/usr/share/doc/aumix-gtk/README.Debian is in aumix-gtk 2.9.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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1. Enabling auto save and restore
The package contains an init.d script that can save the mixer settings upon
shutdown, and restore them (as soon as possible) upon booting. If you
want to use this, put
SAVEMIXER=yes
in /etc/default/aumix.
In earlier versions, the auto-save option was enabled by default.
However, this clashes with oter packages (e.g. setmixer) that also save, mute
and restore. Therefore, this feature has been disabled by default from
version 2.8-4 on.
In previous versions, the presence of the file /etc/default/aumix.stop
was used to determine that you don't want the mixer settings to be
saved/restored. This is still supported, but will trigger a warning
message.
2. Suppressing modprobe error messages
Note that you may see error messages like this: "modprobe: modprobe:
Can't locate module sound-slot-1" on the console at start up, or in
/var/log/syslog. This is caused by /etc/init.d/aumix trying to load
mixer settings for all /dev/mixer* devices. Unless your system is using
devfs, you will probably have more /dev/mixer* device nodes than
physical mixer devices in your system.
Suppressing modprobe error messages for nonexistent mixer devices is
simply a matter of creating dummy aliases for those modules. On Debian
systems, these aliases go in files under the /etc/modutils directory.
If you already have a file containing sound or other module definitions
for your system, add them there. Otherwise, create a file called
/etc/modutils/sound-dummy and add them there.
For example, if the error message complains about sound-slot-1 and
sound-service-1-0, you would add the following to the file:
alias sound-slot-1 off
alias sound-service-1-0 off
Replace the module names above with the names reported on your system.
After saving the file, run "update-modules" once. (All of this must be
done as root.)
As mentioned above, systems using the devfs filesystem don't have this
problem, since devfs dynamically creates device nodes in the filesystem
for devices actually present. For more information about this, see
Documentation/filesystems/devfs/README in your Linux kernel source or
kernel-doc-2.4.18 package.
3. Notes for ALSA users
If you also have the Debian ALSA packages installed, the aumix init.d
script will detect this and refuse to touch the mixer, as this is
handled by the alsactl program and the /etc/init.d/alsa script instead.
If you don't wish to use the ALSA stuff, e.g. since you only access ALSA
in OSS emulation mode, you can forbid aumix execution at boot/shutdown
by editing /etc/defaults/aumix. See the first note in this file for more
information.
The old aumix-alsa package has been removed as there is no support for
it anymore upstream. The aumix package works fine (although with
limited channels) with the OSS compatibility layer for ALSA. To enable
the compatibility layer, modprobe the snd_mixer_oss module (and/or put
it in /etc/modules).
Hopefully aumix will have full ALSA support in the future (it is on
upstream's TODO list). If you're knowledgeable with ALSA stuff, feel
free to contact aumix@packages.debian.org to help out. The Debian
maintainer works closely with the aumix upstream maintainer.
4. /etc/init.d/alsa-gtk
Starting with version 2.7-24, aumix and aumix-gtk use the same
init.d file /etc/init.d/aumix. Earlier version of aumix-gtk used
/etc/init.d/aumix-gtk instead. On upgrade, the old
/etc/init.d/aumix-gtk file was renamed to /etc/init.d/aumix. The
old /etc/init.d/aumix file, if it existed, was saved as
/etc/init.d/aumix.dpkg-old.
Bas Zoetekouw <bas@debian.org>
Eduard Bloch <blade@debian.org>
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