Die Frontplatte scheint deaktiviert zu sein

[santa]

do you switch power off, wait a longer time(hours) and then test with serial cable?

- - - Aktualisiert - - -

For HDMU: you need to always add "rm i2s" before restarting tuner. This is missing in your script.

what do you mean exactly?

after changing setenv, we have to rmmod i2s.ko?