Kiosk on Buster Desktop Pi 4B

[MinistryofSillyWalks]

Hi,

I am trying to create a Chromium kiosk on my Pi 4B, running Buster. Basically the exact specs of the Kiosk are:

1. Boot without showing anything
2. Start Kiosk (if Wifi available--> if not open wifi menu)
3.User can now work only in Chromium on the webpage and cannot leave the browser or manipulate it to get to the Raspbian UI

I manage to clean the whole boot information output (console stuff, logos etc..) , after trying a gazillion other tutorials and failing, here:

viewtopic.php?t=270219


Then I installed the kiosk with this tutorial here:

https://pimylifeup.com/raspberry-pi-kiosk


Now I am at the point where
a) the Kiosk is running
b) the boot process is clean

BUT unfortunately, I still see the Desktop appear for 2 seconds, before Chromium starts. And I dont want that.

I tried to "disable" the Desktop by turning off the power of the USB hub that powers the screen via uhubctl and setting it up as init script.
Here I have the same problem as with the kiosk: the script only starts after loading the Desktop.

I also tried to change the boot option to terminal autologin, but then my kiosk mode dissappears completely AND I boot into the terminal which is not better than the desktop.

Any ideas how I can make it appear like the thing is booting directly into Chromium?

Many thanks

[MiscBits]

No idea about the screen showing but one issue I never got around was the user using the keyboard to exit Chromium...

Not sure if this was ever addressed as we gave up at the time.

[klricks]

This will show only black screen for 2 seconds.
Open autostart:

Code: Select all

sudo nano /etc/xdg/lxsession/LXDE-pi/autostart

Comment out and put # before 1st 2 lines like this:

Code: Select all

#@lxpanel --profile LXDE-pi
#@pcmanfm --desktop --profile LXDE-pi
chromium-browser -kiosk www.raspberrypi.org

As mentioned alt F4 will close Chromium. This seems to be hard-coded in chromium as alt F4 still works even when the alt key is disabled for the rest of the system.
ctrl alt T will open a terminal unless you disable alt key.
Also right click menu is available if they exit chromium.

[MinistryofSillyWalks]

Hey thank you, that works fine! Does not the same as uhubctl was supposed to, but it serves the purpose well!

Thank you