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[Reece <reece@xxxxxxxxx>]

Kiori's solution didn't work for me.

I ran mtp-detect 10 times, always failing with the same LIBMTP PANIC
message as above.

Ubuntu 14.04, libmtp 1.1.6, Sansa Clip Zip (appropriate libmtp rules
already present).

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https://bugs.launchpad.net/bugs/1247572

Title:
  Nokia Lumia 620 (WP8) fails to mount reliably via gvfs-mtp in nautilus

Status in GVFS:
  Fix Released
Status in Nautilus:
  New
Status in gvfs package in Ubuntu:
  Confirmed
Status in nautilus package in Ubuntu:
  Invalid

Bug description:
  Summary: You have to run mtp-detect in terminal until you get output
  similar to the excerpt in the steps to reproduce section, then you can
  connect via nautilus as usual.

  -----

  I just got a Nokia Lumia 620 as a backup phone. I'd say I can mount my
  Nexus 4 reliably with Ubuntu via nautilus using gvfs-mtp. Users with
  Android devices like the Nexus 4 still get error messages on a
  regularly basis of the device not being able to mount, but replugging
  the device mostly fixes the issue.

  However, the experience with the Lumia 620 is far worse (the desktop
  sometimes freezes) and the workaround I found to get the device to
  work very crude.

  I was prompted with a apport-collector window when nautilus froze
  during testing and send a report (this happend twice), but it didn't
  take me to Launchpad to open a report. I can also seen no bug
  regarding that topic that I am subscribed to.

  The Lumia 620 itself was added to libmtp with this report:
  http://sourceforge.net/p/libmtp/bugs/780/

  ## Steps to reproduce:

  1. Reboot (or cold boot) computer and phone. Login to computers destop and unlock the phone by entering PIN.
  2. Plug the phone via USB into the computer. (Cable works with Nexus 4 or another Android device.) The phone will give a signal that it is connected to the computer.
  3. Try to open the phone in Nautilus. My desktop either freezes (cold boot) here or nautilus hangs (reboot).

  3.a) If nautilus hangs: Open a terminal with Ctrl+Alt+T and kill nautilus with xkill.
  3.b) If your desktop froze: Go to a virtual terminal with Ctrl+Alt+F1.
  3.c) If you just get an error message: Open a terminal with Ctrl+Alt+T and go to step 4.

  4. Execute 'mtp-detect' (from mtp-tools package) from terminal (either
  via Dektop or virtual terminal). If you get one of the following
  messages wait a few seconds and try again.

    $ mtp-detect
    Unable to open ~/.mtpz-data for reading, MTPZ disabled.libmtp version: 1.1.6

    Listing raw device(s)
    Device 0 (VID=0421 and PID=0661) is a Nokia Nokia Lumia WP8.
       Found 1 device(s):
       Nokia: Nokia Lumia WP8 (0421:0661) @ bus 2, dev 22
    Attempting to connect device(s)
    ignoring libusb_claim_interface() = -6PTP_ERROR_IO: failed to open session, trying again after resetting USB interface
    LIBMTP libusb: Attempt to reset device
    LIBMTP PANIC: failed to open session on second attempt
    Unable to open raw device 0
    OK.

  ---

    $ mtp-detect
    Unable to open ~/.mtpz-data for reading, MTPZ disabled.libmtp version: 1.1.6

    Listing raw device(s)
    Device 0 (VID=0421 and PID=0661) is a Nokia Nokia Lumia WP8.
       Found 1 device(s):
       Nokia: Nokia Lumia WP8 (0421:0661) @ bus 2, dev 22
    Attempting to connect device(s)
    PTP_ERROR_IO: failed to open session, trying again after resetting USB interface
    LIBMTP libusb: Attempt to reset device
    LIBMTP PANIC: failed to open session on second attempt
    Unable to open raw device 0
    OK.

  ---

  Repeat this until you get a long list of scrolling text that ends with
  something similar to this:

    MTP-specific device properties:
       Friendly name: Windows Phone
       Synchronization partner: (NULL)
       Battery level 74 of 100 (74%)
    libmtp supported (playable) filetypes:
       Folder
       Text file
       ISO MPEG-1 Audio Layer 3
       Audio Video Interleave
       JPEG file
       Microsoft Windows Media Audio
       Advanced Audio Coding (AAC)/MPEG-2 Part 7/MPEG-4 Part 3
       Microsoft Windows Media Video
       Abstract Album file
       Abstract Playlist file
       GIF bitmap file
       JFIF file
       Portable Network Graphics
       TIFF bitmap file
       BMP bitmap file
       MPEG-4 Part 14 Container Format (Audio+Video Emphasis)
       MPEG-4 Part 14 Container Format (Audio Emphasis)
       DOC file
       XLS file
       PPT file
    OK.

  ---

  5. Go to a virtual terminal and do 'sudo service lightdm restart'.
  Login again, you hear the phone reconnecting to your computer and
  should now be able to open your phone in nautilus seeing the phones
  internal storage and the SD card (if there is) als sub devices.

  6. Unplug the phone from the computer and start with step 2 if you
  want to connect the phone again.

  ## Additional information

  $ lsb_release -rd
  Description:	Ubuntu 13.10
  Release:	13.10

  $ apt-cache policy gvfs gvfs-backends mtp-tools
  gvfs:
    Installed: 1.18.2-0ubuntu1
    Candidate: 1.18.2-0ubuntu1
    Version table:
   *** 1.18.2-0ubuntu1 0
          500 http://de.archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages
          100 /var/lib/dpkg/status
  gvfs-backends:
    Installed: 1.18.2-0ubuntu1
    Candidate: 1.18.2-0ubuntu1
    Version table:
   *** 1.18.2-0ubuntu1 0
          500 http://de.archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages
          100 /var/lib/dpkg/status
  mtp-tools:
    Installed: 1.1.6-2
    Candidate: 1.1.6-2
    Version table:
   *** 1.1.6-2 0
          500 http://de.archive.ubuntu.com/ubuntu/ saucy/universe amd64 Packages
          100 /var/lib/dpkg/status

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