[SOLVED] problem mounting Android phone as filesystem on Debian laptop via USB

TomRoche · 04-05-2015, 07:53 PM

summary: When I connect my Android phone to my Debian laptop, the laptop detects the phone via both `nautilus` and `jmtpfs -l`. However my attempt to mount the phone's storage with `jmtpfs` fails with

Code:

-6PTP_ERROR_IO: failed to open session, trying again after resetting USB interface

details:

I have a Debian laptop with

Code:

$ cat /etc/debian_version
jessie/sid
$ uname -rv
3.11-2-amd64 #1 SMP Debian 3.11.8-1 (2013-11-13)
$ gcc --version | head -n 1
gcc (Debian 4.8.2-1) 4.8.2
$ aptitude versions --disable-columns mtp | grep -e '^Package\|^i' | grep -vie 'dovecot\|mtpaint\|smtp'
Package gmtp:
Package gmtp:i386:
Package jmtpfs:
i  0.5-2  100
Package kio-mtp:
Package kio-mtp-dbg:
Package kio-mtp-dbg:i386:
Package kio-mtp:i386:
Package libmtp-common:
i  1.1.8-1  100
Package libmtp-dbg:
Package libmtp-dbg:i386:
Package libmtp-dev:
Package libmtp-dev:i386:
Package libmtp-doc:
i  1.1.8-1  100
Package libmtp-runtime:
i  1.1.8-1+b1  100
Package libmtp-runtime:i386:
Package libmtp9:
i  1.1.8-1+b1  100
Package libmtp9:i386:
i  1.01-3 testing 500
Package mtp-tools:
i  1.1.6-20-g1b9f164-1 testing 500
Package mtp-tools:i386:
Package python-pymtp:
Package uucp-lmtp:

I also have a (working) Motorola Moto G running Android version=4.4.2. With no MTP devices connected to the Debian box, I see

Code:

$ date ; jmtpfs -l
Sun Apr  5 20:08:46 EDT 2015
Unable to open ~/.mtpz-data for reading, MTPZ disabled.
Available devices (busLocation, devNum, productId, vendorId, product, vendor):

I then connected the MotoG to the laptop with a USB cable. A `nautilus` window opened showing the (browsable) contents of location='mtp://[usb:001,040]/' with device name='XT1028'. I can also see

Code:

$ date ; jmtpfs -l
Sun Apr  5 20:09:06 EDT 2015
Unable to open ~/.mtpz-data for reading, MTPZ disabled.
Device 0 (VID=22b8 and PID=2e82) is a Motorola Moto G (ID2).
Available devices (busLocation, devNum, productId, vendorId, product, vendor):
1, 41, 0x2e82, 0x22b8, Moto G (ID2), Motorola

However, I am unable to mount the device with

Code:

$ mkdir -p ~/Android_transfer/
$ sudo jmtpfs ~/Android_transfer/
Unable to open ~/.mtpz-data for reading, MTPZ disabled.
Device 0 (VID=22b8 and PID=2e82) is a Motorola Moto G (ID2).
ignoring libusb_claim_interface() = -6PTP_ERROR_IO: failed to open session, trying again after resetting USB interface
LIBMTP libusb: Attempt to reset device
Android device detected, assigning default bug flags
$ ls -al ~/Android_transfer/
ls: cannot access /home/me/Android_transfer/: Permission denied
$ sudo fusermount -u /home/me/Android_transfer

Should I use something other than `jmtpfs` to mount the MotoG's storage? If so, what do you advise?

If not, how to fix or further debug?

TomRoche · 04-05-2015, 08:54 PM

Quote:

Originally Posted by TomRoche

summary: When I connect my Android phone to my Debian laptop, the laptop detects the phone via both `nautilus` and `jmtpfs -l`. However my attempt to mount the phone's storage with `jmtpfs` fails with

Code:

-6PTP_ERROR_IO: failed to open session, trying again after resetting USB interface

solution: don't use `sudo`!

Code:

me@it:~$ fusermount -u /home/me/Android_transfer
me@it:~$ ls -al ~/Android_transfer/
total 8
drwxr-xr-x  2 me me 4096 Apr  5 20:08 .
drwxr-xr-x 50 me me 4096 Apr  5 21:09 ..

me@it:~$ jmtpfs ~/Android_transfer/
Unable to open ~/.mtpz-data for reading, MTPZ disabled.
Device 0 (VID=22b8 and PID=2e82) is a Motorola Moto G (ID2).
Android device detected, assigning default bug flags
me@it:~$ ls -al ~/Android_transfer/
total 4
drwxr-xr-x  3 me me    0 Dec 31  1969 .
drwxr-xr-x 50 me me 4096 Apr  5 21:09 ..
drwxr-xr-x 12 me me    0 Oct  2  4448648 Internal storage
me@it:~$ ls -al ~/Android_transfer/Internal\ storage/
total 0
drwxr-xr-x 12 me me 0 Oct  2  4448648 .
drwxr-xr-x  3 me me 0 Dec 31  1969 ..
drwxr-xr-x  2 me me 0 Aug 31  2024 Alarms
drwxr-xr-x  3 me me 0 Aug 26  2014 Android
drwxr-xr-x  3 me me 0 Feb 13 19:50 DCIM
drwxr-xr-x  2 me me 0 Aug 31  2024 Download
drwxr-xr-x  2 me me 0 Aug 31  2024 Movies
drwxr-xr-x  2 me me 0 Aug 31  2024 Music
drwxr-xr-x  2 me me 0 Aug 31  2024 Notifications
drwxr-xr-x  2 me me 0 Aug 31  2024 Pictures
drwxr-xr-x  2 me me 0 Aug 31  2024 Podcasts
drwxr-xr-x  2 me me 0 Aug 31  2024 Ringtones

me@it:~$ fusermount -u /home/me/Android_transfer
me@it:~$ ls -al ~/Android_transfer/Internal\ storage/
ls: cannot access /home/me/Android_transfer/Internal storage/: No such file or directory