:: [DNG] Cannot mount android phone vi…
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Autor: Joel Roth
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A: dng
Assumpte: [DNG] Cannot mount android phone via usb
I previously used jmtpfs to mount an android phone connected
via usb. Now having issues mounting a recently acquired
nokia 6 with android pie.

First issue was missing /lib/udev/mtp-probe in dmesg output.
That was resolved by installing libmtp-runtime.

Now I get:

[ 2501.994664] usb 2-1.5: new high-speed USB device number 5 using ehci-pci
[ 2502.104236] usb 2-1.5: New USB device found, idVendor=0489, idProduct=c001, bcdDevice= 3.18
[ 2502.104242] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2502.104245] usb 2-1.5: Product: Android
[ 2502.104248] usb 2-1.5: Manufacturer: Android
[ 2502.104251] usb 2-1.5: SerialNumber: PLEGAR2812101035
[ 2502.105172] usb-storage 2-1.5:1.0: USB Mass Storage device detected
[ 2502.105264] scsi host6: usb-storage 2-1.5:1.0
[ 2503.108002] scsi 6:0:0:0: CD-ROM            Linux    File-CD Gadget   0318 PQ: 0 ANSI: 2
[ 2503.108959] sr 6:0:0:0: Power-on or device reset occurred
[ 2503.110700] sr 6:0:0:0: [sr1] scsi-1 drive
[ 2503.110909] sr 6:0:0:0: Attached scsi CD-ROM sr1
[ 2503.110984] sr 6:0:0:0: Attached scsi generic sg2 type 5


mount /dev/sr1 /mnt/test fails with

mount: no medium found on /dev/sr1

jtmpfs reports "No mtp devices found."

file /dev/sr1 reports

/dev/sr1: block special (11/1)


lsusb -v -s 2:5

   Bus 002 Device 005: ID 0489:c001 Foxconn / Hon Hai
   Device Descriptor:
     bLength                18
     bDescriptorType         1
     bcdUSB               2.00
     bDeviceClass            0 (Defined at Interface level)
     bDeviceSubClass         0
     bDeviceProtocol         0
     bMaxPacketSize0        64
     idVendor           0x0489 Foxconn / Hon Hai
     idProduct          0xc001
     bcdDevice            3.18
     iManufacturer           1 Android
     iProduct                2 Android
     iSerial                 3 PLEGAR2812101035
     bNumConfigurations      1
     Configuration Descriptor:
       bLength                 9
       bDescriptorType         2
       wTotalLength           55
       bNumInterfaces          2
       bConfigurationValue     1
       iConfiguration          0
       bmAttributes         0x80
         (Bus Powered)
       MaxPower              500mA
       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
       Interface Descriptor:
         bLength                 9
         bDescriptorType         4
         bInterfaceNumber        1
         bAlternateSetting       0
         bNumEndpoints           2
         bInterfaceClass       255 Vendor Specific Class
         bInterfaceSubClass     66
         bInterfaceProtocol      1
         iInterface              7 ADB Interface
         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
         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
   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)


I upgraded from 4.9 kernel to 4.19 and continue to have this issue.

According to apt-cache search, udev is a transitional package for
eudev. So does that mean I have an issue with eudev?

Grateful for any advice toward diagnosing or resolving this
issue!

--
Joel Roth

"Welcome to the World Heat Bank, where we store your waste
energy and return it with interest."