Difference between revisions of "Raspberry Pi ALSA"
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(→More on the ALSA Sound Drivers and Utilities) |
(→More on the ALSA Sound Drivers and Utilities) |
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The amixer command can provide useful information (sometimes): | The amixer command can provide useful information (sometimes): | ||
| − | + | You can look at the mixer settings by typing amixer without any arguments. This command lists the mixer settings of the various parts of the soundcard. The output from amixer can greatly differ from card to card. Unfortunately you can’t find much documentation on how to interpret the out. | |
| − | + | The RPi doesn’t have a “Master” control only “PCM”. So commands like amixer set Master... will not work. You must use amixer set PCM ... | |
| − | + | You can mute /unmute the sound via these commands: amixer set PCM mute and amixer set PCM unmute | |
| − | + | As of August 2012, there appears to be a [http://raspberrypi.stackexchange.com/questions/1268/alsa-volume-ignored-when-beginning-playback known bug] in RPi ALSA driver that ignores volume settings at the start of playback and always plays at max volume. Therefore, commands like | |
<pre> | <pre> | ||
