Homebrew Question Citra: Can't get rid of borders in full screen

[HideoKojima]

I'm using Citra on Linux.
I'm using one big screen layout that only shows the main screen.
When in full screen I get two black bars on the left and the right.

I tried to change the settings but there's no fit to screen feature.

I tried adjusting the config.ini file, but I'm not sure which values I should change.

https://community.citra-emu.org/t/fullscreen-borders-in-fhd/53837/6

I tried following the above tutorial but it would show the second screen.
How can I remove those borders in full screen?

Thanks

 

[HideoKojima]

Okay solved, I had to change top screen settings to 1920x1080.