Hello,
I've been using the ALSA drivers in my laptop, a Toshiba
Satellite 1700-300, for more than few weeks now.
They used to work great, but recently I discovered a problem with midi.
This problem I had with ALSA 0.90rc5 and 0.90rc6 .
First of all, aconnect -o gives:
--
client 64: 'External MIDI 0' [type=kernel]
0 'MIDI 0-0 '
client 65: 'OPL3 FM synth' [type=kernel]
0 'OPL3 Port '
--
The problem is that 'pmidi -p 64:0 midifile.mid' locks my machine (I have
to reboot manually to make things work again); cat-ting some bytes to
/dev/midi?? produces the same effect.
I don't know exactly what that External MIDI interface is or should be. I
thought that it should be an external midi connector: but there is none
on my computer.
Maybe the lock depends on the absence of the midi port?
The driver expects it to be there so when probing the
non-existant-interface, the driver freeze my system?
Anyway, considering that I don't need that 'External MIDI' interface,
I'm searching for a way to disable it from modules.conf, if possible, or
directly from the cs4281.c file. Of course, any other solution to my
problem I would be glad to hear.
It's maybe worth reading that when I attach my EDIROL UM-1 usb-to-midi
interface to the computer, alsa creates another midi interface which
works as expected (not freezing the computer, but playing midi files on
my keyboard) :
--
client 72: 'External MIDI 1' [type=kernel]
0 'UM-1 Port 0 '
--
Also using OPL3 or timidity (as an alsa midi daemon) works as it
should.
Well, that said I'll list some configuration details.
'lsmod' gives:
---
Module Size Used by Tainted: PF
snd-usb-audio 46144 0 (autoclean)
snd-seq-oss 33920 0 (autoclean) (unused)
snd-seq-midi 4992 0 (autoclean) (unused)
snd-seq-midi-event 5640 0 (autoclean) [snd-seq-oss snd-seq-midi]
snd-opl3-synth 12772 0 (autoclean) (unused)
snd-seq-instr 7996 0 (autoclean) [snd-opl3-synth]
snd-seq-midi-emul 7212 0 (autoclean) [snd-opl3-synth]
snd-ainstr-fm 3088 0 (autoclean) [snd-opl3-synth]
snd-seq 47472 2 (autoclean) [snd-seq-oss snd-seq-midi
snd-seq-midi-event snd-opl3-synth snd-seq-instr snd-seq-midi-emul]
ide-cd 33668 0 (autoclean)
cdrom 33696 0 (autoclean) [ide-cd]
snd-pcm-oss 44420 0 (autoclean)
snd-mixer-oss 15512 0 (autoclean) [snd-pcm-oss]
snd-cs4281 15136 0 (autoclean)
snd-pcm 83296 0 (autoclean) [snd-usb-audio snd-pcm-oss snd-cs4281]
snd-rawmidi 18400 0 (autoclean) [snd-usb-audio snd-seq-midi snd-cs4281]
gameport 3396 0 (autoclean) [snd-cs4281]
snd-opl3-lib 8932 0 (autoclean) [snd-opl3-synth snd-cs4281]
snd-seq-device 6176 0 (autoclean) [snd-seq-oss snd-seq-midi snd-opl3-synth
snd-seq snd-rawmidi snd-opl3-lib]
snd-timer 15304 0 (autoclean) [snd-seq snd-pcm snd-opl3-lib]
snd-hwdep 5888 0 (autoclean) [snd-opl3-lib]
snd-ac97-codec 36100 0 (autoclean) [snd-cs4281]
snd 39308 0 (autoclean) [snd-usb-audio snd-seq-oss snd-seq-midi
snd-seq-midi-event snd-opl3-synth snd-seq-instr snd-seq snd-pcm-oss snd-mixer-oss
snd-cs4281 snd-pcm snd-rawmidi snd-opl3-lib snd-seq-device snd-timer snd-hwdep
snd-ac97-codec]
soundcore 6468 11 (autoclean) [snd]
ipt_state 1048 1 (autoclean)
ip_conntrack 21212 1 (autoclean) [ipt_state]
agpgart 42496 0 (unused)
vmnet 23584 4
vmmon 23092 0 (unused)
nfs 81248 2 (autoclean)
lockd 58288 1 (autoclean) [nfs]
sunrpc 77660 1 (autoclean) [nfs lockd]
8139too 17704 1
mii 2156 0 [8139too]
iptable_filter 2412 1 (autoclean)
ip_tables 14840 2 [ipt_state iptable_filter]
ds 8712 2
yenta_socket 12960 2
pcmcia_core 58144 0 [ds yenta_socket]
mousedev 5524 1
keybdev 2944 0 (unused)
input 5792 0 [mousedev keybdev]
hid 11796 0 (unused)
usb-uhci 26156 0 (unused)
usbcore 76992 1 [snd-usb-audio hid usb-uhci]
---
My 'modules.conf' is:
---
options ide-cd dma=1
alias eth0 8139too
# ALSA portion
alias snd-card-0 snd-cs4281
alias char-major-116 snd
# OSS/Free portion
alias char-major-14 soundcore
alias sound-slot-0 snd-card-0
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss
# USB Audio
alias snd-card-1 snd-usb-audio
alias sound-slot-1 snd-card-1
post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || :
pre-remove sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || :
alias usb-controller usb-uhci
alias parport_lowlevel parport_pc
# lt_drivers: autoloading and insertion parameter usage
alias char-major-62 lt_serial
alias /dev/tts/LT0 lt_serial
alias /dev/modem lt_serial
# The next two lines are syntax examples, only Rarely Needed, to automate parameter
usage during lt_drivers insertion. See documentation for details.
# options lt_modem vendor_id=0x115d device_id=0x0420
# options lt_modem Forced=3,0x130,0x2f8,0
# section for lt_drivers ends
---
My distribution is a Red Hat 8.0, with a custom 2.4.19 kernel and ALSA
0.90rc6 (compiled with all sound cards and --with-isapnp=no).
Thank you in advance for any help and for your work on these drivers,
Flavio Chierichetti
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