Raspberry Pi 4

For information, Recalbox IS NOT compatible with Raspberry Pi 4 yet.
Pour information, Recalbox N'EST PAS encore compatible avec le Raspberry Pi 4.

The Recalbox Team.

Lag on HDMI HD lcd screen

  • Hello.
    I'm a long time Recalbox user. I have now a GBPi3 which is perfectly running excepting the screen that has some lag on menu and games (not video)
    Here we see it on the "rainbows" on the menu
    And there when lightnings (3 obliques lines)

    Can anyone help ?

    I found this, would it be usefull ? https://github.com/recalbox/recalbox-os/wiki/TFT5-Screen-HDMI-(EN)


  • @pegoncology can you tell which screen you have ?

  • @pegoncology can you paste your config.txt ?
    Fbcp wouldn't help, it's for spi tft screens

  • @Substring
    Thanks for helping

    "HD" games are running smoothly (PS1, DC, PSP), it occurs into ES menus and with SNES and MD for example.

    Here is my config.txt

    uncomment if you get no picture on HDMI for a default "safe" mode



    uncomment to force a specific HDMI mode (this will force VGA)


    comment to get jack audio


    Using /etc/modules is deprecated and no longer supported on 4.4 kernel

    So manually enable audio



    force hdmi while the tv can take time before sending the signal on the hdmi output


    uncomment for composite PAL


    uncomment for lirc-rpi


    if you plug your tv at the same time as your rpi and that the rpi switches from the hdmi or give a low resolution because tv had no enough time to initialize it


    uncomment if you don't want the rainbow at startup






  • @pegoncology can you get the supported HDMI modes using tvservice ?

  • @Substring
    I don't understand your question, what do you mean ? (You may tell in French, I posted here to have more advices but I'm French-native too ;-))
    I use this image on a GBPi3, it is exactly the same image I use on my Nespi on TV without any problem.
    So I assume the problem is with the GBPi3 screen

  • Staff

    @Pegoncology you should have post your question in french in the french section. Don't forget that the devel team is mostly french ;)... so the support can ben in french too ;)

    anyway, @Substring is asking to run the tvservice command on you Pi to see the detected video mode :

    # tvservice -a -s
    state 0x12000a [HDMI DMT (35) RGB full 5:4], 1280x1024 @ 60.00Hz, progressive
         PCM supported: Max channels: 2, Max samplerate:  48kHz, Max samplesize 24 bits.

  • This post is deleted!

  • @ian57 @Substring
    state 0x12000a [HDMI CEA (4) RGB lim 16:9], 1280x720 @ 60.00Hz, progressive
    PCM supported: Max channels: 2, Max samplerate: 48kHz, Max samplesize 24 bits.

  • @pegoncology i'd rather have tvservice -m CEA and tvservice -m DMT

  • @Substring
    tvservice -m CEA =
    Group CEA has 15 modes:
    mode 1: 640x480 @ 60Hz 4:3, clock:25MHz progressive
    mode 2: 720x480 @ 60Hz 4:3, clock:27MHz progressive
    mode 3: 720x480 @ 60Hz 16:9, clock:27MHz progressive
    (prefer) mode 4: 1280x720 @ 60Hz 16:9, clock:74MHz progressive
    mode 5: 1920x1080 @ 60Hz 16:9, clock:74MHz interlaced
    mode 6: 720x480 @ 60Hz 4:3, clock:27MHz x2 interlaced
    mode 7: 720x480 @ 60Hz 16:9, clock:27MHz x2 interlaced
    (native) mode 16: 1920x1080 @ 60Hz 16:9, clock:148MHz progressive
    mode 17: 720x576 @ 50Hz 4:3, clock:27MHz progressive
    mode 18: 720x576 @ 50Hz 16:9, clock:27MHz progressive
    mode 19: 1280x720 @ 50Hz 16:9, clock:74MHz progressive
    mode 20: 1920x1080 @ 50Hz 16:9, clock:74MHz interlaced
    mode 21: 720x576 @ 50Hz 4:3, clock:27MHz x2 interlaced
    (native) mode 22: 720x576 @ 50Hz 16:9, clock:27MHz x2 interlaced
    mode 31: 1920x1080 @ 50Hz 16:9, clock:148MHz progressive

    tvservice -m DMT =
    Group DMT has 14 modes:
    mode 4: 640x480 @ 60Hz 4:3, clock:25MHz progressive
    mode 5: 640x480 @ 72Hz 4:3, clock:31MHz progressive
    mode 6: 640x480 @ 75Hz 4:3, clock:31MHz progressive
    mode 8: 800x600 @ 56Hz 4:3, clock:36MHz progressive
    mode 9: 800x600 @ 60Hz 4:3, clock:40MHz progressive
    mode 10: 800x600 @ 72Hz 4:3, clock:50MHz progressive
    mode 11: 800x600 @ 75Hz 4:3, clock:49MHz progressive
    mode 16: 1024x768 @ 60Hz 4:3, clock:65MHz progressive
    mode 17: 1024x768 @ 70Hz 4:3, clock:75MHz progressive
    mode 18: 1024x768 @ 75Hz 4:3, clock:78MHz progressive
    mode 36: 1280x1024 @ 75Hz 5:4, clock:135MHz progressive
    mode 47: 1440x900 @ 60Hz 16:10, clock:106MHz progressive
    mode 48: 1440x900 @ 75Hz 16:10, clock:136MHz progressive
    mode 49: 1440x900 @ 85Hz 16:10, clock:157MHz progressive

  • @pegoncology Can you enable DrwFPS and make sure all runs at 60FPS ?

  • @Substring
    I have to put this :
    bool name="DrawFramerate" value="false" to "true" into es_settings.cfg ?

  • @pegoncology no, you can do it from the ES menu, in advanced settings i think

  • @Substring
    It is well running at 60fps but I didn't find DrwFPS into ES menu

  • @pegoncology paramètres avancés > afficher le framerate

    pan pan q q !

  • @Substring
    Yes sorry, that's what I did. It shows well 60fps.
    But when on ES menu, if I change system and if it is the "first" time I go to the system page, it shows around 40fps then it goes to 60fps in 1 sec. Afterwards I go back to this system and it is well 60fps

  • @pegoncology it's not stable on more powerful boards, don't worry

    now for your screen ... too bad, i'd say :/

  • @Substring
    The builder told me we should wait for firmware update but indeed too bad...

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