TX2i power monitoring reports 77W!

Robotics & Edge Computing Jetson Systems Jetson TX2
1

The bash script from the TX2i thermal design document referenced by [url]Module Power of TX2 vs TX2i - Jetson TX2 - NVIDIA Developer Forums reports:

RAIL,POWER_AVG
VDD_IN,77141
VDD_SYS_GPU,305
VDD_SYS_CPU,468
VDD_SYS_SOC,2313
VDD_SYS_DDR,2217

That matches the values reported by the sysfs entries
cat /sys/devices/3160000.i2c/i2c-0/0-0041/iio_device/in_voltage0_input
19088
cat /sys/devices/3160000.i2c/i2c-0/0-0041/iio_device/in_current0_input
4040
cat /sys/devices/3160000.i2c/i2c-0/0-0041/iio_device/in_power0_input
77115

The TX2i is obviously not actually consuming 77W!
Its temperature is only 44C

Version 28.2.1

2

tegrastats also reports unreasonable value
RAM 560/6839MB (lfb 1347x4MB) CPU [5%@345,off,off,0%@345,0%@345,0%@345] BCPU@43.5C MCPU@43.5C GPU@42C PLL@43.5C Tboard@40C Tdiode@41.5C PMIC@100C thermal@42.7C VDD_IN 59904/59904 VDD_CPU 307/307 VDD_GPU 307/307 VDD_SOC 1537/1537 VDD_WIFI 0/0 VDD_DDR 1341/1341

3

Hi richardsearle,

Could you try rel-28.3 or rel-32.1? Maybe this issue is already fixed in latest release.

4

Problem is resolved by rel-32.1