This was the thread on Amigans:
https://www.amigans.net/modules/newbb/viewtopic.php?topic_id=10082Be prepared for a long read, and not all of it is about making RX cards visible in CFE, it's also about all the other fixes and tricks kas1e made for CFE.
But with some patience, it looks like you can find solutions (I don't use an RX card in the X1000 myself, so no guarantees from me ;-)).
Best regards,
Niels