for now best thing i can acheive is: pulse in config : enable-lfe-remixing=no (or just comment it) set profile 2.1
and then use mplayer to play music and upmix it there to 5.1 and lowpass it there as described here: http://www.mplayerhq.hu/DOCS/HTML/en/advaudio-channels.html -af pan=6:1:0:0:0:0:0.5:0:1:0:0:0:0.5:0.0.0.0.0.0:0.0.0.0.0.0:0.0.0.0.0.0:0.0.0.0.0.0,sub=80:5 this will make left = left , right = right and lfe=0.5(left) and 0.5(right) and lowpass it (you can make that 80 go lower to 60 or to any of your likings). playing this make pulse do this: Channel matrix: ( 1.982| 0.000) D: [pulseaudio] resampler.c: I00 I01 I02 I03 I04 I05 ( 1.982| 0.000) D: [pulseaudio] resampler.c: +------------------------------------ ( 1.982| 0.000) D: [pulseaudio] resampler.c: O00 | 0,621 0,000 0,069 0,000 0,310 0,000 ( 1.982| 0.000) D: [pulseaudio] resampler.c: O01 | 0,000 0,621 0,000 0,069 0,310 0,000 ( 1.982| 0.000) D: [pulseaudio] resampler.c: O02 | 0,000 0,000 0,000 0,000 0,000 1,000 ( 1.982| 0.000) D: [pulseaudio] resampler.c: O03 | 0,000 0,000 0,000 0,000 0,000 1,000 ( 1.982| 0.000) I: [pulseaudio] remap.c: Using generic matrix remapping ( 1.982| 0.000) I: [pulseaudio] resampler.c: Using resampler 'copy' ( 1.982| 0.000) I: [pulseaudio] resampler.c: Using s16le as working format. ( 1.982| 0.000) D: [pulseaudio] resampler.c: Resampler: ( 1.982| 0.000) D: [pulseaudio] resampler.c: rate 44100 -> 44100 (method copy), ( 1.982| 0.000) D: [pulseaudio] resampler.c: format float32le -> s16le (intermediate s16le), ( 1.982| 0.000) D: [pulseaudio] resampler.c: channels 6 -> 4 (resampling 4) ( 1.982| 0.000) I: [pulseaudio] sink-input.c: Created input 0 "audio stream" on alsa_output.pci-0000_00_1b.0.analog-surround-21 with sample spec float32le 6ch 44100Hz and channel map front-left,front-right,rear-left,rear-right,front-center,lfe so left and right will be ~60% of their orig volume - as it mixes it with silence... so just make left/right volume in pulse a little bit louder than woofer and voila it should sound like this from any player through pulse alone (system-wide) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1040873 Title: [N56VZ, Realtek ALC663, Black Headphone Out, Right] No sound at all: Subwoofer not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1040873/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
