[Bug 1798929] [NEW] Installer Crash on format checkbox

[Jason Yundt]

Public bug reported:

OS: Kubuntu 18.10 amd64 Live USB
ubiquity version: 18.10.12

Steps to reproduce:
1. Open the Kubuntu 18.10 installer.
2. Get to the manual partitioning screen.
3. Select an already existing ext4 partition.
4. Click "Change..."
5. From the "Use as" drop-down list, select "Ext 4 journaling file system".
6. Make sure that the "Format the partition:" checkbox is unchecked.
7. Click "OK".
8. Click "Format?" checkbox for the previously selected ext4 partition.

Expected behavior:
The checkbox becomes checked.

Actual behavior:
A popup window informs the user that the installer has crashed with the following error:

Traceback (most recent call last):
File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/PartitionModel.py", line 66, in setData
item.partman_column_format_toggled(value.toBool())
AttributeError: 'int' object has no attribute 'toBool'

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: ubiquity 18.10.12
ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
Uname: Linux 4.18.0-10-generic x86_64
ApportVersion: 2.20.10-0ubuntu13
Architecture: amd64
CasperVersion: 1.399
CurrentDesktop: KDE
Date: Sat Oct 20 01:34:57 2018
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity quiet splash ---
LiveMediaBuild: Kubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
Importance: Undecided
Status: New


** Tags: amd64 apport-bug cosmic kubuntu ubiquity-18.10.12

** Attachment added: "/var/log/syslog and /var/log/partman as requested in the guidelines"
https://bugs.launchpad.net/bugs/1798929/+attachment/5203187/+files/bug.tar.gz
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https://bugs.launchpad.net/bugs/1798929

Title:
Installer Crash on format checkbox

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[Jean-Baptiste Lallement]

*** This bug is a duplicate of bug 1687637 ***
https://bugs.launchpad.net/bugs/1687637

** This bug has been marked a duplicate of bug 1687637
Kubuntu installer crashes when checking format box
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You received this bug notification because you are a member of Kubuntu
Bugs, which is subscribed to ubiquity in Ubuntu.
https://bugs.launchpad.net/bugs/1798929

Title:
Installer Crash on format checkbox

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1798929/+subscriptions