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howtos:hardware:sound_problems_on_slackware [2018/02/15 14:33 (UTC)] – [Sound Problems on Slackware] lysanderhowtos:hardware:sound_problems_on_slackware [2018/02/15 15:15 (UTC)] – Show how syntax elements can be used to beautify the page and make maintenance easier. alienbob
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 <!-- Add your text below. We strongly advise to start with a Headline (see button bar above). --> <!-- Add your text below. We strongly advise to start with a Headline (see button bar above). -->
 <!-- Reviewed 2012-12-24 hazel --> <!-- Reviewed 2012-12-24 hazel -->
 +<!-- Reviewed 2018-02-15 alienbob -->
  
 **NOTE: on my systems, my default card is 1 and default device is 0 so I will use 1,0 through out this page** **NOTE: on my systems, my default card is 1 and default device is 0 so I will use 1,0 through out this page**
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 **Investigate the problem** **Investigate the problem**
  
-1) See which kernel modules are loaded: +  - See which kernel modules are loaded: <code> 
- + lsmod | grep snd 
-     lsmod | grep snd +</code> Use this information along with your motherboard sound chipset to verify that the correct sound drivers are loading. 
- +  See which sound devices are detected by alsa:<code> 
-Use this information along with your motherboard sound chipset to verify that the correct sound drivers are loading. +aplay -l 
- +</code> Most likely, alsa is loading the correct modules but setting the wrong sound device as default. 
- +  Test sound devices to see which one(s) work:<code> 
-2) See which sound devices are detected by alsa: +alsamixer 0 
- +<F6> 
-     aplay -l +<select a card(s)> 
- +<adjust volumes and make sure they aren't muted> 
-Most likely, alsa is loading the correct modules but setting the wrong sound device as default. +<ESC>
- +
-3) Test sound devices to see which one(s) work: +
- +
-     alsamixer 0 +
-     <F6> +
-     <select a card(s)> +
-     <adjust volumes and make sure they aren't muted> +
-     <ESC>+
            
-     aplay -D plughw:0,0 test.wav   (WHERE 0,0 is card/slot 0, device 0 and test.wav is a sound file e.g. /usr/share/sounds/alsa/Noise.wav) +aplay -D plughw:0,0 test.wav   (WHERE 0,0 is card/slot 0, device 0 and test.wav is a sound file e.g. /usr/share/sounds/alsa/Noise.wav) 
-     aplay -D plughw:0,1 test.wav +aplay -D plughw:0,1 test.wav 
-     aplay -D plughw:1,0 test.wav +aplay -D plughw:1,0 test.wav 
-     aplay -D plughw:1,1 test.wav +aplay -D plughw:1,1 test.wav 
 +</code>
  
 ---- ----
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 **PROBLEM:** No equalizer. **PROBLEM:** No equalizer.
  
-**FIX:** Enable the equalizer (N.B. the alsaequal plugin may have to be obtained separately).+**FIX:** Enable the equalizer \\ <note>the ''alsaequal'' plugin is not part of Slackware. You can build it from source using [[https://slackbuilds.org/result/?search=alsaequal&sv=|slackbuilds.org]]</note>
  
 Output can either be from the audio device or the mixer. For the device use the following: Output can either be from the audio device or the mixer. For the device use the following:
 howtos:hardware:sound_problems_on_slackware ()