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

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

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.

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

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;

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

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