Yeah Now ppa:tista/gdm-testing PPA is under heavy tests... :)
Today I've added some installation scripts for it. You want to know what happens?
From the initial release, we've experienced ugly issue: Bevause of Ubuntu's "VT" must be always "7" as graphical login, But gdm 3.2.x had ignored that actually... X(
Some reasons exists behind this fact... 1st is the differences between Ubuntu and Fedora. Yeah well known, Fedora usually run tty1 as graphical environments, on the other hand, Ubuntu needs "tty7" for any display manager to show greeter. 2nd is what caused in plymouth configurations, especially detection of display manager. Today Ubuntu didn't concern about any supports for gdm 3.2 or higher since they already have another DM "LightDM" you know... So plymouth configurations goes along with it naturally right? But it's really messing us!! In fact, /etc/init/plymouth.conf never have any detection for gdm.
So today I've tried to update some installation scripts to fix those issues above... :)
This release could have custom plymouth.conf to be able to replace original plymouth's one. Installer would rename the stock file to back-up (named "plymouth.conf.dpkg-dvrt"), Then copy my custom one to /etc/init automatically...
And then, this scripts could add new line to /etc/gdm/custom.conf like "FirstVT=7" to set highest priority for detection VT console tty7...
Finally that combination would help your issue like "splash zombie" and "strange VT"... hehehe... :P
Now I'm testing this change on Precise to check out whether it happens side-effect critical bugs "show-stopper" or not...
Anyway the Fight still goes now and forever?!