ERROR SUDO IN JETSON TK1 (ubuntu is not in the sudoers file. this incident will be reported)

Robotics & Edge Computing Jetson & Embedded Systems Jetson TK1
1

hellow…

i have an error with SUDO:

sudo su
password:

ubuntu is not in the sudoers file. this incident will be reported

i have this error, when uncomentted this line

# Allow members of group sudo to execute any command
%sudo  ALL=(ALL:ALL) ALL

i change to:

# Allow members of group sudo to execute any command
sudo  ALL=(ALL:ALL) ALL

how can solution this error?
in any solutions that found say that GRUB but in jetson tk1 noT have GRUB,
in other solution enter as root but i don’t have this password I test with “ubuntu” “admin” and nothing

su -
password: 
su authentication failure

HOW CAN SOLUTION IN THE JETSON TK1 ??
HOW CAN ENTER AT RECOVERY MODE(GRUB) OR ENTER OF SYSTEM FOR MODIFIED THE sudoers IN JETSON TK1?
thanks

2

You probably flashed before this happened. If you do not unpack the sample rootfs with sudo, or if the file system type unpacked to on the host is not a native Linux file system, then sudo will fail. If this is the case you will need to erase the rootfs directory on the host and unpack again using sudo, then “sudo ./apply_binaries.sh”, and flash again using sudo.

If you used some sort of external storage for the location of the flash software you will want to cd there and run “df -H -T .” and see if the type is ext4. If it is something like VFAT or NTFS it is not capable of understanding Linux permissions and will break sudo the same as if you unpacked with sudo.

Additional note: “su -” does not work on Ubuntu (direct login of root is locked out on Ubuntu). This can be a bit annoying. You can do “sudo -s” (there are a couple of variations on that theme).