[Bug 57610] No windows are shown when using a dual monitor setup

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57610

--- Comment #10 from Rémi Bernon  ---
Hmm... looks like it's actually using XRandR 1.4, which I assumed was getting
the position right. It's apparently not, and that may be some issue coming from
XRandR configuration itself.

Could you paste what `xrandr` command outputs?

Also maybe adding +xrandr to WINEDEBUG channels could add useful information,
in case we're doing something wrong in our xrandr enumeration.

We could probably decide to check whether display mode vs monitor rect differ,
but I think they are supposed to match, and if they don't we can't really know
whether we should trust monitor rects over display modes.