Ubiquity crashes if I check format option from "Something Else"

[Sergio Benjamim]

Ubiquity crashes if I uncheck format option from "Something Else" advanced install option.

Steps to reproduce:

1. I created in Gparted:
    Partition Table in MBR (msdos), NON-EFI system
    /dev/sda1 -- 1024 MiB EXT4
    /dev/sda2 -- 30 GiB Btrfs
    /dev/sda3 -- 205 GiB Btrfs
    /dev/sda4 -- 4 GiB linux-swap
2. Opens Ubiquity for install (or try "Install session" from the start)
3. Select "Something Else" in Installation Type
4. Double click in sda2 partition, Use as: "Ext4 journaling file system", Mount Partition: /, and click OK (DO NOT select for format it)
5. Partition will be marked to formatting, so double click it again, and change to "btrfs journaling file system", check Format option (it will be already checked) and click OK
6. Partition will not be checked to formatting, so check format columm
7. Ubiquity will crash

If you try it in "Install session", then an apport pop-up appears, you click in Continue and you will go to a black screen, it's possible to see only mouse icon.

Ctrl+Alt+F1 to tty1, and you will see tty1 display and mouse icon (you can move it, strange behavior).

There are no effective report to launchpad, both in "Install session" and desktop session.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.17.2
ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4
Uname: Linux 3.12.0-7-generic x86_64
ApportVersion: 2.12.7-0ubuntu2
Architecture: amd64
CasperVersion: 1.336ubuntu1
Date: Thu Dec 19 22:45:50 2013
InstallCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/xubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20131219)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[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/1262910

[Sergio Benjamim (sergio-br2)]

I changed Bug Description, so now it can be reproduced (for sure, tested many times).

[Sergio Benjamim (sergio-br2)]

Still happens, x86 iso.

[Simon Quigley (tsimonq2)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Ubuntu version. If you test it and it is still an issue, kindly upload the updated logs by running only once:
apport-collect 1262910

and any other logs that are relevant for this particular issue.

[Launchpad Janitor (janitor)]

[Expired for ubiquity (Ubuntu) because there has been no activity for 60 days.]