https://bugzilla.kernel.org/show_bug.cgi?id=106431
--- Comment #3 from Daniel Vetter daniel@ffwll.ch --- Created attachment 191661 --> https://bugzilla.kernel.org/attachment.cgi?id=191661&action=edit attempt at fixing pre-nv50 pageflip events
Ok, I made an attempt at correctly fixing this, i.e. the 3rd option I laid out above. Patch attached, please test.
Note that I'll be on vacation next 2 weeks, so Thierry needs to take over any follow-up work.