If I'm not mistaken, Xft will still print a warning when it is
started on a display without the RENDER extension -
in _XftDisplayInfoGet(), the first call to XRenderFindVisualFormat()
is guarded by a call to XRenderQueryExtension(), but then regardless
of info->hasRender, we later clal XRenderFindFormat(), which will
print a warning.
Fixed in CVS.