reComputer J40 without HDMI signal after booting

after an update on ubuntu reComputer J40, the system starts inkls screen until nvida, and then it shot done the hdmi signal. The system is running and reachable throught putty

I check the boot settings, any other idears?

Check if the installed NVIDIA drivers:

nvidia-smi

Also check the currently installed NVIDIA driver version:

dpkg -l | grep nvidia

thanks - did a full reflash - now its running

Hi, I’m new to this forum and to these devices. I recently got a Jetson J40 and performed an update. However, after the update and restarting, Ubuntu no longer boots.

What I’ve noticed is that during the initial boot process, I can see the cursor, but when it’s supposed to fully start, there’s no video output.

Could you help by sharing links or guidance on how to perform a reflash or a factory reset configuration?

Please follow this guide to reflash the os. Please do not update the NVIDIA L4T version easily, it may cause the driver to be overwritten