ubiquity crashed with AttributeError in keyboard_layout_timeout(): 'NoneType' object has no attribute 'change_layout'

[Jackson Doak]

By changing the keyboard layout multiple times, ubiquity breaks.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: ubiquity 2.14.1
ProcVersionSignature: Ubuntu 3.8.0-16.26-generic 3.8.5
Uname: Linux 3.8.0-16-generic x86_64
ApportVersion: 2.9.2-0ubuntu5
Architecture: amd64
CasperVersion: 1.330
Date: Thu Apr 4 18:38:41 2013
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InstallCmdLine: file=/cdrom/preseed/xubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
InterpreterPath: /usr/bin/python3.3
LiveMediaBuild: Xubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130403)
MarkForUpload: True
ProcCmdline: /usr/bin/python3 /usr/lib/ubiquity/bin/ubiquity --greeter --only
ProcEnviron: Error: [Errno 13] Permission denied: '/proc/3093/environ'
PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', '--greeter', '--only']
SourcePackage: ubiquity
Title: ubiquity crashed with AttributeError in keyboard_layout_timeout(): 'NoneType' object has no attribute 'change_layout'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1164343

[Launchpad Janitor (janitor)]

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