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Jetson Nano Mouseで「tegra-i2c 700c400.i2c: no acknowledge from address 0x3c」と出る

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環境

Jetson Nano 4GB
Jetbot 0.4.3

原因

jetbot_displayというDockerコンテナが動いているから

解決方法

jetbot_displayの自動起動を無効にすればいい。
無効化して再起動してエラーが出なかったら解決!

無効化

sudo docker update --restart=no jetbot_display

確認

$ sudo docker inspect -f "{{.Name}} {{.HostConfig.RestartPolicy.Name}}" $(sudo docker ps -aq)
/jetbot_jupyter always
/jetbot_display no        # noになってればOK

(有効化)

sudo docker update --restart=always jetbot_display

調べて違かった方法

https://github.com/NVIDIA-AI-IOT/jetcard/issues/27

sudo systemctl disable jetcard_display

jetcardのissueに載ってるjetcard_displayというサービスを無効にする手法。
そもそもjetcardではないためサービスが存在せずだめ。

https://github.com/NVIDIA-AI-IOT/jetbot/issues/343

jetbotのissueに載ってて期待が持てるがみんな困ってるだけでだめ。

https://forums.developer.nvidia.com/t/105-180331-tegra-i2c-7000c400-no-acknowledge-from-address-0x3c/183717

英語力が皆無なのでGoogle先生に頼ったが、バージョン違いとかなんかいろいろあってさらによくわかんなくなる。
結局はDockerが関係してそうなことは分かった。

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