screen goes blank when loading gma500_gfx (atom D2500)

[One Thousand Gnomes]

> fbcon is loaded so it isn't an issue.
> 
> I tried 3.10 kernel initially (the above messages are from it), next
> I tried 3.13 kernel too, and that one behaves exactly the same.
> 
> As far as I remember, this system never worked with graphics well.
> Previous kernel (from which I updated) was 3.2 which had no
> gma500 module (local build).
> 
> What are the steps to debug this further?

Check you have X86_SYSFB and SIMPLEFB disabled

Boot with drm.debug=6

collect the logs