How to: Early boot Splash Screen??

RedMarsBlueMoon

Hi Everyone!
I'm trying to add my own png image as a early boot screen but all variations I try of this method:
https://yingtongli.me/blog/2016/12/21/splash.html
fails.

I tried adding -T 7 and -T1 and I tried a few other things but nothing I try seems to work.

As I'm booting to CLI I didn't follow the step in the guide that said to:
"Disable the login prompt by running ```
systemctl disable getty@tty1

Not sure if that's the show stopper.

Is there another way of doing this that works?
I tried doing a rc.local thing but that's too late in the startup sequence for the effect I'd like.

Btw, the is for RPi4 + Buster

Cheers
Fred

mitu

RetroPie already has a splashscreen option which you can customize (including the duration), why don't you use it ?

RedMarsBlueMoon

Because it comes up pretty late for me. Only at around the 2/3 to 3/4 mark of the startup time.
Otherwise I would.

mitu

Starting the service as early as the 'local-fs' target doesn't always work, if the framebuffer is not initialized, then you can't display anything. For the Pi4, the display is re-initialized when the KMS/DRM framebuffer emulation is loaded, so any images shown before that will simply be erased.

You can try using the modifying the existing asplashscreen service (defined in /etc/systemd/system/asplashscreen.service) and see if changing the dependencies will make it start earlier, but the result might not be what you want.