We purchased the Nvidia JETSON TX2 Developer kit and installed gnome to drive the Velodyne LiDAR 80-VLP-16-A on the self-driving robot car Clearpath Jackal.
After that, when Jackal powers on, a boot error appears every time and ‘[FAILED] Failed to start Light Display Manager.’ and ‘[FAILED] Failed to start Snappy daemon.’ appears.
And like an infinite loop, it is automatically moved to tty1 and tried to solve it with various commands, but the screen flickers and is unstable without being able to type commands in the tty related window. (It is unstable even if we open tty2, tty3, etc.)
Even if we wait a long time for the tty to stabilize and run GUI by entering the command sudo startx’, it does not work normally, such as only the background screen and black screens that can perform other functions.
Open a terminal (the terminal screen looks black at this time, but I just typed in the command) and type ‘sudo dpkg-reconfigure ubuntu-desktop’, the wallpaper turns black and the icons are visible. But the wifi connection doesn’t work and it doesn’t work properly.
To solve this problem, we thought that initialization was the best way to solve this problem, but it was impossible to access it.
To solve this, we created an Ubuntu bootable USB. However, even if we plugged the created USB directly into the jackal, Ubuntu was not reinstalled, so I tried to open the BIOS window. We pressed F2/F10/Delete, etc., but the BIOS window does not appear. In the meantime, Jackal freezes and restarts, but the BIOS cannot be opened.
How do I reset Ubuntu boot USB to TX2 and reinstall Ubuntu? Which button do I need to press to open the BIOS window to make the USB recognized? If I have to enter a command, it takes a long time and is difficult to get out of the tty and open the terminal, so I am curious about any other method other than entering the command.