Hi all,

I have a following problem with my system. I can play stereo music well enough from my front speakers, but when I try to play 5.1 surround sound, I only get sound from all the other speakers!

I'm running Debian testing/unstable using 2.6.12 kernel (x86) with Soundblaster Live! 5.1 installed and have installed ALSA from Debian reposity. alsa-lib version seems to be 1.0.10. More system details can be found from the end of the email.

After configuring ALSA with alsaconf I'm able to play stereo music (using, say, XMMS) from my front speakers. I can control the volume from alsamixers Wave slider and I also get music from all the other speakers, if I want to, with Wave Center, Wave LFE and Wave surround sliders.

When I try to play surround sound, however, the front speakers stay silent. This happens both with DVD playback and with speaker-test. When running speaker-test, I see

[EMAIL PROTECTED]:~$ speaker-test -Dsurround51 -c6

speaker-test 0.0.8

Playback device is surround51
Stream parameters are 48000Hz, S16_LE, 6 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 16384
Period size range from 16 to 16384
Periods = 4
Buffer time size 2525
To choose buffer_size = 16384
To choose period_size = 4096
was set period_size = 4096
was set buffer_size = 16384
 0 - Front Left
 4 - Center
 1 - Front Right
 3 - Rear Right
 2 - Rear Left
 5 - LFE

but I don't hear channels 0 and 1. Others are fine. I have tried unmuting and setting all possible sliders to maximum in the alsamixer, but nothing has helped. Surround, center and LFE sound volumes can be controlled from respective sliders correctly.

I have tried to Google for the solution and search from the mail list archives, but nobody seems to have same problem. :-] I would be grateful if someone could help somehow.

Regards,
Esko Arajärvi


Below some more information which maybe could help pinning down the problem.

gnulf:/etc# cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.9rc2 (Thu Mar 24 10:33:39 2005 UTC).

gnulf:/etc# cat /proc/asound/cards
0 [S51            ]: EMU10K1 - SB Live 5.1
                SB Live 5.1 (rev.7, serial:0x80641102) at 0xc800, irq 10

gnulf:/etc# lspci -vv
0000:00:10.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 07)
        Subsystem: Creative Labs SBLive! 5.1 Model SB0100
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (500ns min, 5000ns max)
        Interrupt: pin A routed to IRQ 10
        Region 0: I/O ports at c800 [size=32]
        Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

gnulf:/etc# lsmod | grep snd
snd_emu10k1_synth       7424  0
snd_emux_synth         37344  1 snd_emu10k1_synth
snd_seq_virmidi         7616  1 snd_emux_synth
snd_seq_midi_emul       7328  1 snd_emux_synth
snd_seq_dummy           3588  0
snd_seq_oss            35008  0
snd_seq_midi            9184  0
snd_seq_midi_event      7552  3 snd_seq_virmidi,snd_seq_oss,snd_seq_midi
snd_seq 52432 9 snd_emux_synth,snd_seq_virmidi,snd_seq_midi_emul,snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_emu10k1           119620  1 snd_emu10k1_synth
snd_rawmidi            24896  3 snd_seq_virmidi,snd_seq_midi,snd_emu10k1
snd_seq_device 8684 8 snd_emu10k1_synth,snd_emux_synth,snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq,snd_emu10k1,snd_rawmidi
snd_ac97_codec         83960  1 snd_emu10k1
snd_pcm_oss            54848  0
snd_mixer_oss          19968  1 snd_pcm_oss
snd_pcm                93416  3 snd_emu10k1,snd_ac97_codec,snd_pcm_oss
snd_timer              24644  3 snd_seq,snd_emu10k1,snd_pcm
snd_page_alloc          9860  2 snd_emu10k1,snd_pcm
snd_util_mem            4512  2 snd_emux_synth,snd_emu10k1
snd_hwdep               9120  2 snd_emux_synth,snd_emu10k1
snd 56260 13 snd_emux_synth,snd_seq_virmidi,snd_seq_oss,snd_seq,snd_emu10k1,snd_rawmidi,snd_seq_device,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_hwdep
soundcore               9696  1 snd


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