TX2 Serial Number

When I was running R28.1 I was looking in /proc/cmdline to find the device serial number but after upgrading to R32 I no longer see the serial number. Where else could I find the serial number or even better is there a way to get it back into the cmdline?

hello alex.barchet,

you’re able to check the sysnode for serial numbers.
for example,

$ cat /proc/device-tree/serial-number

you might also check Topic 1027966 for reference,

Hi Jerry - thanks for the answer, I guess my question was maybe poorly worded. I see that you can get it now from /proc/device-tree/serial-number and I see that it is available in that same location if I go back to older versions, however why when all notes pointed to grabbing it from /proc/cmdline is it not there anymore, and is there a chance that this /proc/device-tree/serial-number is gone the next time I upgrade.

hello alex.barchet,

we did have modification to move serial number, the sysnode /proc/cmdline is now saving boot arguments.
you may check sysnode /proc/device-tree/serial-number for serial numbers.
please checking Jetson Module EEPROM Layout for board information. you may dump the values with i2cdump binary.
for example,

$ sudo i2cdump -f -y 0 0x50