Difference between revisions of "Template:Basiccheck"
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| + | '''Requirements'''<br> | ||
| + | At best, all audio outputs should work.<br> | ||
| + | * Note if speakers do not work, or are not present.<br> | ||
| + | * Note if the headphone jack does not work.<br> | ||
| + | * If neither the internal speakers nor the headphone jack work, check with your instructor.<br> | ||
| + | |||
'''Test Internal Speakers and 1/8" Audio Jack'''<br> | '''Test Internal Speakers and 1/8" Audio Jack'''<br> | ||
☐ Open a Terminal and type <code>speaker-test -t wav -c2 -l1</code> | ☐ Open a Terminal and type <code>speaker-test -t wav -c2 -l1</code> | ||
*You should hear an audio file play from both the right and left speakers. | *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. <br> | ☐ Find the headphone jack; it is usually colored green or marked with a headphone symbol. <br> | ||
| − | ☐ Find a pair of headphones | + | ☐ Find a pair of headphones from the shelf.<br> |
☐ Repeat the audio test or use an audio CD to test the jack output; mark your findings on the Keeper label. <br> | ☐ Repeat the audio test or use an audio CD to test the jack output; mark your findings on the Keeper label. <br> | ||
| − | + | ||
| + | <blockquote> | ||
| + | '''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. | ||
| + | </blockquote> | ||
| + | |||
| + | <blockquote> | ||
'''Troubleshooting Audio'''<br> | '''Troubleshooting Audio'''<br> | ||
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: | 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: | ||
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*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. | *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 <code>alsamixer</code> in a terminal and check that volume levels for "Master" and "PCM" are set around 90. | *run <code>alsamixer</code> in a terminal and check that volume levels for "Master" and "PCM" are set around 90. | ||
| − | + | </blockquote> | |
| − | |||
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[[Category:Laptops]] | [[Category:Laptops]] | ||
Revision as of 18:24, 13 September 2013
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
alsamixerin a terminal and check that volume levels for "Master" and "PCM" are set around 90.