[konsole] [Bug 373232] Horizontal lines with fractional HiDPI scaling

[Wolfgang Bauer]

https://bugs.kde.org/show_bug.cgi?id=373232

--- Comment #175 from Wolfgang Bauer <wbauer at tmo.at> ---
Btw, forgot to mention this:
(In reply to Potomac from comment #171)
> (In reply to Christoph Feck from comment #170)
> > Potomac, are you sure it was a Plasma update that broke it? The net is full
> > of font rendering regression reports since Qt was updated to version 5.14.0.
> 
> Yes, the problem started with the update of plasma (5.17.4 to 5.17.5) and
> KDE softwares (19.12.0 -> 19.12.1),
> 
> on these new versions the "high dpi support" has been enabled by kde
> developers, which triggers problems on my configuration (24 inch monitor
> 1920x1080, DPI 96, graphic card : amd radeon HD4650 pcie, radeon driver open
> source) :
> 
> +    // enable high dpi support
> +    QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps, true);
> +    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);
> +
> 
> https://cgit.kde.org/konsole.git/commit/
> ?id=54820e0ff2745add8b8353f538ad67d66b657d49

This change was in konsole 19.12.0 already, not in the update to 19.12.1...

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