(In reply to comment #1) > It seems the identified failed assertion is not the prime root of Gnome > Shell and KDE not launching. A previous commit must be the culprit for the > other problem (I'm tracking it down right now). However, commit > 5de41575a127eb8a6a0fe5c71a73b372f9b89f53 does prevent glxgears from running > as it should. Forget about what I just said, I made a mistake, wrongly resync before last build. Retesting right away.