Can I login Xavier NX system use the debug UART(UART2 on the DEVKIT)

[bi4wms]

Hi,
Can I login Xavier NX system use the debug UART? I have tried, but failed, the terminal always display login. Thanks

[JerryChang]

hello bi4wms,

there’re 3 UARTs available Jetson Xavier NX,
UART0 to M2
UART1 to 40PIN
UART2 to debug

please also refer to Topic 145106 for changing serial console to other uart.
thanks

[bi4wms]

Hi，
My question is can I use the debug uart or other uart to login the NX ubuntu system, like using ssh login?

[JerryChang]

hello bi4wms,

may I know what’s the results by updating the UART instance?
for example, $Linux_for_Tegra/bootloader/t186ref/BCT/tegra194-mb1-bct-misc-l4t.cfg

enable_combined_uart = 1;
spe_uart_instance = 0x2;

[bi4wms]

I just use the dev-kit and default firmware, you mean the default firmware doesn’t support debug uart login, I must change something myself? I will have a try, thanks