Recalbox on a 5 inch HDMI display = how to set the resolution?

[dormonid]

I got a 5 inch hdmi monitor with resolution of 800x480 for a project and tried to run recalbox on it.

At first, the screen was all messed up, since the Pi coudnt find the proper resolution. So I found online how to change the screen resolution via config.txt.

So I held shift and via noobs edited the config.txt with this parameters:

hdmi_force_hotplug=1 (not sure why they asked to do this command, but I did it anyway)
hdmi_group=2
hdmi_mode=87
hdmi_cvt= 800 480 60 6 0 0 0

And the result was this:
https://drive.google.com/file/d/0B875tKE2-GugczFxOXhOa2dnYW8/view?usp=sharing

The problem happens when I tried to start any game from any emulator from any console.

It doesnt keep the same resolution. It looks like this:
https://drive.google.com/file/d/0B875tKE2-GugZEVWcG9LUnRDR2s/view?usp=sharing

So... where else do I need to go to config the resolution? Where else I have to check ? And how?

Thanks for helping!

[ian57]

@dormonid : in recalbox.conf change videomode to default instead

global.videomode=default

see https://github.com/recalbox/recalbox-os/wiki/TFT5-Screen-HDMI-(EN) for details... everything is explained