Blame SOURCES/modprobe-dist-alsa.conf

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# ALSA Sound Support
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#
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# We want to ensure that snd-seq is always loaded for those who want to use
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# the sequencer interface, but we can't do this automatically through udev
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# at the moment...so we have this rule (just for the moment).
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#
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# Remove the following line if you don't want the sequencer.
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install snd-pcm /sbin/modprobe --ignore-install snd-pcm && /sbin/modprobe snd-seq