Can I set different DPI for two displays in my system?

Marius Gedminas marius at
Mon Mar 14 06:25:18 UTC 2016

On Mon, Mar 07, 2016 at 03:20:39PM +0100, Łukasz Maśko wrote:
> Hello.
> I have a laptop with 12.5" display and FullHD resolution, which means 176dpi 
> density. I also use, in parallel, another FullHD 21.5" monitor, giving me 
> almost half of the density as on the main screen. You can easily imagine, that 
> since DPI is set the same for both screens, the window moved from one screen 
> to another changes its physical size, which is pretty logical - although a bit 
> annoying.
> Is it possible to configure X in such way, that each screen would work 
> according to its own, real physical DPI?

Have you tried Wayland?  I hear it's supposed to support this kind of
setup, but I cannot say if the support is already implemented, or merely
theoretically possible.

Marius Gedminas
Mosher's Law of Software Engineering:
        Don't worry if it doesn't work right.
        If everything did, you'd be out of a job.
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