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:
other this, unit appears work fine on 11.04 laptop (works rosegarden). appears in /proc/asound/cards:code:bus 002 device 007: id 0763:0150 midiman m-audio uno
is /dev/midi1 no-longer-supported feature? if so, can re-enabled?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
these in /var/log/syslog when connect unit
(on 10.4 machine):
the following appears :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.
on 11.04 laptop there log:code:$ls /dev/midi1 -l crw-rw----+ 1 root audio 14, 18 2011-12-30 13:21 /dev/midi1
and: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.
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...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
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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