[linux-audio-user] alsa /dev/sequencer oss compatability

Craig Maloney cmaloney at physics.ucsb.edu
Thu Jan 16 11:34:00 EST 2003


Hi all.  I have an on motherboard es1371 (which appears to be working 
fine, although I'm not using it for audio).  Can't seem to get the midi 
working.

Here's the skinny... relevant output of lsmod:

----------------------------------------------
snd-seq-midi            3136   0  (autoclean) (unused)
snd-seq-oss            22080   0  (autoclean)
snd-seq-midi-event      2792   0  (autoclean) [snd-seq-midi snd-seq-oss]
snd-seq                32812   2  (autoclean) [snd-seq-midi snd-seq-oss 
snd-seq-midi-event]
snd-card-ens1371        9408   0
snd-pcm                46176   0  [snd-card-ens1371]
snd-timer               9056   0  [snd-seq snd-pcm]
snd-rawmidi            11456   0  [snd-seq-midi snd-card-ens1371]
snd-seq-device          3744   0  [snd-seq-midi snd-seq-oss snd-seq 
snd-rawmidi]
snd-ac97-codec         22848   0  [snd-card-ens1371]
snd                    23336   2  [snd-seq-midi snd-seq-oss 
snd-seq-midi-event snd-seq snd-card-ens1371 snd-pcm snd-timer 
snd-rawmidi snd-seq-device snd-ac97-codec]
soundcore               3556   4  [snd]
-----------------------------------------------

$ ls -la /dev/sequencer
crw-rw----    1 root     audio     14,   1 Mar 14  2002 /dev/sequencer
------------------------------------------------

$ ls -la /proc/asound/dev
total 0
dr-xr-xr-x    2 root     root            0 Jan 13 21:57 .
dr-xr-xr-x    5 root     root            0 Jan 13 21:57 ..
crw-rw----    1 root     audio    116,   0 Jan 13 22:21 controlC0
crw-rw----    1 root     audio    116,   8 Jan 13 22:21 midiC0D0
crw-rw----    1 root     audio    116,  24 Jan 13 22:21 pcmC0D0c
crw-rw----    1 root     audio    116,  16 Jan 13 22:21 pcmC0D0p
crw-rw----    1 root     audio    116,  17 Jan 13 22:21 pcmC0D1p
crw-rw----    1 root     audio    116,   1 Jan 13 22:21 seq
crw-rw----    1 root     audio    116,  33 Jan 13 22:21 timer
-----------------------------------------------------------

presumably snd-seq-oss is the /dev/sequencer compatability layer (which 
I loaded explicitly). Neither playmidi nor rosegarden can seem to open 
/dev/sequencer. playmidi error:
-------------------------------------------------
playmidi: No playback device found
------------------------------------------------

Do I misunderstand the setup?  I am presuming that when I load 
snd-seq-oss, that it redirects /dev/sequencer to and from the alsa 
sequencer and the alsa sequencer is presumably hooked up to alsa 
raw-midi which presumably points to the joystick port on the es1371.  Is 
this right (I'm not so sure -- count the occurences of the word 
"presumably in the preceding ;) )?  If so, does anyone have any idea why 
it's not working?

Thanks in advance.
Cheers,
Craig




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