1. Q: Can the TX2 core module be flashed using JetPack?
A:If you are using an NVIDIA official development board and the TX2 module already contains a bootable system, you can use JetPack for flashing.If the TX2 core module is purchased separately, or if you are using an RTSO series carrier board, please refer to the “RTSO Series Product System Flashing Guide” for the correct flashing procedure.
2. Q: How can I tell whether the TX2 has entered Recovery Mode during system flashing?Do I need to put TX2 into Recovery Mode when using JetPack to install application libraries only?
A:The method for entering Recovery Mode varies depending on the carrier board. Please refer to the corresponding carrier board user manual and follow the instructions. After completing the steps, run the lsusb command on the host PC.
If you see an entry labeled “NVidia Corp.”, the TX2 is in Recovery Mode.When using JetPack to install application libraries only, it is not necessary to put the TX2 into Recovery Mode.
3. Q: After flashing the system, there is no display output when connecting a monitor.
A:Please check your HDMI connection. It is recommended to connect the monitor directly using an HDMI cable.If you are using an HDMI-to-VGA adapter, make sure it is an externally powered adapter.If there is still no display, use a serial console tool on the PC to check the debug UART output and confirm whether the system has booted. If the system did not boot, please verify whether the system flashing was successful.
4. Q: We want to use the CAN interface on the RTSO series carrier board. Is there a reference example?
A:Please refer to the document “RTSO Series Carrier Board CAN Interface Test Method.”
5. Q: How do I test the bandwidth of the Gigabit Ethernet port on the carrier board?
A:Please refer to the document “Network Bandwidth Testing Using Iperf.”
6. Q: How do I configure the TX2 wireless interface to work in AP mode?
A:Add the following line to /etc/modprobe.d/bcmdhd.conf:
options bcmdhd op_mode=2
Then reboot the system.
7. Q: How do I back up and restore the TX2 system?
A:Please refer to the “TX2 Backup and Restore Guide.”
8. Q: NVIDIA Download Center URL
A:https://developer.nvidia.com/embedded/downloads
9. Q: How can I configure the CAN interface to be automatically initialized after TX2 boots?
A:Add the relevant configuration commands to rc.local.
10. Q: How can I check CPU and GPU utilization on TX1/TX2?
A:For r28.x systems, run:
sudo ~/tegrastats
For r32.x systems, run:
tegrastats
11. Q: I only see four CPU cores in the system monitor on TX2. How do I enable the other two?
A:Run the following command on TX2:
sudo nvpmodel -m 0
For details, refer to the following NVIDIA forum post:
https://devtalk.nvidia.com/default/topic/1000345/two-cores-disabled-/
12. Q: How do I turn on the fan on the TX2?
A:Option ①:
sudo ~/jetson_clocks.sh
Option ②:
sudo echo 255 > /sys/kernel/debug/tegra_fan/target_pwm
For details, see:
https://devtalk.nvidia.com/default/topic/1019914/how-to-turn-my-tx2-fan-on-and-how-to-install-ruby-and-python-/?offset=7
13. Q: The TX2 Wi-Fi module cannot connect to the router.
A:An external Wi-Fi antenna must be connected to the TX2 module. Without an antenna, the signal strength is insufficient.
14. Q: What is the GPIO high-level voltage and drive current on the RTSO series carrier board?
A:GPIO high-level voltage: 3.3 VDrive current: 12 µA
15. Q: How do I control the four GPIOs on the carrier board?
A:a. Export GPIOs
echo "388" | sudo tee /sys/class/gpio/export // GPIO-0
echo "298" | sudo tee /sys/class/gpio/export // GPIO-1
echo "480" | sudo tee /sys/class/gpio/export // GPIO-2
echo "486" | sudo tee /sys/class/gpio/export // GPIO-3
b. Set GPIO direction
echo "out" | sudo tee /sys/class/gpio/gpioxxx/direction // Output
echo "in" | sudo tee /sys/class/gpio/gpioxxx/direction // Input
c. Set GPIO output level
echo "1" | sudo tee /sys/class/gpio/gpioxxx/value // High
echo "0" | sudo tee /sys/class/gpio/gpioxxx/value // Low
16. Q: NVIDIA forum URL (for more questions and discussions)
A:https://devtalk.nvidia.com/default/board/139/jetson-embedded-systems/
17. Q: How can I display camera data in real time?
A:① Install qv4l2:
sudo apt-get install qv4l2
② Run:
ls /dev
Check the device name (e.g., video0)
③ Run qv4l2, configure playback parameters, and click the Play button.
18. Q: The apt-get install command does not work.
A:Update the software sources:
Go to System Settings → Software & Updates → Ubuntu Software, and enable all available options.
19. Q: Which tool should be used for the debug serial port?
A:sudo apt-get install cutecom
20. Q: JetPack installation fails.
A:Before installing JetPack, update the software sources by enabling all options in System Settings → Software & Updates → Ubuntu Software, then update the system.
After that, run:
sudo apt-get update
Then follow the “RTSO Series Product System Flashing Guide.”
21. Q: How do I test the RS-485 interface on the RTSO-9001?
A:Install gtkterm:
sudo apt-get install gtkterm
Use the menu Control Signals → Toggle RTS to send and receive data.
RTS ON: gtkterm can receive data from the external device
RTS OFF: gtkterm can transmit data to the external device
22. Q: How do I check the TX2 system version?
A:Run:
head -n 1 /etc/nv_tegra_release
23. Q: How do I check system flashing parameters?
A:Edit the file:
sudo vi /etc/realtimes/rts-l4t.version
The flashing parameters will be displayed.
24. Q: After connecting the Ethernet cable, the system cannot access the network and the IP address is not from the router.
A:Click the network settings icon in the upper-right corner, disconnect the network, and reconnect.
25. Q: Error during environment setup:tar:(Child): lbzip2: Cannot exec: No such file or directory
A:Install lbzip2.
26. Q: Power-on auto-start for Xavier Development Kit
A:Refer to the Jetson Xavier Development Kit User Guide, Section 3.5 Automation Header for configuration instructions.
27. Q: TX2 used with RTSO-9001/9002 cannot use Raspberry Pi camera.
A:First, check /etc/realtimes/rts-l4t.version to see whether the imx219 parameter is included.
For r28.x systems: install the BSP driver package with CSI-2 lanes mode
For r32.x systems: the BSP already includes the Raspberry Pi camera driver; simply flash the system with the imx219 parameter
Camera verification can be performed according to “Leopard MIPI Camera User Guide.”
28. Q: How do I check whether a video capture card is detected?
A:Use the lspci command.
29. Q: How do I check whether a Huawei 4G module is detected?
A:Use the lsusb command. The output should show Huawei Technologies Co.
30. Q: Jetson Nano Development Kit fails to boot after flashing r32.3.1 with a 32GB TF card.
A:The r32.1 system can boot normally with a 32GB TF card.
For r32.3.1, a 64GB TF card is required.
31. Q: What are the dimensions of the official TX2 development board?
A:170 mm × 170 mm
32. Q: How much memory does the official TX2 development board have?
A:Only the 8 GB version is currently available.
33. Q: Can the official TX2 development board be configured for power-on auto-start?
A:No. It is recommended to use our self-developed RTSO-900X series carrier boards.
34. Q: Why is there only one USB 3.0 port after installing the RTSO-900X carrier board?
A:The corresponding BSP must be flashed when using the RTSO-900X carrier board.
Please refer to the “RTSO Series Product Flashing Guide.”
35. Q: What cameras are supported by the official TX2 development board?
A:The official development board includes an OV5693 camera.
Additional cameras can be connected via USB cameras or network cameras.
36. Q: A newly purchased TX2 development kit does not power on.
A:For the official development board, press and hold the power button for 3 seconds to power on.
37. Q: A purchased Nano development board does not power on.
A:When using the bundled 5V/4A power adapter, short the J48 pins
When powering via micro USB, J48 does not need to be shorted
(Note: USB power supply must provide 5V/2A)
38. Q: How do I flash the system and install OpenCV, CUDA, and other software?
A:Please refer to the “RTSO Series Product Flashing Guide.”
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