this post was submitted on 19 Mar 2024
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So, does Linux just not support those displays?
No, electron, xwayland, GNOME cause problems.
KDE with fractional scaling on Wayland works well.
Not sure about GNOME today, but they hid it away in the past and forcing 120%/150% made everything blurry
Electron and Xwayland don't cause problems. GNOME is the only source of problems on Linux.
Meanwhile, macOS has been handling high-dpi displays with zero issues since 2012.
This is just a theory but I assume they just dont scale, they have their UI sized to a set size and thats it.
You assume incorrectly.
The way it works on macOS is that you select the ‘looks like’ resolution to determine the size. For example if you have a 4k monitor you can set a ‘looks like’ resolution of 2560x1440. Internally it always renders at 2x, so in this case it will render to 5120x2880. That image is then scaled down to the actual display resolution, e.g. 3480x2160. It’s basically supersampling.
So they do the same as GNOME? Scale double and then scale down?
Okay that makes sense as you need more pixels to work with.