Template:Basiccheck

Requirements
At best, all audio outputs should work.

• Note if speakers do not work, or are not present.
  
• Note if the headphone jack does not work.
  
• If neither the internal speakers nor the headphone jack work, check with your instructor.
  

Test Internal Speakers and 1/8" Audio Jack
☐ Open a Terminal and type speaker-test -t wav -c2 -l1

• You should hear an audio file play from both the right and left speakers.

☐ Find the headphone jack; it is usually colored green or marked with a headphone symbol.
☐ Find a pair of headphones from the shelf.
☐ Repeat the audio test or use an audio CD to test the jack output; mark your findings on the Keeper label.

Tip
Use the same Terminal window and hit the up arrow to bring up a previously typed command, and then hit enter to repeat the command.

Troubleshooting Audio
In laptops, we cannot physically replace the sound card, like we can in a desktop system. This limits our options when things go wrong. However, we can:

• ensure that the sound card is recognized by the system by running lspci | grep -i audio.
• double check that audio is not muted in the operating system. Click on the audio symbol in the top panel of the Desktop to check the volume settings.
• run alsamixer in a terminal and check that volume levels for "Master" and "PCM" are set around 90.