[alsa-devel] [PATCH] alsa-lib - emu10k1.conf - Fix no sound problem when using SB Live! Platinum

Raymond Yau superquad.vortex2 at gmail.com
Mon May 16 04:40:22 CEST 2011

This patch allow pulseaudio to use "front" device for playback and capture ,
also allow user to use "rear" device of SB Live! for playback by adding type
asym to front, rear and center_lfe

After commit 16f716eadd61be80b28839396105c020e401294c which remove the lock

If application using "hw", "front" , "rear" , "surround40" and "surround51"
for playback ,  right channel or both left and right channels suddenly lost
sound beause the route of the first stereo channel is changed when other
application using "front", "rear" or "center_lfe" to record

After applying this patch,  "rear" , "center_lfe", "surround40" and
"surround51" can no longer be used to record

arecord -v -Drear:CARD=Live -f cd /dev/null
ALSA lib pcm_asym.c:106:(_snd_pcm_asym_open) capture slave is not defined
arecord: main:660: audio open error: Invalid argument
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