3

My Galaxy A5 (2017) is not mounting automatically although it appears to be recognized properly (see dmesg) and it is set for MTP transfer:

[ 1799.793224] usb 3-1: USB disconnect, device number 3
[ 1813.883366] usb 3-1: new high-speed USB device number 4 using xhci_hcd
[ 1814.011999] usb 3-1: New USB device found, idVendor=04e8, idProduct=6860
[ 1814.012004] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1814.012007] usb 3-1: Product: SAMSUNG_Android
[ 1814.012009] usb 3-1: Manufacturer: SAMSUNG
[ 1814.012011] usb 3-1: SerialNumber: 5210e432c0641479
[ 1814.013521] cdc_acm 3-1:1.1: ttyACM0: USB ACM device

Furthermore lsusb clearly lists my phone:

Bus 003 Device 005: ID 04e8:6860 Samsung Electronics Co., Ltd Galaxy (MTP)

In addition, my phone keeps flashing an error message:

Attention
The connected device is unable to access data on this device. 
Reconnect the USB cable and try again. 

I am using a Type-C cable on Ubuntu 16.04.3 LTS running on an ASUS laptop.

I saw the question and answer at (re) mount usb device, yet it doesn't work for me since mount | grep ^/dev shows nothing related to my phone. That being said, I do see /dev/ttyACM0, yet mount failed with the error message:

mount:  /dev/ttyACM0 is not a block device

--EDIT 1--

I didn't get any better results in PTP mode - i.e. the phone was not automatically mounted:

[ 3517.875378] usb 3-1: USB disconnect, device number 11
[ 3517.876961] cdc_acm 3-1:1.1: failed to set dtr/rts
[ 3518.183436] usb 3-1: new high-speed USB device number 12 using xhci_hcd
[ 3518.312069] usb 3-1: New USB device found, idVendor=04e8, idProduct=6866
[ 3518.312077] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 3518.312082] usb 3-1: Product: SAMSUNG_Android
[ 3518.312085] usb 3-1: Manufacturer: SAMSUNG
[ 3518.312088] usb 3-1: SerialNumber: 5210e432c0641479

--EDIT2--

Running gmtp shows the following:

Device 0 (VID=04e8 and PID=6860) is a Samsung Galaxy models (MTP).
LIBMTP ERROR: couldnt parse extension samsung.com/devicestatus:1
Error 1: Get Storage information failed.
Detect: No available Storage found on device?

--EDIT3--

The same cable, connected to the same USB port, on the same (dual boot) computer, mounts the device just fine in Win10

  • Does it work in PTP mode? – You'reAGitForNotUsingGit Aug 6 '17 at 12:12
  • That's weird. Make sure to enable MTP or PTP mode. The phone should ask you whether you want charge only or share files. – user633551 Aug 6 '17 at 12:14
  • edited above... – levengli Aug 6 '17 at 12:15
  • 1
    A possible solution would be to unlock developer options on your phone and enable USB debugging option under debugging section. Should allow data transfer between the devices – user633551 Aug 6 '17 at 12:34
  • Thanks for the suggestions @user633551; this is already the case for my phone (I use it for app development) – levengli Aug 6 '17 at 12:35

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