Comment # 7 on bug 100995 from Paul

(In reply to Michel Dänzer from comment #5)
> Is this a regression from an older version of Mesa? If so, can you bisect?

Don't know, never had any working previous versions due to outdated kernel and
drivers (kubuntu 16.10). This is as close as I've gotten > 3.0 to work on this
machine by upgrading to 17.04 (4.10 kernel).