Dead usb 3.0?

Hi,

The full size USB port on my tegra tk1 does not seem to be working. I see that it powers on initially but after a few minutes it dies. The devices I connect to it are all working well. Is there anyway to debug if it is a hardware problem? Do you think I burnt my USB port?

lsusb return unable to initialize libusb: -99

Thanks,
Benzun

There a strong possibility without hardware failure. What comes to mind is that there are times when low power sleep mode interferes (auto-suspend) by “temporarily” disabling USB. Sometimes once sleep or low power is entered, a USB device may not come back properly from wakeup. This is a link to being sure lower power is not entered:
http://elinux.org/Jetson/Performance

Search for “usb auto-suspend” in the above link.