Jetpack 5.0.2 RT kernel cannot open desktop

[y.gnauh]

Hi, I have applied the real-time patch and built the kernel following the official guide. But there is no more detail about how to flash the new image to the board. After building the kernel (finish steps mentioned in the guide), I replaced the image from kernel_out to the original image, and re-flashed the board, However, the board cannot open the desktop (can open the command line mode and uname -r gives 5.10.104-rt63-tegra)

Could you please help me figure out what’s happening. Is there some steps I missed?

[WayneWWW]

What is your result of “lsmod”?

[y.gnauh]

Thank you for your reply.
It gives Module Size Used by
I thought the module is missing here but I am not sure how to build modules for the real-time kernel

[y.gnauh]

could you please tell me how to build modules for the real-time kernel? thanks

[carolyuu]

Hi y.gnauh,

Please reference below topic steps to build display kernel.

Nvidia_kernel_display_driver_source.tbz2 not support real-time kernels

Hi 417383384, Please re-tar the source packages and clean build to try again with below steps: Build kernel: $ export CROSS_COMPILE_AARCH64_PATH=<toolchain-path> $ export CROSS_COMPILE_AARCH64=<toolchain-path>/bin/aarch64-buildroot-linux-gnu- $ ./kernel-5.10/scripts/rt-patch.sh apply-patches $ mkdir kernel_out $ ./nvbuild.sh -o $PWD/kernel_out Build display kernel: $ export LOCALVERSION="-tegra" $ export IGNORE_PREEMPT_RT_PRESENCE=1 $ make \ modules \ SYSSRC=<KERNELSRC> \ SY…