刚拿到的Jetson Nano开发板上，jtop指令无法运行，
~$ jtop I can't access jetson_stats.service. Please logout or reboot this board.
顺便查了一下nvcc和tensorrt，正常，
~$ nvcc -V nvcc: NVIDIA (R) Cuda compiler driver Copyright (c) 2005-2021 NVIDIA Corporation Built on Sun_Feb_28_22:34:44_PST_2021 Cuda compilation tools, release 10.2, V10.2.300 Build cuda_10.2_r440.TC440_70.29663091_0
~$ dpkg -l tensorrt Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-==============-============-============-================================= ii tensorrt 8.0.1.6-1+cu arm64 Meta package of TensorRT
一时半会也没个头绪，重启系统，无效；然后重启了一下jetson_stats.service，
sudo systemctl restart jetson_stats.service
输入密码，无效，然后就没有然后了；
硬着头皮，把jetson_stats重新安装了一下，根据官网：
https://pypi.org/project/jetson-stats/
Install
sudo -H pip install -U jetson-stats
🚀 That's it! 🚀
PS: Don't forget to reboot your board安装过程如下，
~$ sudo -H pip install -U jetson-stats [sudo] password for hiwonder: Requirement already satisfied: jetson-stats in /usr/local/lib/python3.6/dist-packages (3.1.1) Collecting jetson-stats Downloading jetson-stats-3.1.4.tar.gz (85 kB) |████████████████████████████████| 85 kB 246 kB/s Building wheels for collected packages: jetson-stats Building wheel for jetson-stats (setup.py) ... \
done Created wheel for jetson-stats: filename=jetson_stats-3.1.4-py3-none-any.whl size=113477 sha256=25dfb2c83ddec3d5096ff0b9f4ba97d54b6278089448cac73a10d58d0f307738 Stored in directory: /root/.cache/pip/wheels/91/de/fb/c3d02bc69291926b5337e3f611048bfd34520502724a68551d Successfully built jetson-stats Installing collected packages: jetson-stats Attempting uninstall: jetson-stats Found existing installation: jetson-stats 3.1.1 Uninstalling jetson-stats-3.1.1: Successfully uninstalled jetson-stats-3.1.1 Successfully installed jetson-stats-3.1.4 WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv WARNING: You are using pip version 21.2.4; however, version 21.3.1 is available. You should consider upgrading via the '/usr/bin/python3 -m pip install --upgrade pip' command.
然后再跑jtop指令，还是不行， ~$ jtop The jetson_stats.service is not active. Please run: sudo systemctl restart jetson_stats.service hiwonder@JetMax:~$ sudo systemctl restart jetson_stats.service hiwonder@JetMax:~$ jtop I can't access jetson_stats.service. Please logout or reboot this board.
不过官网说了必须重启系统，所以赶紧reboot一下。
重启之后，发现jtop可以正常运行了，如下，
到最后，也没弄明白为什么jetson-stats-3.1.1不能运行，而jetson-stats-3.1.４能正常运行。
本文结束。
