ubiquity crashed with DBusException in call_blocking(): org.freedesktop.DBus.GLib.UnmappedError.NmManagerError.Code5: The connection was not active.

Status changed to 'Confirmed' because the bug affects multiple users.

I have also hit this issue in 12.04 w/ Ubiquity version 2.10.20. For me, this occurs in the Wifi setup page. To reproduce:

1. Choose 'Connect to this network' in the Wireless setup page. Enter password.
2. Click Connect
3. While system is trying to connect to wireless network, click 'Stop'. Observe nothing happens.
4. Click 'Stop' again. Installer crashes at this point.

Hi,

Jesse provides a fix at https://code.launchpad.net/~wenchien/ubuntu/precise/ubiquity/lp883615/+merge/137510 .
It would be nice if someone can review and merge it.

This bug was fixed in the package ubiquity - 2.13.8

---------------
ubiquity (2.13.8) raring; urgency=low

  [ Colin Watson ]
  * Honour base-installer/kernel/altmeta when deciding which kernels to
    install or keep installed.

  [ Dmitrijs Ledkovs ]
  * Moving question dialog to use a glade ui file, made it non
    "re-entrant" safe, i.e. it started to remember previous action area
    buttons. The fix is to clear action area, all other parts of the
    dialog are always reset with something fresh. (LP: #1087823)
  * ubiquity-dm: compiz actually doesn't have bg-image.
  * ubi-partman: Do not allow to select encryption without lvm
    (LP: #1093957).
  * Automatic update of included source packages: debian-installer-utils
    1.94ubuntu1, flash-kernel 3.0~rc.4ubuntu29, localechooser
    2.49ubuntu1, netcfg 1.68ubuntu17, partman-auto 105ubuntu2, partman-
    auto-lvm 46ubuntu2, partman-base 163ubuntu1, partman-ext3 74ubuntu1,
    partman-jfs 38, partman-partitioning 89ubuntu1, partman-target
    80ubuntu1, preseed 1.57ubuntu2, user-setup 1.47ubuntu1.

  [ Scott Kitterman ]
  * Change encrypt home question to checkbox and indent it under the login
    option to make it clear it is a sub question to the login option
    (LP: #1066225)

  [ Jesse Sung ]
  * Fix multiple issues with Back/Stop and Continue/Connect buttons on
    wireless page (LP: #883615).
 -- Dmitrijs Ledkovs <email address hidden> Wed, 09 Jan 2013 15:40:19 +0000

Hello jrcsdev, or anyone else affected,

Accepted ubiquity into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/ubiquity/2.10.24 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!

It works fine, thanks.

The verification of this Stable Release Update has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.

This bug was fixed in the package ubiquity - 2.10.24

---------------
ubiquity (2.10.24) precise; urgency=low

  [ Jesse Sung ]
  * Fix multiple issues with Back/Stop and Continue/Connect buttons on
    wireless page (LP: #883615).

  [ Kent Baxley ]
  * Hide the back button at the beginning of oem-config (LP: #1095692).
 -- Colin Watson <email address hidden> Thu, 10 Jan 2013 12:32:41 +0000