[Bug 1380041] Re: Erasing NTFS formatted flash raises AttributeError: 'NoneType' object has no attribute 'get_cached_property'

[Chris J Arges]

Hello Vladimir, or anyone else affected,

Accepted usb-creator into trusty-proposed. The package will build now
and be available at http://launchpad.net/ubuntu/+source/usb-
creator/0.2.56.3 in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: usb-creator (Ubuntu Trusty)
       Status: Triaged => Fix Committed

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1380041

Title:
  Erasing NTFS formatted flash raises AttributeError: 'NoneType' object
  has no attribute 'get_cached_property'

Status in usb-creator package in Ubuntu:
  Fix Released
Status in usb-creator source package in Trusty:
  Fix Committed

Bug description:
  When I'm trying to erase USB flash I'm get popup with following stack
  trace:

  org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/dbus/service.py", line 707, in _message_cb
      retval = candidate_method(self, *args, **keywords)
    File "/usr/share/usb-creator/usb-creator-helper", line 218, in Format
      parent_dev = _get_parent_object(udisks, device)
    File "/usr/share/usb-creator/usb-creator-helper", line 49, in _get_parent_object
      parent = partition.get_cached_property('Table').get_string()
  AttributeError: 'NoneType' object has no attribute 'get_cached_property'

  To workaround this problem I've done:
  1. Remove existing partition on flash drive in GParted.
  2. Create new FAT32 partition for whole flash drive in GParted.
  3. Unplug/plug flash drive.
  4. Start usb-creator-gtk --- "Make Startup Disk" now active and works.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: usb-creator-gtk 0.2.56.2
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  Uname: Linux 3.13.0-35-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sat Oct 11 12:00:17 2014
  InstallationDate: Installed on 2014-01-01 (282 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  SourcePackage: usb-creator
  UpgradeStatus: Upgraded to trusty on 2014-04-27 (166 days ago)

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