I’ve been using this Samsung 4K screen for 3 years. I never adjusted any of the parameters for making things larger. I just got used to the small fonts, and blew things up by application when I needed to.
I’ve been doing some reading in anticipation of getting a new laptop maybe with hidpi. Learned stuff about changing resolution.
With Gnome-Tweak tool->Windows->HIDPI Window scaling, can blow up everything in Gnome. Can only have integer values, so with 2, I can double the size. But after several years of smaller sizes I don’t really like this. Might need it on the laptop though.
With Firefox and Thunderbird, use config editor and find layout.css.devPixelsPerPx. This can have non integer values and 1.5 in Thunderbird is better for me. For Firefox I currently have it set at 1.3.
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