Comment 11 for bug 573524

I realise I'm late to the party here, but I thought this may be of interest. Running in debug mode on 16.04 gives some useful output, looks like there's a mutex handling error:

root@centaurus:~# mtpfs -d /mnt
Listing raw device(s)
Device 0 (VID=0bb4 and PID=0c93) is a HTC EVO 4G LTE/One V (ID1).
   Found 1 device(s):
   HTC: EVO 4G LTE/One V (ID1) (0bb4:0c93) @ bus 3, dev 5
Attempting to connect device
Android device detected, assigning default bug flags
Listing File Information on Device with name: (NULL)
FUSE library version: 2.9.4
nullpath_ok: 0
nopath: 0
utime_omit_ok: 0
unique: 1, opcode: INIT (26), nodeid: 0, insize: 56, pid: 0
INIT: 7.23
flags=0x0003f7fb
max_readahead=0x00020000
   INIT: 7.19
   flags=0x00000010
   max_readahead=0x00020000
   max_write=0x00020000
   max_background=0
   congestion_threshold=0
   unique: 1, success, outsize: 40

unique: 2, opcode: GETATTR (3), nodeid: 1, insize: 56, pid: 20357
getattr /
Attempt to unlock mutex that was not locked
Aborted (core dumped)