ubiquity crashed with DBusException in call_blocking(): org.freedesktop.DBus.GLib.UnmappedError.NmSettingWirelessSecurityErrorQuark.Code1: Failed to determine AP security information

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

This is also occurring in 12.04 and happens when entering the wrong Wifi PSK password. I'm surprised this doesn't affect more people.

Adding the OEM priority task since this affects many OEM pre-loads if a user enters the wrong Wifi password during OEM config.

Assigning Brian to take a look and triage.

Should be a simple matter of handling the exception.

I'm having trouble reproducing, in any event, something like this should fix it

diff -c /home/james/src/ubiquity/ubiquity/plugins/ubi-wireless.py /tmp/buffer-content-30623O6g
--- /home/james/src/ubiquity/ubiquity/plugins/ubi-wireless.py 2012-03-19 13:47:23.602061000 -0400
+++ /tmp/buffer-content-30623O6g 2012-06-14 12:17:18.309495838 -0400
@@ -131,7 +131,10 @@
     def plugin_on_next_clicked(self):
         frontend = self.controller._wizard
         if frontend.next.get_label() == self.connect_text:
- self.nmwidget.connect_to_ap()
+ try:
+ self.nmwidget.connect_to_ap()
+ except dbus.DBusException:
+ return False
             return True
         else:
             frontend.connecting_spinner.hide()

Diff finished. Thu Jun 14 12:17:18 2012

I think this exception is thrown not just because the password is _wrong_, but because it's not even valid. IIRC wpa passwords need to be 8 characters, for example, and wep passwords have to be hex strings. Network Manager expects the frontend to sanitize its inputs based on the AP info, and ubiquity doesn't do that.

new, better patch:

http://paste.ubuntu.com/1042533/

It was suggested that we don't use a popup and instead just block the next step of the installer, similar to what nm-applet does. The change is in this branch: https://code.launchpad.net/~jm-leddy/ubiquity/lp929092

This bug was fixed in the package ubiquity - 2.11.8

---------------
ubiquity (2.11.8) quantal; urgency=low

  [ James M. Leddy ]
  * Only allow a user to proceed on the networking screen if he entered a valid
    password. This prevents a nm dbus exception. (LP: #929092)

  [ Mario Limonciello ]
  * Don't let oem-config crash from an invalid server return on the timezone
    page.

  [ Colin Watson ]
  * Simplify get_casper slightly.
  * Depend on humanity-icon-theme for the DEP-8 tests so that the
    gtk-missing-image icon is available.
  * Fix auto-update OpProgress instance to handle the python-apt 0.8 API,
    which doesn't pass a percent argument to update (LP: #1018759).
 -- Colin Watson <email address hidden> Fri, 29 Jun 2012 18:02:16 +0100

Reverting to In progress, the fix is in the branch but hasn't been uploaded to -proposed yet.

Hello Frank, or anyone else affected,

Accepted ubiquity into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/ubiquity/2.10.18 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 change the bug tag from verification-needed to verification-done. If it does not, 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!

SRU verification for Precise:
I have reproduced the problem with ubiquity 2.10.16 in precise-updates and have verified that the version of ubiquity 2.10.18 in -proposed fixes the issue.

Marking as verification-done

This bug was fixed in the package ubiquity - 2.10.19

---------------
ubiquity (2.10.19) precise-proposed; urgency=low

  * Automatic update of included source packages: base-installer
    1.122ubuntu7.1, debian-installer-utils 1.88ubuntu2.1, flash-kernel
    2.28ubuntu42.2. (one-time update from precise-proposed) (LP: #1021293)
 -- Stephane Graber <email address hidden> Mon, 30 Jul 2012 10:36:51 -0400