Comment 51 for bug 1361951

I changed the status back to New because this just occured performing a Vivid install for upgrade testing (see attached screenshot compilation). I'll try to add more info ASAP but I'd refer you to my comment #13 for now regarding the ability to reproduce this bug.

I'd have to amend that though because you can see from these newest screenshots that I was working on /dev/sda8 so rather than saying those criteria "must" exist I think it's more accurate to say that the freeze is "more likely" to occur if those criteria exist.

However the one criteria that absolutely must be met is that the existing partition must contain either an existing OS or data because once the installation is Quit and the partition is reformatted using Gparted the installation can be completed as desired.

I suspect that reports of ubiquity freezes during anything other than manual partitioning are not duplicates of this bug so new bug reports should be filed.

This freeze always displays "Creating ext4 filesystem for / in partition #1 of SCSI2 (0,0,0) (sda) ..........." either on the screen shown in these screenshots or on the later screen as shown in this screenshot:

https://launchpadlibrarian.net/183255225/Screenshot%20from%202014-08-26%2022%3A26%3A27.png

Sorry I haven't found a sure fire way to reproduce this bug. Sometimes it happens and other times it doesn't.