Jetson AGX Xavier not booting/Displaying

Hello,
I am working on Jetson AGX Xavier on jetpack 5.1.3 and ubuntu 20.04. Yesterday I powered it off but when I turned it on again it was displaying on my screen anymore. I turns on, I can see the light, I can put it in recovery mode and exit recovery mode but it is not displaying.
I tried to put it in recovery mode to repair it thanks to SDK Manager, but when I click repair/uninstall it is written “no sdks are installed”, so I cannot repair anything.
Does it look familiar to you ? Have you any clue ?
Side note : my jetson/SD card was quite full.

I tried to put it in recovery mode to repair it thanks to SDK Manager, but when I click repair/uninstall it is written “no sdks are installed”, so I cannot repair anything.

That is because the host PC you are using cannot install jetpack5.1.3. What host PC are you using there? Is it ubuntu 20.04 or 18.04 host?

Side note : my jetson/SD card was quite full.

Full disk space may lead to GUI not shown. You could use serial console to access it and clean out some space first.

Hello,
Thanks for the reply.
My host PC is Ubuntu 20.04. I formatted my SD card and followed the NVIDIA tuto to flash my jetson but when resetting the board, it was written :
“Failed to start configure USB flashing port for device mode”
So even if the gui started again (good news) I could not use my mouse or keayboard.
I am going to try to flash my board with sdk manager this morning, hope it works.

Learn to use the serial console through uart first…