1 | <sect2>
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2 | <title>Configuring <application><acronym>ALSA</acronym> Utilities</application></title>
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3 |
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4 | <sect3><title>Config files</title>
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5 |
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6 | <para><filename>/etc/asound.state</filename></para>
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7 |
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8 | </sect3>
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9 |
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10 | <sect3><title>Configuration Information</title>
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11 |
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12 | <para>Probably the easiest way to store mixer levels is to set and retrieve
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13 | them using a bootscript. It is possible to do this with a
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14 | <userinput>post-install</userinput> line in
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15 | <filename>/etc/modules.conf</filename> but this is left as an exercise for
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16 | those readers who wish to do this.</para>
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17 |
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18 | <para>The <application><acronym>ALSA</acronym> Driver</application> package
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19 | installs a script as <filename>/etc/rc.d/init.d/alsasound</filename>. While it
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20 | is possible to use this script, it contains a lot of extraneous detail which
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21 | isn't needed on an <acronym>LFS</acronym> system and so we create our own
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22 | script <filename>/etc/rc.d/init.d/alsa</filename>.</para>
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23 |
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24 | <para>To create the <application><acronym>ALSA</acronym></application> script, do the following:</para>
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25 |
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26 | <screen><userinput><command>cat > /etc/rc.d/init.d/alsa << "EOF"</command>
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27 | #!/bin/sh
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28 | # Begin $rc_base/init.d/alsa
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29 |
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30 | # Based on sysklogd script from LFS-3.1 and earlier.
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31 | # Rewritten by Gerard Beekmans - gerard@linuxfromscratch.org
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32 | # ALSA specific parts by Mark Hymers - markh@linuxfromscratch.org
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33 | # Stores mixer settings in the default location: /etc/asound.state
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34 |
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35 | source /etc/sysconfig/rc
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36 | source $rc_functions
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37 |
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38 | case "$1" in
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39 | start)
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40 | echo "Starting ALSA... Restoring volumes..."
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41 | loadproc /usr/sbin/alsactl restore
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42 | #echo " Loading MIDI font..."
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43 | #loadproc sfxload /path/to/soundfont
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44 | ;;
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45 |
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46 | stop)
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47 | echo "Stopping ALSA... Saving volumes......"
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48 | loadproc /usr/sbin/alsactl store
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49 | #echo " Removing MIDI font.........."
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50 | #loadproc sfxload -i
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51 | ;;
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52 |
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53 | restart)
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54 | $0 stop
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55 | /usr/bin/sleep 1
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56 | $0 start
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57 | ;;
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58 |
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59 | *)
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60 | echo "Usage: $0 {start|stop|restart}"
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61 | exit 1
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62 | ;;
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63 |
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64 | esac
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65 |
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66 | # End $rc_base/init.d/alsa
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67 | <command>EOF
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68 | chmod 755 /etc/rc.d/init.d/alsa</command></userinput></screen>
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69 |
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70 | <para>You can then create the appropriate symlinks:</para>
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71 | <screen><userinput><command>cd /etc/rc.d/init.d &&
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72 | ln -sf ../init.d/alsa ../rc0.d/K35alsa &&
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73 | ln -sf ../init.d/alsa ../rc1.d/K35alsa &&
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74 | ln -sf ../init.d/alsa ../rc2.d/S40alsa &&
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75 | ln -sf ../init.d/alsa ../rc3.d/S40alsa &&
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76 | ln -sf ../init.d/alsa ../rc4.d/S40alsa &&
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77 | ln -sf ../init.d/alsa ../rc5.d/S40alsa &&
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78 | ln -sf ../init.d/alsa ../rc6.d/K35alsa</command></userinput></screen>
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79 |
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80 | <para>Note that all channels of your soundcard are muted by default. You can
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81 | use the <command>alsamixer</command> program from
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82 | <application><acronym>ALSA</acronym> Utilities</application> (or any other
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83 | <acronym>OSS</acronym> mixer) to change this.</para>
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84 |
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85 | <para>Also, the first time the above script is run, it will complain that
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86 | there is no state in <filename>/etc/asound.state</filename>. You can
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87 | prevent this by running the following commands after installing
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88 | <application><acronym>ALSA</acronym> Utilities</application>:</para>
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89 | <screen><userinput><command>touch /etc/asound.state &&
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90 | alsactl store</command></userinput></screen>
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91 |
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92 | <para>A final note is that the lines loading <filename>sfxload</filename>
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93 | are commented out. They are there as an example of other things you may
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94 | wish to do in the startup script. <filename>sfxload</filename> is a
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95 | separate package of interest to SoundBlaster AWE and Live!
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96 | users. It is designed for loading "sound-fonts" (which are used for
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97 | <acronym>MIDI</acronym> output). You may wish to delete these lines and add
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98 | your own or, if you have the relevant soundcard, install <filename>sfxload
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99 | </filename> and uncomment them.</para>
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100 |
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101 | </sect3>
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102 |
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103 | </sect2>
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