Re: Emacs's set-frame-size can not work well with gnome-shell?

[martin rudalics]

> Is there anything more I can do to facilitate fixing this?

We'd first need a somewhat wider audience here.  Are all the colleagues
running into these problems on GNOME or tunneling into it, do they all
use a HiDPI display?  Could one of them try to change the WM for
experimenting so we can at least determine that this is a mutter-only
problem?  Could we find at least one guru able to build mutter so she or
he can debug it - I don't have the faintest idea how to do that.  Maybe
there's also someone still running Metacity who could tell us whether
the same problems exist there already.

Here with Xfce on Debian I'm using a minibuffer child frame that moves
along with the selected window, resizes exactly like the normal
minibuffer window and disappears whenever it's not active.  So child
frames work reliably here.

OTOH, as we've seen with Bug#38452, mutter also seems to have problems
processing calls for normal Emacs frames as requested.  So we really
should try to contact Florian Müllner (address@hidden) - maybe he
could give us at least some hints on how to proceed or what to test.
But this means that at least two or three people using Emacs on GNOME
shell should participate, so this doesn't look like some sort of stray
issue, occasionally encountered by one or two users as with
https://gitlab.gnome.org/GNOME/mutter/issues/840.

martin