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No TTY connected to a Jetson TX2

+1 vote

Hi, i am able to use the USB TTY over my Mac, but when connected to a Jetson TX2 board, the camera works great but there is no USB TTY appearing in dmesg. 

[   14.665740] input: JeVois-A33 Smart Camera as /devices/3530000.xhci/usb1/1-2/1-2.2/1-2.2:1.0/input/input6
[   14.665847] usbcore: registered new interface driver uvcvideo
[   14.665848] USB Video Class driver (1.1.1)

Any ideas how to investigate?

asked Mar 20, 2017 in Hardware Questions by bwhitman (170 points)

1 Answer

+1 vote
Best answer

on our Linux hosts here, lsmod reveals that we have a cdc_acm module loaded. Maybe it does not get loaded on your Jetson. You may need to install some extra packages for modem support, or maybe just try

modprobe cdc_acm

cdc_acm is the module that would handle the serial-over-USB communications on your host.

answered Mar 21, 2017 by JeVois (17,550 points)
selected Mar 22, 2017 by bwhitman
Ah, I see.

modprobe: FATAL: Module cdc_acm not found in directory /lib/modules/4.4.15-tegra

For now I've got it working over the UART pins just fine on the external connector, and will look at getting that module in there. Thanks