTP Layer error 02ff: get_handles_recursively(): could not get object handles.
Error 2: Error 02ff: PTP: I/O error
Error 7: Found a bad handle, trying to ignore it.

...
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 7: Found a bad handle, trying to ignore it.
Error 2: PTP Layer error 02ff: get_handles_recursively(): could not get object handles.
Error 2: Error 02ff: PTP: I/O error
Listing File Information on Device with name: (NULL)
LIBMTP_Get_Storage() failed:-1
Error 2: PTP Layer error 02ff: Error getting friendlyname.
Error 2: Error 02ff: PTP: I/O error

[Marcus Meissner]

the id is in the current release. (a huaweii ascend p8)

it should have howveer worked as root,

[Anonymous]

mtp-detect response:

$mtp-detect
Unable to read MTPZ public exponent from ~/.mtpz-data, MTPZ disabledlibmtp version: 1.1.6

Listing raw device(s)
   No raw devices found.

lsusb -v response

There are more. But thinking Bus 001 Device 011: is what you need.

Bus 001 Device 011: ID 12d1:1082 Huawei Technologies Co., Ltd. 
Couldn't open device, some information will be missing
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          0x1082 
  bcdDevice           ff.ff
  iManufacturer           1 
  iProduct                2 
  iSerial                 3 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           62
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    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      0 
      iInterface              4 
      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
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x001c  1x 28 bytes
        bInterval               6
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              5 
      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

Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Device Descriptor:
  b...
  ...
  ...
   Port 4: 0000.0100 power
   Port 5: 0000.0100 power
   Port 6: 0000.0100 power
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         0 Full speed (or root) hub
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0001
  Self Powered

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
 ..
 ...
 ...0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      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     0x0004  1x 4 bytes
        bInterval              12

Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               3.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  ...
  ...
  ...
  ...
  ...
  ...
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0005  1x 5 bytes
        bInterval              10

Bus 003 Device 002: ID 045e:07b9 Microsoft Corp. 
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
...
...
...

          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              24

Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
 ...
 ...
 ...
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12

Tried add entry in https://sourceforge.net/p/libmtp/code/ci/HEAD/tree/src/music-players.h#l2713. But didn't know how. The description is "ascend p8". It should be "honor 5X".

[Ivannnn]

Nubia ZTE z7 Max
$ jmtpfs /media/exfat
Device 0 (VID=19d2 and PID=ffce) is UNKNOWN.
Please report this VID/PID and the device model to the libmtp development team
Device 1 (VID=04e8 and PID=685e) is a Samsung Galaxy Y.