in /boot/config.txt i deleted the "#" in front #dtoverlay

I ended up fixing the problem on my own.

The issue was that Drastic and Retroarch were trying to render the resolution at 640W x 480H, which would cause squishing issues.

By adding in:

hdmi_cvt 480 640 60

Into the config.txt, I was able to give drastic another resolution to render at, solving the issue. For retroarch, I made the auto fullscreens resolution the 480W x 640H that the display was native to, which also solved the squishing.

@mykee said in Running electron apps inside RetroPie / ES:

Hey all!
I'm trying to run Tetr.io inside of the retropie as an electron app, but some errors about display are getting sent to me on the shell. I plan on running emulation station and the game inside it if possible but I don't have read the docs about the console lists fully (yet). My first step is to be able to run the game natively but it's displaying an error about displays, which is down below stated.

Pi Model or other hardware: B Model 4
Power Supply used: Samsung 5V
RetroPie Version Used : 4.8
Built From: Pre made SD Image on RetroPie website.
USB Devices connected: Keyboard and Dualshock 4 Controller
Controller used: PS4
Error messages received:

[916:0417/001957.934669:ERROR:ozone_platform_x11.cc(244)] Missing X server or $DISPLAY [916:0417/001957.934831:ERROR:env.cc(257)] The platform failed to initialize. Exiting.

File: pi@retropie:~/RetroPie/teto-armv7l

Seems like i already had questioned it about it on here and since there was no arm build at the time, i have gotten one now, so running it really is the issue to me right now.

Afaik and according to this

https://github.com/raspberrypi/linux/issues/5780

It doesn't affect all pi models. The pi 3 which I have is affected unfortunately 🙂

@windg
It does make no difference. Display patch is installed too. But the problem is no longer so important to me. But thank you very much =)

You can force a certain resolution on the screen, though depending on your version of RetroPie that option may not be available through the Raspi Config menu (as it was recently removed).
What kind of TV is that (model) ? Can you try setting it to Game Mode so it's not doing any image pre-processing ? I think it's i the Picture settings of the TV, under Picture style (?).

Most likely the display drivers disabled the Pi4's GPU drivers by modifying the bootloader configuration.
Can you post your /boot/config.txt file ? How did you install the display drivers ?

Can you post your config.txt boot configuration ? What version of RetroPie are you using ?

The cmdline.txt options in the linked topic will only rotate the console terminal, not the entire display. To rotate also EmulationStation's screen or the emulator video output, you need additional configurations - some details are in this topic.

@sleve_mcdichael something something gift horse in the mouth :)

@sdkyaker what do you mean "it does not allow you"?

can you please supply your /boot/config.txt file including the change that doesn't work?

also tell us what display you're using (model, manufacturer, etc)

@jamrom2 Definitely. When the cable company upgraded to the 'slide' version, I played with it endlessly.slide box

I'd advise you to use the official RetroPie image when installing RetroPie and not some 3rd party image.

@goalieadam said in Display error, can't launch games:

Not sure how to mark as resolved but this has fixed it.

Edit the topic title (by editing your first post) and append/prepend [Solved].

Did, by any chance, use rpi-update on your system ? What kernel version does your system have (run uname -a to find out ) ?

@GreenHawk84 yeah that should work