Thanks I didn't know about this menu.
I uncheck the nv_disable box and boot with selected options but unfortunately it didn't work.
I had this screen locked for a while:
Then this strange screen:
I don't know where is the problem :-/
same problem and probably same solution but i'm not sure how to do.
nv_disable=1 is at the top of the configuration panel like this:
"Boot Args:dart=0 nv_disable=1"
I tried "Boot Args:dart=0 nv_disable=0", "Boot Args:dart=1 nv_disable=1" and ""Boot Args:dart=1 nv_disable=0" without...