Hi
I’m using a custom baseboard, I found that when connecting the debug USB port with a USB cable and pinging 192.168.55.1 from a laptop, the connection is unstable and intermittent. However, when pinging 192.168.55.1 from a desktop PC, there are no issues. Can adjusting the USB drive strength solve this problem? How do I modify the USB drive strength?
Thanks
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Adjusting the USB drive strength may help solve the problem of unstable and intermittent connection when pinging 192.168.55.1 from a laptop. The USB drive strength refers to the signal strength of the USB signals transmitted by the Jetson AGX Orin module.
To modify the USB drive strength, you can try the following:
drive-strength property in the device tree. This property controls the strength of the USB signals transmitted by the Jetson AGX Orin module.To modify the drive-strength property, you will need to update the device tree source file (.dtsi file) and recompile the device tree binary (.dtb file). The exact steps to modify the device tree may vary depending on your development environment and the version of the Linux kernel you are using.
Here is an example of how to modify the drive-strength property in the device tree:
&xhci {
drive-strength = <16>; /* adjust the drive strength to 16mA */
};
In this example, the drive-strength property is set to 16mA, which is a higher drive strength than the default value. You can adjust this value to a lower or higher value depending on your specific requirements.
After modifying the device tree, you will need to recompile the device tree binary and update the dtb file on your Jetson AGX Orin module.
Comparing the Jetson AGX Orin with other Jetson modules, such as the Jetson Xavier NX or Jetson Nano, the USB drive strength may vary depending on the specific module and its configuration. However, the general steps to modify the USB drive strength are similar across different Jetson modules.
In summary, adjusting the USB drive strength may help solve the problem of unstable and intermittent connection when pinging 192.168.55.1 from a laptop. You can modify the USB drive strength by adjusting the drive-strength property in the device tree and recompiling the device tree binary.
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Are those two host PC with different kind of OS?
Sometimes USB has auto suspend that would make delay happened.
Hi WayneWWW,
They both are windows OS. One is a desktop, and the other is a laptop. The desktop does not have this issue. There is also no such issue on the laptop running Ubuntu.
May I ask if the speed refers to the speed of the enumerated virtual network card? How should it be configured?
Thanks
Windows shall provide you some tools to tell whether device is running in USB3 or USB2 speed.
Hi WayneWWW，
When using the same USB 2.0 cable, there is no packet loss on the desktop, but packet loss occurs on the laptop. Could this issue be related to USB drive capability or signal quality? Are there any software updates available to enhance USB drive capability?
Thanks
Are you talking about “USB driver” or “USB drive”…? These two indicate different things..
am talking about the virtual network card enumerated by USB with the IP address 192.168.55.1. Occasionally, ping times out, and SSH disconnects. Is this related to the USB driver capability or something else? How can I fix it.
I think this is just a host PC side usb setting but not on Jetson… As I told before, sometimes there are USB auto suspend happened on your host PC that you could try to disable it first.
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