ALSA lib ctl_equal.c:268:(_snd_ctl_equal_open) Problem with control file .alsaequal.bin, 3. cannot open mixer: Operation not permitted https://bugs.gentoo.org/show_bug.cgi?id=499298
/etc/make.profile/parent, for ex: /usr/portage/profiles/default/linux/amd64/13.0 /var/portage/layman/backbone/profiles/extreme