https://bugs.freedesktop.org/show_bug.cgi?id=101387
--- Comment #4 from Michel Dänzer michel@daenzer.net --- (In reply to Carlo Caione from comment #3)
What kind of artifacts in plymouth?
That could be a plymouth bug. I've noticed that it doesn't seem to call drmModeCrtcSetGamma to make sure the display CLUTs are initialized to appropriate values.