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    • Soxbrother

      Getting picture when 2 screens are connected. 7" screen and 27"monitor
      Help and Support • helpandsupport dual screen pi4 b • • Soxbrother

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      Soxbrother

      @mitu said in Getting picture when 2 screens are connected. 7" screen and 27"monitor:

      I've tried swapping the cables, and it worked from the first try.

      I now have picture on the 7" screen, which is now connected to hdmi1 and when I connect the 27" monitor to hdmi0, I get picture on the monitor. The 7" screen then displays a rainbow color screen and then goes blank.

      The 7" screen only displays the launching screen, when I play a game.

      I immediately tried an arcade game, the launching screen displayed, but then went back to the main menu.
      I've tried other consoles, they all seem to work.

      I've tried 2 other arcade games, which seems to work.

      Coincidence or not, the game I tried first has a bezel overlay.
      Maybe the monitor can't handle that for some reason ?

      I will disable the bezel and see if it runs then.

    • DarkPaladin

      RPi4 dual screen with touchscreen
      Help and Support • touchscreen dual screen waveshare pi 4b • • DarkPaladin

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      mitu

      @darkpaladin said in RPi4 dual screen with touchscreen:

      The immediate issue I have is with the FKMS driver. The Waveshare touchscreen requires me to disable the FKMS driver and use its own configuration, especially since I want to rotate 90 degrees. But if I disable the FKMS driver, RetroPie runs into the SDL/EGL error and will not load the GUI.

      On the PI4, disabling the (f)kms overlay/driver will result in an unsupported configuration, with any GPU drivers disabled. You won't be able to use RetroPie with it.

      Is there a different driver I should try loading, or do I need to submit a feature request and wait?

      No, there isn't. Not sure why the Waveshare screen needs the standard Pi4 GPU drivers disabled - maybe because of rotation support ? In any case, using both screens will require X11/X.org running, at which point you may be able to rotate the display/screens using xrandr/arandr. It's not a supported configuration for RetroPie, but it may help you using both screens at the same tie.

    • GLFish

      RetroPie output to hdmi and be able to use display hats for other info
      Projects and Themes • dual screen pi4 8gb pi4 cartridge eink • • GLFish

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    • psybertech

      ubuntu based retropie dual screen - marquee on 2nd screen
      Help and Support • marquee ubuntu 20.04 dual screen • • psybertech

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      mitu

      What's your use case ? When do you want to display the marquee - gameplay/game browsing ?

    • roccos_mdrn_life

      dual screen - system display
      Help and Support • dual screen • • roccos_mdrn_life

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      mitu

      You'll have to ask the image author(s) for guidance, we don't support 3d party images - https://retropie.org.uk/forum/topic/3/read-this-first.

    • DJMoss

      2 Screens 2 Purposes
      Projects and Themes • dual screen crt theme creation png menu art • • DJMoss

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    • A Former User

      Raspberry Pi 4 main screen fall back to secondary screen?
      Help and Support • dual screen raspberry pi 4 nintendo switch question screen • • A Former User

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      mitu

      @Riverstorm No, just select HDMI and that's all. If you have any issues, post in the stickied topic.

    • bron9mann

      Dual Monitor Pi 4
      Help and Support • pi4 dual screen • • bron9mann

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      Methanoid

      Did you ever get this working? I just came to realise that a mirrored monitor setup with 2 screens would be really handy for me on my Pi4 with Retropie.

    • philipmather

      Dual monitors? Pointers?
      Ideas and Development • dual screen multiplayer multiplaying screen area screen • • philipmather

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      philipmather

      @philipmather ditto /opt/retropie-player1/e...s.../scripts/inputconfigurations.sh has hard coded rootdir.

    • errtu

      dual screen setup with official 7" touchscreen
      Help and Support • touchscreen hdmi dual screen • • errtu

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    • Romstar

      Using Rpi3b+ output video hdmi two Monitors MAME / Punchout!! Super Punchout!! Arm Wrestling, Nintendo Playchoice 10
      Help and Support • punch out arm wrestling nintendo dual dual screen two monitors • • Romstar

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    • svera

      [FBA] Show only one monitor in dual monitor games
      Help and Support • finalburn alpha retroarch dual screen • • svera

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      sirhenrythe5th

      @svera so does AdvanceMame 😉

    • honzapat

      Ds emulator dual screen
      Help and Support • dual screen nintendo wii ga • • honzapat

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      honzapat

      Or just say i have 2 screens and on 1 i want the main going thin like character moving and ike this and on the other the second screen where is map inventory etc and then if its possible if i dont play ds games it will be mirrored

    • nicolas6t76

      Retropie Ubuntu dual screen?!
      Help and Support • ubuntu retropie dual screen • • nicolas6t76

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      nicolas6t76

      I tried this script but it is not stable and the emulation returns to the 1st screen

      #!/bin/bash

      This script will run a program in fullscreen mode (no borders or title bar etc) on a second monitor. It can used for many programs and on either the primary or secondary monitor

      #This is the executable file or path
      PROGRAM='emulationstation'

      This is the output of wmctrl -l for the program that we are using

      NAME='emulationstation'

      This is the device name of the monitor we want to display the program on

      DEVICE='HDMI-1'

      If you want the program to be fullscreen on your second monitor this variable should be the width of your primary monitor

      PRIMARYWIDTH=1920

      Run the program , then wait a bit before carrying on If your program doesn't load in time then try increasing this value

      $PROGRAM > /dev/null 2> /dev/null & disown && sleep 3

      Set the Open GL environment variables Set the vertical blanking to on

      __GL_SYNC_TO_VBLANK=1

      And make sure OpenGL syncs the correct monitor

      __GL_SYNC_DISPLAY_DEVICE="$DEVICE"

      Do we want a screensaver

      #SDL_VIDEO_ALLOW_SCREENSAVER=0

      Set the dimensions of the program in the monitor

      wmctrl -r "$NAME" -e '0,'$PRIMARYWIDTH',-1,-1,-1'

      Maximize it

      wmctrl -r "$NAME" -b toggle,fullscreen,maximized_vert

    • Pekeltje

      Official screen AND hdmi
      Help and Support • hdmi 7 inch display dual screen retropie 4 pi3 • • Pekeltje

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      Daantjuhh132

      @gojira said in Official screen AND hdmi:

      My goal is to make a mini gaming machine that I can use "portably" as well as plugged into a monitor.

      I am also trying to do this! Did you succeed? If so, I'm very curious to hear about it!

    • Iduna

      Dual screens?
      Help and Support • dual screen two player splitscreen • • Iduna

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