I've just installed Slackware 14.0 (x86_64). I installed all series, except for the series for international languages which the installer always unselects by default.
Now, when booting I get
amixer: Mixer default load error: Invalid argument
Storing default alsamixer settings: /usr/sbin/alsactl store
/usr/bin/alsactl: get_control:250: Cannot read control info '2,0,0,Front Playback Volume,0': Invalid argument
And when invoking alsamixer I get
Cannot load mixer controls: Invalid argument
What can possibly be the cause? I tried to run alsaconf, but after doing 'updatedb', locate could not find it.
(a) Nor is alsaconf in the installation CD /extra / directory.
(b) Unfortunately /usr/doc/Linux-HOWTOs/Sound-HOWTO is obsolete (dated July 2001, it is still speaking of kernel 2.5 development).
(c) lspci gives
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)