Screen fractional Scaling in Ubuntu and Spyder start from Python

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The default GUI in Ubuntu20 allows to scale all screens but does not allow separate settings per monitor. To circumvent:
sudo apt-get install gdm3
sudo dpkg-reconfigure gdm3
Note: gdm3 is also not perfect but better than nothing.

Starting Spyder from Python (without conda env)
$python
from spyder.app import start
start.main()

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