Nvidia Xavier Nx motherBoard Issues

Hi. We purchased a Xavier NX motherboard last September 2021. We are trying to read data from TX ,RX on GPIO or UART port. However, it doesn’t work. but it works when we try the same operations on Nvidia Nano card. When we try to connect the Xavier motherboard from RX, TX and Uart ports, we cannot see the sensor data. In addition, when we look at it with an oscilloscope, we cannot make sense of the signals. When we talked to Nvidia’s distributor in Turkey, they told us to report the problem from Devlepor Blog, to look at the solutions in the forum; however, if the problem is not resolved, we can return the product. in no way we were able to solve the problem in the end.
We request immediate attention on Xavier NX motherboard products under Warranty for the product.

Just want to know what is the exact pin that you want to observe here? You said GPIO and UART port, so every of the GPIO on the board fails to output signal?

Is the board still able to boot up?

yes.every of the GPIO on the board fails to output signal.
yes .board able to boot up.

Are you still able to get the uart serial console log from the board?

no.we dont able to get the serial console console log from board

Did you ever successfully dump the log before? What is your setup to dump the log?

What do you mean by successfully dumping the log before.

Are those pins always broken from the beginning of the day your bought it or it was just broken one day suddenly?

Since the first day we bought the product, the same problem continues.We tried many methods but it didn’t work.I also told the distributor of the product, but no solution was found.I request you to send the product back and we want it to be tested. We have bought 4 Jetson nano before. It is the first time we encounter such a problem.
Best regards…

Hi,

We will provide you the method to send the board back. But that needs to be done after we check your setup first.

  1. Please share us what is your method to check the GPIO signal.

  2. Please share the method how you dump the uart serial console log.

  3. If the board is still able to boot up, please share me the dmesg.

Also, do you have other jetson NX boards or modules on your side to do cross validation?

For example, if you have multiple jetson NX devkit, please swap the modules on it and see if you can locate the problem is on module or carrier board.

no we have only one Xavier Nx board. we have no change try if the problem is on module or carrier board.
ı send below picture from study.
We made the connections as described in this video. link :Tutorial: NVIDIA Jetson Xavier NX UART Serial Dump using Arduino Uno - YouTube

But we could not get the data. In addition, when you remove the GND pin from the Arduino, the power goes out in the jetson and the XAvier NX overheats.
answer:

  1. If the board is still able to boot up, please share me the dmesg.
  1. Please share us what is your method to check the GPIO signal.
    we chack oscilloscope .but we dont understand

  2. Please share the method how you dump the uart serial console log.

Hi,

Please share text file for any log file…

3, Ardunio connection RX,TX,GND

after this installition we cant see any thing ardunio serial port viwer.

Please try to use usb-ttl to check the uart log.

https://www.jetsonhacks.com/2019/04/19/jetson-nano-serial-console/

And you didn’t configure any pinmux or the linux sysfs to control the gpio? You just connected it and check signal?

ı can try this Jetson nano ,its runnig but . not runnig on Xavier board

We would like to return this product for your checking