[alsa-devel] [RFC Patch] ALSA - EMU10K1 - Remove Center LFE Wave Center and Wave LFE control for SB Live! Platinum

SB Live! Platinum CT4760P is just a 4 channels sound card with STAC9721 and Philips UDA1334 DAC

Is it feasible to remove "Center" , "LFE", "Wave Cetner" and "Wave LFE" Playback Volume control ?

or add a bitmap to disable the creation of those controls

Anyone know whether this patch has any side effect for the user with Live Drive

AFAIK, speaker-test will fail

speaker-test -d -c 6 -t wav -Dsurround51:1

speaker-test 1.0.24.2

Playback device is surround51:1 Stream parameters are 48000Hz, S16_LE, 6 channels WAV file(s) ALSA lib setup.c:565:(add_elem) Cannot obtain info for CTL elem (MIXER,'Headphone Center Playback Switch',1,0,0): No such file or directory Playback open error: -2,No such file or directory