I have a AWE64 card:
kernel: isapnp: Card 'Creative SB AWE64 PnP'
I am having problems getting it to play midi files using aplaymidi,
playmidi and the like. It has worked happily in the past.
Yesterday, after several hours of experimentation I mananaged to get
asfxload to load fonts, and playmidi would then work with some of them.
Since I was floundering around, I don't have a clear idea of what I did,
but I certainly had to manually load a large number of modules before
the messages like "No Emux synth hwdep device is found" from afsxload
went away. (This is on a debian sarge system, but with stock 2.6.18.3
kernel). Likewise, playmidi eventually stopped complaining "No playback
device found". (strace showed at that point that /dev/sequencer was
being opened successfully, but then a couple of ioctls failed.)
Above is background information and shows that the hardware is fine and
can (almost) work with 2.6.18.3 with the modules that I have compiled.
Today, I had hoped to dig a bit deeper understand the problem, but I
cannot even get as far as yesterday :-(
At this point I have:
$ asfxload
No Emux synth hwdep device is found
The modules loaded are:
----------------------------------------------------------------------------------
~# lsmod|grep snd
snd_rtctimer 2688 0
snd_emux_synth 34560 0
snd_seq_virmidi 5504 1 snd_emux_synth
snd_seq_midi_emul 6752 1 snd_emux_synth
snd_seq_oss 31904 0
snd_seq_midi 6528 0
snd_seq_midi_event 5728 3 snd_seq_virmidi,snd_seq_oss,snd_seq_midi
snd_seq 47056 8
snd_emux_synth,snd_seq_virmidi,snd_seq_midi_emul,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_util_mem 3520 1 snd_emux_synth
snd_sbawe 31168 0
snd_opl3_lib 9088 1 snd_sbawe
snd_sb16_dsp 9376 1 snd_sbawe
snd_sb16_csp 18368 1 snd_sbawe
snd_sb_common 14592 3 snd_sbawe,snd_sb16_dsp,snd_sb16_csp
snd_hwdep 7268 3 snd_emux_synth,snd_opl3_lib,snd_sb16_csp
snd_mpu401_uart 6688 1 snd_sbawe
snd_rawmidi 19520 3 snd_seq_virmidi,snd_seq_midi,snd_mpu401_uart
snd_seq_device 6636 7
snd_emux_synth,snd_seq_oss,snd_seq_midi,snd_seq,snd_sbawe,snd_opl3_lib,snd_rawmidi
snd_pcm_oss 44160 0
snd_mixer_oss 16288 1 snd_pcm_oss
snd_pcm 72392 3 snd_sbawe,snd_sb16_dsp,snd_pcm_oss
snd_timer 20132 4 snd_rtctimer,snd_seq,snd_opl3_lib,snd_pcm
snd 44612 17
snd_emux_synth,snd_seq_virmidi,snd_seq_oss,snd_seq,snd_sbawe,snd_opl3_lib,snd_sb16_dsp,snd_sb16_csp,snd_sb_common,snd_hwdep,snd_mpu401_uart,snd_rawmidi,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
snd_page_alloc 8232 1 snd_pcm
soundcore 7328 1 snd
rtc 10132 2 snd_rtctimer
-------------------------------------------------------------------------------------------------
I am thus puzzled why asfxload can't see the device.
I am also puzzled by
-------------------------------------------------------
#cat /proc/asound/oss/sndstat
Sound Driver:3.8.1a-980706 (ALSA v1.0.12rc1 emulation code)
Kernel: Linux conquest3 2.6.18.3 #1 Sun Nov 19 13:23:25 GMT 2006 i686
Config options: 0
Installed drivers:
Type 10: ALSA emulation
Card config:
Sound Blaster 16 at 0x220, irq 10, dma 1&5
Audio devices:
0: DSP v4.16 (DUPLEX)
Synth devices: NOT ENABLED IN CONFIG
Midi devices:
0: Sound Blaster 16 MIDI
Timers:
7: system timer
Mixers:
0: CTL1745
--------------------------------------------------------------
The above
Synth devices: NOT ENABLED IN CONFIG
yet
snd_seq_oss, snd_emux_synth and snd_seq_device
are all loaded.
An extract from strace on asfxload gives:
-----------------------------------
open("/dev/snd/controlC0", O_RDONLY) = 3
close(3) = 0
open("/dev/snd/hwC0D2", O_RDONLY) = -1 ENODEV (No such device)
open("/dev/snd/controlC0", O_RDONLY) = 3
close(3) = 0
open("/dev/snd/hwC0D2", O_RDONLY) = -1 ENODEV (No such device)
stat64("/usr/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=7640,
...}) = 0
open("/dev/snd/controlC1", O_RDONLY) = -1 ENODEV (No such device)
open("/dev/aloadC1", O_RDONLY) = -1 ENODEV (No such device)
stat64("/usr/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=7640,
...}) = 0
open("/dev/snd/controlC2", O_RDONLY) = -1 ENODEV (No such device)
open("/dev/aloadC2", O_RDONLY) = -1 ENODEV (No such device)
stat64("/usr/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=7640,
...}) = 0
open("/dev/snd/controlC3", O_RDONLY) = -1 ENODEV (No such device)
open("/dev/aloadC3", O_RDONLY) = -1 ENODEV (No such device)
stat64("/usr/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=7640,
...}) = 0
open("/dev/snd/controlC4", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("/dev/aloadC4", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/usr/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=7640,
...}) = 0
open("/dev/snd/controlC5", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("/dev/aloadC5", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/usr/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=7640,
...}) = 0
open("/dev/snd/controlC6", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("/dev/aloadC6", O_RDONLY) = -1 ENOENT (No such file or
directory)
stat64("/usr/share/alsa/alsa.conf", {st_mode=S_IFREG|0644, st_size=7640,
...}) = 0
open("/dev/snd/controlC7", O_RDONLY) = -1 ENOENT (No such file or
directory)
open("/dev/aloadC7", O_RDONLY) = -1 ENOENT (No such file or
directory)
write(2, "No Emux synth hwdep device is fo"..., 36No Emux synth hwdep
device is found
) = 36
----------------------------------------------------
Before I go any further, can someone tell me what is wrong at this
stage? Perhaps the modules must be loaded in different order?
In passing, I would also be grateful for pointers for introductory
documentation for alsa. I did browse some of the API documentation, but
lacked any overview to put the details in context.
Thanks in anticipation for any help or hints...
A Lawrence
PS. I found many messages reporting similar problems, but all seemed to
be either simple failure to load modules, or were not apparently
resolved. Sometimes people were told to use timidity instead!
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