Steve:
There is no 'welcome to PGen' screen that I have ever seen...
There is if you factory reset PGen.
It's roughly "Welcome to PGenerator" and under that you see the IP-adress assigned to PGen, etc.
This flashes in and out in regular intervals, just like the bugged screen.
ConnecTED:
The PGenerator will display a colorful ramp, followed by a lot of rolling text and a black screen.
This is
after bootup.
(I know what a Linux boot-screen looks like)"Input Signal Plus"
(AKA HDMI "Deep Colour") is enabled.
The correct micro-HDMI input is used.
(verified in EDID)The cable should be HDMI 2.0, I'll try a different one to be sure. It worked fine before I tried out the various templates though.
I'll probably just re-flash PGen, just a bit annoying is all.
I don't think the device should bug-out because of template testing? Maybe it's because the templates where made for older versions of PGen?