Two monitors detected by the System, despite only having one

As the title says.

This may also be causing errors with applications such as applications running under Wine because after reinstalling Wine, I got the “Broken NVIDIA RandR detected, falling back to RandR 1.0” error.
How do I fix this?

Processor: Intel Core i7-3770S x 8
Graphics: NVIDIA GeForce GTX 1050 Ti
Graphics Driver Version: 530.41.03
Windowing System : X11


It seems to be a byproduct of XRandr… why?
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