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GNU/Linux Desktop Survival Guide
by Graham Williams
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Audio


The Creative Labs SB Audigy LS (using the snd_ca0106 module) did not present a mixer that the gnome-volume-control could find until gstreamer0.8-plugins was installed. The alsamixer command found one okay. Also, with some applications the sound is choppy - like the music is slow with continuous clicks. Yet, a DVD and ogg worked just fine with Totem! Also xmms is okay with the OSS driver. Realplayer clicks. Seems to happen when sound is played direct through ALSA rather than via the OSS emulation! Also needs at least kernel 2.6.11.

Since there are two soundcards in the machine, the simplest approach to making the CA0106 the default is to add both soundcards to /etc/modprobe.d/sound:

alias snd-card-0 snd-ca0106
options snd-ca0106 index=0
alias snd-card-1 snd-intel8x0
options snd-intel8x0 index=1

As of 081112 there remains the ongoing issue of getting the right sound card loaded and set as the default. Currently the manual process after a reboot is to remove all snd modules and then modprobe snd_ca0160. On Belinos, to get xmms working, needed to use the also driver, not oss. So add snd_intel8x0 to /etc/modprobe.d/blacklist to see if that helps.

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