Problem: USB ports become unresponsive over time. My guess is that there is something wrong with devices being connected. Somehow this evening, I’ve been noticing a lot more system crashes where the GUI freezes and the keyboard/mouse are no longer responsive. I am still able to SSH into the machi…

There are some hypothesis we can think of, in order of possibility: KVM/hub churn is deadlocking something in xHCI/USB stack Some power / signal integrity issues on the hub chain Kernel regression introduced by recent updates Specific port group / controller path is affected I myself noticed some…

Hi Raphael, Thanks for looking into it. Yeah, that’s my thought too. IT seems like power would not be the issue since there is still a 5V signal when the USB goes down. It just doesn’t trigger the detect. Since the port near the power side always seems to be OK, it also suggest that it’s that X…

Yeah, it does look like a problematic scenario

I just ordered another KVM with proper USB persistence. Probably won’t have time to test it until after Christmas, but will update this post when I do.

[image] raphael.amorim: Specific port group / controller path is affected HI, can you please share a nvidia bug report log with us to triage? *** If you have a problem PLEASE read this first ***

Possible USB issue (latest system updates vs. KVM issue)

Accelerated Computing DGX Spark / GB10 User Forum DGX Spark / GB10

NVES December 16, 2025, 6:15pm 6

HI, can you please share a nvidia bug report log with us to triage? *** If you have a problem PLEASE read this first ***

Topic		Replies	Views
USB Issues with L4T 24.1 Jetson TX1	19	3963	July 25, 2016
All USB connections fall back to 480 Mbps USB 2.0 DGX Spark / GB10 usb , firmware-tools	14	359	March 10, 2026
NVIDIA DGX Spark continuously freezing, hanging, and or rebooting DGX Spark / GB10 boot , kernel , ubuntu , usb	7	446	April 8, 2026
USB C port "crashing" Jetson AGX Xavier usb	14	1622	July 27, 2020
Some observation about DGX Spark usb ports DGX Spark / GB10	8	459	February 4, 2026
tegra-xusb-mbox: Controller firmware hang Jetson TX2	7	3485	October 17, 2019
USB Ports gets locked DRIVE AGX Xavier General	6	978	July 25, 2019
Xavier USB can not use Jetson AGX Xavier hw , usb	18	1906	July 29, 2021
R3273 Jetson Xavier NX USB port not use Jetson Xavier NX usb	2	415	October 19, 2023
Camera program breakdown! Jetson TX1	22	2803	March 1, 2017

Possible USB issue (latest system updates vs. KVM issue)

Related topics