https://bugs.freedesktop.org/show_bug.cgi?id=91704
--- Comment #20 from Andy Furniss adf.lists@gmail.com --- (In reply to Christian König from comment #19)
Nice catch!
And Andy is right this could explain some of the problem we had with VDPAU interop as well, cause there the device is also opened from multiple sides at the same time.
New version of the patch seems good for startx.
Also tried harder than yesterday with vdpau interop and it also seems good.