Hi !
I solved the problem.
I modified the ‘hardware/nvidia/platform/t19x/jakku/kernel-dts/common/tegra194-p3509-disp.dtsi’ file.
&head0 : nvidia,dc-connector = <&sor0>; -- > nvidia,dc-connector = <&sor1>;
&head1 : nvidia,dc-connector = <&sor1>; -- > nvidia,dc-connector = <&sor0>;
Then recompile the kernel and flush the kernel to the NX.