2017/06/17

スピーカーの下に禁止マークが出ていて,MAC から音が出ない。

ハードウェアのトラブルということで,PRAM のクリアを推奨するページが多い。


PRAM とはパラメーター RAM の略で,ハードウェアの情報を保存している特別なメモリ。スピーカー,マウス,モニタなどのトラブルのときに PRAM をクリア(リセット)すると,問題が解決することが多い。

PRAM をクリアしたい時は,Mac を起動して,すぐに command, option, P, R を押し続ける。ジャーンという起動音が 2 回鳴るはずである。


PRAMをクリアしても解決しない(音が出ない)場合


今回,本当に書きたかったのはこっち。

PRAM をクリアしても,まだ禁止マークが消えないときは,システム環境設定の Sound を見てみよう。私の場合は,Output が HDMI 接続しているモニターになっていた。これを Built-in に直したら 解決。

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