Installing Ubuntu desktop on target (DRIVE AGX)

So is there any more steps after ubuntu desktop installation ?
If not how to make sure that DRIVE OS 5.2 is correctly installed ?

DRIVE OS 5.2 is installed successfully if SDK Manager runs through and shows it’s completed.
Next step you can try with the sample applications.

Here is my SDK Manager on my host machine (Ubuntu 18.04)

It’s completed per your DRIVE AGX "No board connected" - #5 by mohammed.el-yaagoubi.
Please read through the developer guide and create another topic if any questions or issues.

I had the same log which means update failed. And the reason is that the date of ubuntu is not right. By modify the date, you can apt update successly and install gdm3 successlly and get the display

Please create another topic for this. Thanks.