jetson-print-device-info

jetson-device-skills

Purpose

When to use

• Starting a performance run and you want a captured baseline of the device's software stack and power mode.
• Verifying that a freshly flashed Jetson matches an expected L4T / JetPack version.

Prerequisites

• Running on a Jetson target (not the host PC).
• Standard CLIs available:

  tr

  ,

  cat

  ,

  uname

  ,

  uptime

  ,

  lsb_release

  (or

  /etc/os-release

  ).

• nvpmodel

  available for power mode (optional — skill falls back gracefully).

Inputs

Instructions

1. Capture the module model and validate it is a Jetson target — exit early otherwise:
   bash

   # Device-tree strings are null-terminated, so strip NULs before printing.
   model=$(tr -d '\0' < /proc/device-tree/model 2>/dev/null)
   case "$model" in
     *Jetson*) ;;
     *) echo "Not running on a Jetson target (model: '${model:-unknown}')"; exit 1 ;;
   esac
   echo "$model"

2. Extract the L4T release header line — skip the rest of the file (long list of library SHAs):
   bash

   head -1 /etc/nv_tegra_release 2>/dev/null || echo "L4T release info not found"
   # Equivalent: grep -m1 '^# R' /etc/nv_tegra_release

3. Run

   nvpmodel -q

   and join its two output lines (

   NV Power Mode: <name>

   and the mode number) onto one line.

   paste -sd

   only uses the first char of its delimiter, so use

   awk

   to insert the literal

   /

   separator:
   bash

   nvpmodel -q 2>/dev/null | awk 'NR==1{a=$0; next} {print a" / "$0}' \
     || echo "nvpmodel not available"

4. Print the kernel version and uptime:
   bash

   uname -r
   uptime -p

5. Print the OS version (prefer

   lsb_release

   , fall back to

   /etc/os-release

   ):
   bash

   lsb_release -ds 2>/dev/null || (. /etc/os-release && echo "$PRETTY_NAME") || echo "OS version not found"

Output format

Model:           <device-tree model string>
L4T release:     <release header line>
Power mode:      <nvpmodel name> / <mode number>
Kernel:          <uname -r>
Uptime:          <uptime -p>
OS version:      <lsb_release / /etc/os-release output>

Examples

Model:           NVIDIA Jetson AGX Orin Developer Kit
L4T release:     # R36 (release), REVISION: 3.0
Power mode:      NV Power Mode: MAXN / 0
Kernel:          5.15.136-tegra
Uptime:          up 2 hours, 14 minutes
OS version:      Ubuntu 22.04.4 LTS

Model:           NVIDIA Jetson AGX Thor Developer Kit
L4T release:     # R39 (release), REVISION: 0.0
Power mode:      NV Power Mode: 120W / 1
Kernel:          6.8.0-tegra
Uptime:          up 12 minutes
OS version:      Ubuntu 24.04 LTS

Error handling

"... not found"

"... not available"

/proc/device-tree/model

Limitations

• Read-only inspection only — does not detect GPU/CPU clocks, thermal state, or per-rail power.

• nvpmodel

  output format varies between L4T versions; the skill prints it verbatim rather than parsing.

Troubleshooting

• Error:

  /proc/device-tree/model: No such file or directory

  Cause: Running on a host PC, not a Jetson target. Solution: Run the skill on the Jetson device directly (e.g. via SSH).
• Error:

  nvpmodel: command not found

  Cause: L4T BSP not installed, or running in a minimal container without

  nvpmodel

  . Solution: Expected on non-Jetson or stripped environments — the skill prints

  "nvpmodel not available"

  and continues.

Notes

• Read-only. Do not change power mode, install packages, or modify any files.
• If the skill is invoked on a host PC by mistake,

  /proc/device-tree/model

  will not contain a Jetson model string — detect that and exit with a clear message rather than printing misleading info.