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raspberry pi上のwifiで省電力機能を切る

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wifiドングルにはI-O DATAのWN-G150UMWを使用しています。

まず現在のパワーマネジメントの状態を確認します。

$ cat /sys/module/8192cu/parameters/rtw_power_mgnt
1

/etc/modprobe.d/8192cu.conf というファイルを作成して以下の内容を入れます。

# Disable power saving
options 8192cu rtw_power_mgnt=0

リブートして再度パワーマネジメントの状態を確認します。

$ cat /sys/module/8192cu/parameters/rtw_power_mgnt
0

参考:adafruitの記事Raspberry Piで無線LANの反応が悪い時の対処法

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