[kmail2] [Bug 461653] kmail doesn't send when running over ssh

[Volker Kuhlmann]

https://bugs.kde.org/show_bug.cgi?id=461653

--- Comment #7 from Volker Kuhlmann <bugz57 at top.geek.nz> ---
I don't understand why testing this from a text console has any merit. A Linux
text console (e.g. ctrl-alt-f3) can only render characters, not graphics. The
DISPLAY variable is undefined. No X-application is going to start.
If you must, the kmail error is:
> kmail
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it
was found.
This application failed to start because no Qt platform plugin could be
initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen,
vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.

This was predictable (and it's a pretty bad error message after doing something
stupid).
E.g. trying to start an xterm:

> xterm
xterm: Xt error: Can't open display: 
xterm: DISPLAY is not set

The error message is spot on. This will work when the earth stops spinning.

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