bug#32207: 26.1; can't set window position with emacs 26.3

[martin rudalics <rudalics@gmx.at>]

 > No, it fails to position the initial frame period.  I start
 > one emacs on the "default/initial" screen, another a few
 > screens away.  Neither obeys the command line position.

I was confused by your earlier text ...

 >> them on desk 1/page 1 and desk1/page 5 of my FVWM
 >> configuration, and they both start on desk 1/page 1, at the

... and so I now presume that the desk/page specifications have no
relevance to the problem.  Right?

 >> Does positioning a new frame in a running Emacs session via
 >> (make-frame '((left . x) (top . y)))
 >
 > Just tried it with x and y within the physical desktop and a
 > few screens away and neither worked.

Aha.  So let's concentrate on 'make-frame' from a running Emacs
session to avoid dealing with the startup rigmarole.

 > However, if I kill fvwm and use make-frame, it WORKS!  Even
 > off screen, which I can see when I restart fvwm.
 >
 > This is interesting, as I'm running the same fvwm as with
 > the previous emacs, where this worked.  Also xterms position
 > themselves properly.  Just tried glxgears, mplayer and it
 > works with those too.  Xv works within the physical screen,
 > it doesn't off-screen.
 >
 > Maybe Emacs changed the way it requests the screen position
 > to a way that fvwm doesn't like.  I'll need to try with
 > another window manager.

We already have a new window manager dependent issue with Bug#31745.
Just that fvwm is not listed there IIRC.

martin