Hi,
pleased to hear you’re trying mir-kiosk and sorry that you’re having difficulties. But you’ll have to provide some more information before I can help.
You’ve clearly seen the changes needed to enable kernel graphics, but for Mir to run as a daemon on classic systems…
Specifically,
After that you should see the “orange flash” indicating that Mir has started successfully.
If that’s not what you’re seeing then the logs may provide a clue:
HTH