Comment 9 for bug 1821263

Right, well, the Cubic does not hang any longer, so this bug has been fixed! I have booted the iso in a VM, and it does appear that the custom changes I have made do not appear to be apparent at first. The Ubuntu boot screen is still the same, even though I can see the changes made in the plymouth files.

My assumption was that the changes would show after the installation on VM, but the iso crashes when I try to install it.