I have a number of machines using CentOS 6.8
They have M-Audio sound cards. When I set the output levels using alsamixer and save using ‘alsactrl store’ [creating a requested directory] the settings do not restore on reboot. I have no idea why they don’t. running ‘alsactrl restore’ works so the settings are being saved.

I think the on board card settings are loaded OK

/var/lib/alsa/asound.state

seems to have the right permissions, and I can find no errors in any logs.

My fix is to run a script from /etc/rc.local which runs on restart and sends me an email

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