Yet another scaling question

[Gadgetguy]

Hi all,

I am always experimenting with new ways to do retro gaming.

So, my newest acquisition is a 3.5" touchscreen (connecting via HDMI) with case - so the pi + screen form one unit and can be easily powered from a power pack for some portable gaming :)

The screen has a native resolution of 480x320, so I used the following in config.txt

hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=87
hdmi_cvt=480 320 60

In theory this should work - but in practice I get a squished screen (so circles for example are ovals).

Why is my screen squished when I use the exact resolution of the screen?

And what is the best way to get this fixed?

Thank you for any pointers!

PS: I do not use the touchscreen for this , I do not need it for retropie

[mitu]

Try adding more parameters to hdmi_cvt, in particular aspect might be needed so the display can be scaled correctly - https://www.raspberrypi.org/documentation/configuration/config-txt/video.md.

hdmi_cvt = 480 320 60 6

[Gadgetguy]

Thank you - very helpful (as always)!