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Old 12-08-2003, 10:10 PM   #1
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Registered: Dec 2003
Distribution: RH 9
Posts: 5

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ALSA serial sound problem

I've been unable to get my Yamaha keyboard hooked up to my Dell laptop (Inspiron 8000 running RH9). I'm trying to use the serial port; my sound card has no MIDI port. With both OSS and ALSA, I can play MIDI files to the keyboard just fine, but can't go the other way; I'd like to be able to record what I play. Works out of the box on my spouse's Windows laptop...

Here's the relevant part of my /etc/modules.conf:
# ALSA native devices
alias char-major-116 snd
options snd cards_limit=2
alias snd-card-0 snd-maestro3
alias snd-card-1 snd-serial-u16550
pre-install snd-serial-u16550 /bin/setserial /dev/ttyS0 uart none > /dev/null 2>&1
options snd-serial-u16550 port=0x3f8
Here's sample output from aconnect -iol
client 0: 'System' [type=kernel]
0 'Timer '
1 'Announce '
client 72: 'External MIDI 1' [type=kernel]
0 'MIDI 1-0 '
Connecting To: 128:0
client 128: 'ALSA Midi recorder' [type=user]
0 'ALSA Midi recorder'
Connected From: 72:0
This is the configuration I'd like to use, with Tuomas Airaksinen's midirecord rather than a synthesizer; no luck. I have no trouble going the other way, either directly (pmidi -p 72:0 file.mid) or indirectly (I can make music on my real keyboard using vkeybd and aconnect). I've tried other programs (Jazz, Rosegarden, TiMidity) without success, although some of that may be due to compilation problems. I would wonder whether it's a setting on the keyboard itself, except I have no problem connecting to Jazz on a Windows machine (using a driver provided by Yamaha), and I'm pretty sure I could get some delayed output with TiMidity under ALSA 0.5, although I no longer have ready access to that version.

Whew! Anyone have any ideas? Thanks!


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