我聽不見電腦所發出的任何聲音

若您嘗試播放音樂卻聽不見任何聲音，試著採取下方所列舉的故障排除方案。

確保音量未設為靜音

開啟「系統選單」並確認音量沒被設為靜音或關閉。

某些筆記型電腦的鍵盤上有靜音開關或按鍵 — 試著按下按鍵，看看是否為該按鍵使聲音設為靜音。

You should also check that you have not muted the application that you are using to play sound (for example, your music player or movie player). The application may have a mute or volume button in its main window, so check that.

您也能在「聲音」面板中檢查音量滑桿：

  1. 開啟「概覽」並輸入「聲音」。

  2. 點一下「聲音」以開啟該面板。

  3. 在「個別音量」區域，檢查個別應用程式未被設為靜音。位於音量滑桿右側的按鈕能切換要將「靜音」開啟或是關閉。

檢查喇叭是否開啟並確實接上

If your computer has external speakers, make sure that they are turned on and that the volume is turned up. Make sure that the speaker cable is securely plugged into the “output” audio socket on your computer. This socket is usually light green in color.

Some sound cards can switch between the socket they use for output (to the speakers) and the socket for input (from a microphone, for instance). The output socket may be different when running Linux, Windows or Mac OS. Try connecting the speaker cable to a different audio socket on your computer.

A final thing to check is that the audio cable is securely plugged into the back of the speakers. Some speakers have more than one input, too.

檢查是否選擇了正確的聲音播放裝置

Some computers have multiple “sound devices” installed. Some of these are capable of outputting sound and some are not, so you should check that you have the correct sound device selected. This might involve some trial-and-error to choose the right one.

  1. 開啟「概覽」並輸入「聲音」。

  2. 點一下「聲音」以開啟該面板。

  3. Under Output, select an Output Device and click the Test button to see if it works.

    You might need to try each available device.

Check that the sound card was detected properly

Your sound card may not have been detected properly probably because the drivers for the card are not installed. You may need to install the drivers for the card manually. How you do this depends on the type of the card.

在《主控臺》中執行「lspci」命令以找尋您所擁有的音效卡：

  1. 前往「概覽」並啟動《主控臺》。

  2. 以管理權限執行「lspci」命令。您可以輸入「sudo lspci」後按Enter執行，並根據指示輸入您的密碼；或輸入「su」後按Enter執行，輸入 root（超級使用者）的密碼後，再輸入「lspci」並按Enter執行。

  3. Check if an audio controller or audio device is listed: in such case you should see the make and model number of the sound card. Also, lspci -v shows a list with more detailed information.

You may be able to find and install drivers for your card. It is best to ask on support forums (or otherwise) for your Linux distribution for instructions.

If you cannot get drivers for your sound card, you might prefer to buy a new sound card. You can get sound cards that can be installed inside the computer and external USB sound cards.