emulationstation not using the resolution set in config.txt

xk42

Just bought a 4.0 inch lcd display from amazon. However I'm struggling with the resolution.

hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=87
hdmi_drive=2
hdmi_cvt 480 800 60 6 0 0 0
display_rotate=3

Here is when retropie boots up

[img]https://i.imgur.com/kpWev7Z.jpg[/img]
When emulationstation starts
[img]https://i.imgur.com/Fn4AGGl.jpg[/img]

I also tried running emulationstation --resolution 480 800. But it was still showing the same thing.

However if I set display_rotate=0. Which is in portrait mode, then everything works fine.

mitu

EmulationStation has also a --screenrotate parameter (with the same values as display_rotate from config.txt), try using it in conjunction with the --resolution. Are you using a Pi4 ?

xk42

Yes I'm using Pi4 with retropie-buster-4.5.13-rpi4.img.

Okay this worked.

sudo /opt/retropie/supplementary/emulationstation/emulationstation --screenrotate 3 --resolution 800 480

Fantastic! Thank you. I was just mixing up the width/height I guess as I was just looking at the values in config.txt

mitu

I think the PI4 lacks (at the moment) all the options available for display_(hdmi_lcd)_rotate.
As pointed out by a forum user a few weeks back, the Pi4 doesn't allow rotation by 90 and 270 deg when using the VC4 FKMS V3D driver (the default on Pi4) - https://www.raspberrypi.org/documentation/configuration/config-txt/video.md.

xk42

Oh that's interesting. I'm using the default driver, I guess rotation did not work for emulationstation when it was done through config.txt. However adding the --screenrotate, it definitely worked.

I'm also looking at the script they provided to set it upt.
https://github.com/goodtft/LCD-show/blob/master/MPI4008-show

sudo echo "dtoverlay=ads7846,cs=1,penirq=25,penirq_pull=2,speed=50000,keep_vref_on=0,swapxy=0,pmax=255,xohms=150,xmin=200,xmax=3900,ymin=200,ymax=3900" >> ./boot/config.txt.bak

Guess I need to be using the ads7846 driver instead of the default one. For now I'm just happy it worked. Thanks.