I've got such possibility on MS Windows XP with Realtek drivers (prove is at http://img694.imageshack.us/i/choosechannelmod.png/ ) so I should have possibility to do it also on Linux e.g. here http://img704.imageshack.us/i/screenshotsoundpreferen.png/ Patch given in attachment should do the thing. patch_realtek.c was downloaded from http://git.alsa-project.org/?p=alsa-kernel.git on Thu, 21 Jan 2010 13:58:25 +0000
From: Łukasz Wojniłowicz <lukasz.wojnilowicz@xxxxxxxxx> Subject: ALSA: hda - add possibility to choose speakers configuration for 4930g Now one can choose speaker configuration in e.g. PulseAudio mixer Signed-off-by: Łukasz Wojniłowicz <lukasz.wojnilowicz@xxxxxxxxx> --- --- patch_realtekc.c 2010-01-24 13:59:54.682214000 +0100 +++ patch_realtek.c 2010-01-24 14:00:50.044202925 +0100 @@ -9580,6 +9580,7 @@ .num_channel_mode = ARRAY_SIZE(alc883_3ST_6ch_modes), .channel_mode = alc883_3ST_6ch_modes, .need_dac_fix = 1, + .const_channel_count = 6, .num_mux_defs = ARRAY_SIZE(alc888_2_capture_sources), .input_mux = alc888_2_capture_sources,
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