[issue43694] Tkinter scaling does not work on some linux systems

[A_D]

A_D <aunderscored at gmail.com> added the comment:

Thanks so much for your help. To anyone in the future trying to figure this out: Apparently the default opensuse fonts (which are noto) are _not_ scalable. In my testing the following is enough to solve the issue.

```
tk.font.nametofont('TkDefaultFont').configure(family='DejaVu Sans', size=10)
```

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43694>
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