[Alsa-user] No sound - where to look next?

[Peter Harris]

Hi

I have no sound, but can't tell what is wrong.  Is there a 
troubleshooting flowchart
somewhere, or a checklist of tests I can work through to find out?

I am using the ALSA that came with kernel 2.6.0-test4.  lspci says:
00:0f.0 Multimedia audio controller: ESS Technology ES1969 Solo-1 
Audiodrive (rev 02)

lsmod says:
Module                  Size  Used by
snd_seq_midi            6496  0
snd_opl3_synth         13956  0
snd_seq_instr           7936  1 snd_opl3_synth
snd_seq_midi_emul       6848  1 snd_opl3_synth
snd_ainstr_fm           2304  1 snd_opl3_synth
snd_seq_oss            32000  0
snd_seq_midi_event      6208  2 snd_seq_midi,snd_seq_oss
snd_seq                51152  8 
snd_seq_midi,snd_opl3_synth,snd_seq_instr,snd_seq_midi_emul,snd_seq_oss,snd_seq_midi_event
snd_pcm_oss            47588  0
snd_mixer_oss          16768  1 snd_pcm_oss
snd_es1938             19300  0
snd_opl3_lib            9216  2 snd_opl3_synth,snd_es1938
snd_hwdep               6816  1 snd_opl3_lib
gameport                3584  1 snd_es1938
snd_intel8x0           28356  0
snd_ac97_codec         50756  1 snd_intel8x0
snd_pcm                86180  3 snd_pcm_oss,snd_es1938,snd_intel8x0
snd_timer              21252  3 snd_seq,snd_opl3_lib,snd_pcm
snd_page_alloc          9028  3 snd_es1938,snd_intel8x0,snd_pcm
snd_mpu401_uart         6016  2 snd_es1938,snd_intel8x0
snd_rawmidi            20256  2 snd_seq_midi,snd_mpu401_uart
snd_seq_device          6472  6 
snd_seq_midi,snd_opl3_synth,snd_seq_oss,snd_seq,snd_opl3_lib,snd_rawmidi
snd                    43492  18 
snd_seq_midi,snd_opl3_synth,snd_seq_instr,snd_seq_oss,snd_seq_midi_event,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_es1938,snd_opl3_lib,snd_hwdep,snd_intel8x0,snd_ac97_codec,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device
soundcore               6976  1 snd

/proc/asound contains a directory called card0 which is my es1938

alsamixer allows me to adjust most of the bars up and down, mute and 
unmute channels and so on. However I don't know which if any of
them are important. I have everything possible turned up to the top of 
the green bar and unmuted. No sound.

What can I test to pin this down?  What should I be looking for to 
identify the problem?

Peter Harris



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