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Thread: /dev/midi1 does not appear for usb midi, on 11.04


when plug usb/midi 10.04 machine, character device /dev/midi1 appears can used (e.g. python) perform direct midi communications. when plug same unit laptop running 11.04, don't device.

device m-audio unit appears on lsusb:

code:
bus 002 device 007: id 0763:0150 midiman m-audio uno
other this, unit appears work fine on 11.04 laptop (works rosegarden). appears in /proc/asound/cards:

code:
 0 [intel          ]: hda-intel - hda intel                       hda intel @ 0xd5400000 irq 47  1 [interface      ]: usb-audio - usb uno midi interface                       m-audio usb uno midi interface @ usb-0000:00:1d.0-1.3, full speed
is /dev/midi1 no-longer-supported feature? if so, can re-enabled?

these in /var/log/syslog when connect unit


(on 10.4 machine):

code:
dec 30 13:21:12 ubu kernel: [169744.864300] usb 1-5.4.2: new full speed usb device using ehci_hcd , address 7 dec 30 13:21:12 ubu kernel: [169744.976114] usb 1-5.4.2: configuration #1 chosen 1 choice dec 30 13:21:13 ubu kernel: [169745.690953] usbcore: registered new interface driver snd-usb-audio dec 30 13:21:14 ubu pulseaudio[7795]: module-alsa-card.c: failed find working profile. dec 30 13:21:14 ubu pulseaudio[7795]: module.c: failed load  module "module-alsa-card" (argument: "device_id="1" name="usb-m-audio_usb_uno_midi_interface-00-interface" card_name="alsa_card.usb-m-audio_usb_uno_midi_interface-00-interface" tsched=yes ignore_db=no card_properties="module-udev-detect.discovered=1""): initialization failed. dec 30 13:21:14 ubu pulseaudio[2658]: module-alsa-card.c: failed find working profile. dec 30 13:21:14 ubu pulseaudio[2658]: module.c: failed load  module "module-alsa-card" (argument: "device_id="1" name="usb-m-audio_usb_uno_midi_interface-00-interface" card_name="alsa_card.usb-m-audio_usb_uno_midi_interface-00-interface" tsched=yes ignore_db=no card_properties="module-udev-detect.discovered=1""): initialization failed.
the following appears :
code:
$ls /dev/midi1 -l crw-rw----+ 1 root audio 14, 18 2011-12-30 13:21 /dev/midi1
on 11.04 laptop there log:

code:
dec 30 13:28:39 theodin kernel: [111901.172772] usb 2-1.3: new full speed usb device using ehci_hcd , address 5 dec 30 13:28:39 theodin pulseaudio[1392]: module-alsa-card.c: failed find working profile. dec 30 13:28:39 theodin pulseaudio[1392]: module.c: failed load  module "module-alsa-card" (argument: "device_id="1" name="usb-m-audio_usb_uno_midi_interface-00-interface" card_name="alsa_card.usb-m-audio_usb_uno_midi_interface-00-interface" tsched=yes ignore_db=no card_properties="module-udev-detect.discovered=1""): initialization failed.
and:
code:
lsmod | grep usb usbhid                 46956  0  hid                    91020  1 usbhid usb_wwan               20407  1 option usbserial              42908  2 option,usb_wwan usb_storage            53538  0  snd_usb_audio         112426  0  snd_usbmidi_lib        25139  1 snd_usb_audio snd_hwdep              13604  2 snd_usb_audio,snd_hda_codec snd_pcm                96391  4 snd_usb_audio,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec snd_rawmidi            30486  2 snd_usbmidi_lib,snd_seq_midi snd                    67382  16 snd_usb_audio,snd_usbmidi_lib,snd_hda_codec_hdmi,snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
the version of ubuntu not difference between 2 machines, of course, seems low-level issue , i'm seeing different major version after 'usb' in logs suspect that's big factor...

also, can point me overall docs of components in linux audio (alsa, jack, etc), , how work together? tried set qsynth on laptop , hang hard (killing audio until next reboot) when try load soundfont. ubuntu find basic desktop audio works, try more sophisticated, goes downhill pretty quickly, because don't understand of of i'm trying configure. messages 'module-alsa-card' failures above, instance, , warnings rosegarden when starts. wish knew going on -- , i'm prepared reading, i'd appreciate ideas on best place start.

thanks, all.



Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Multimedia Software [ubuntu] /dev/midi1 does not appear for usb midi, on 11.04


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