In 17.10 there is no Xorg by default. 17.10 runs under Wayland.
There was a key combination to switch to magnified display. Setting a
fixed resolution does not change the visuals but the coordinate system
of the mouse. After figuring out about the magnification and resetting
it, the mouse worked f
I assume that the mouse is handled by Xorg, which does not use MPFR. So
I don't see how this could be related. This is just a coincidence, and
the cause of the problem is somewhere else. This bug should be closed as
invalid.
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Played around with magnification.
Pressing Super-Alt-8 somehow creates this situation.
Increasing the magnification to 200%, pressing Super-Alt-8 and reverting
to 100% remedies the effect.
Thus: An issue that I cannot explain.
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