Thermal Zone 6

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi. I have a Jetson TX2, which is part of a long running system. Unfortunately, we encounter problems after running for some time. While investigating, if heat could be the source of the problem, I noticed

root@tegra-ubuntu:/var/log# cat /sys/devices/virtual/thermal/thermal_zone6/temp 
100000

Is this normal? Or is there some underlying issue?

Thanks,
Helge

2

Please dump this

cat /sys/devices/virtual/thermal/thermal_zone6/type
3

Hi, it is expected.

4

The way it’s been explained to me is that the PMIC doesn’t have a thermometer, only certain “trip points.” The lowest “trip point” is above 100 degrees, so when no point is tripped, all the system knows is “it’s 100 centigrade or lower,” so that’s what it displays.
It makes sense, I guess, but it’s somewhat confusing :-)

5

Thanks snarky. That is correct.