[Bug 1495017] Re: ubiquity crashed with dbus.exceptions

[junior0]

I try to install daily build 15.10 (20150913) and i cannot do it because this error, but at july and august I have this system 
on my notebook and it was rather well.....
My notebook always in legasy mode (not UEFFI) (Aspire S7,  Intel® Core™ i7-3517U CPU @ 1.90GHz × 4 , Intel® Ivybridge Mobile
64-bit)

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Title:
  ubiquity crashed with dbus.exceptions

Status in ubiquity package in Ubuntu:
  Confirmed

Bug description:
  Lubuntu Wily i386 20150911 fails to install on disk.

  ProblemType: Crash
  DistroRelease: Ubuntu 15.10
  Package: ubiquity 2.21.29
  ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0
  Uname: Linux 4.2.0-7-generic i686
  ApportVersion: 2.18.1-0ubuntu1
  Architecture: i386
  CasperVersion: 1.364
  Date: Sat Sep 12 06:11:40 2015
  ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
  InterpreterPath: /usr/bin/python3.4
  LiveMediaBuild: Lubuntu 15.10 "Wily Werewolf" - Alpha i386 (20150911)
  ProcCmdline: /usr/bin/python3 /usr/lib/ubiquity/bin/ubiquity --only
  ProcEnviron: Error: [Errno 13] Permission denied: '/proc/1733/environ'
  PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', '--only']
  SourcePackage: ubiquity
  Title: ubiquity crashed with dbus.exceptions.DBusException in call_blocking(): org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 7 matched rules; type="method_call", sender=":1.18" (uid=999 pid=1733 comm="/usr/bin/python3 /usr/lib/ubiquity/bin/ubiquity --") interface="(unset)" member="GetDevices" error name="(unset)" requested_reply="0" destination=":1.6" (uid=0 pid=1437 comm="/usr/sbin/NetworkManager --no-daemon ")
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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