2011/3/10 Thomas Orgis <thomas-fo...@orgis.org> > Am Thu, 10 Mar 2011 10:44:49 +0100 > schrieb Giuliano Braglia <forever...@gmail.com>: > > > I will receive the alesis io2 express next week :) > > > > can anyone tell me if I have to do something particular in order to > install > > it? > > You simply plug in the USB wire (yay for bus power), the "USB" LED should > light up on the device and the kernel should give a brief note in dmesg: > > shell$ dmesg > usb 3-1: new full speed USB device using uhci_hcd and address 2 > 2:1:1: cannot get freq at ep 0x1 > usbcore: registered new interface driver snd-usb-audio > > Then, you should have plain ALSA devices, for audio: > > shell$ LANG=C aplay -l > **** List of PLAYBACK Hardware Devices **** > card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] > Subdevices: 1/1 > Subdevice #0: subdevice #0 > card 0: Intel [HDA Intel], device 1: Conexant Digital [Conexant Digital] > Subdevices: 1/1 > Subdevice #0: subdevice #0 > card 1: io2 [io|2], device 0: USB Audio [USB Audio] > Subdevices: 1/1 > Subdevice #0: subdevice #0 > > ... and for MIDI (I had to load the snd-seq module on a custom install, I > doubt you'll have to do that): > > shell$ LANG=C aconnect -o > client 14: 'Midi Through' [type=kernel] > 0 'Midi Through Port-0' > client 20: 'io|2' [type=kernel] > 0 'io|2 MIDI 1 ' > shell$ LANG=C aconnect -i > client 0: 'System' [type=kernel] > 0 'Timer ' > 1 'Announce ' > client 14: 'Midi Through' [type=kernel] > 0 'Midi Through Port-0' > client 20: 'io|2' [type=kernel] > 0 'io|2 MIDI 1 ' > > > Select the respective ALSA device for JACK to use and you're set. Of course > you can just use it with ALSA applications, too. Only restriction is, when > you use the hw device directly, your app must support 24 bit sample format > (really s24_3, as that is what makes it possible to shift 24bit/48kHz > through USB 1 reliably). But the default plughw does the necessary > conversion for you. > > I'll quickly test MIDI with hydrogen... using the swissonic USB MIDI > thingie as thru cable ... yes, I can record and play MIDI from/to my Roland > drum computer. No idea about jitter, but basic functionality is there. > > Really, I'm extremely happy with this box ... no issues, especially > compared to the hair-pulling I had over getting a system that plays nicely > with the firewire setup (but then, I don't have 8 analog channels on the > io|2). > > Cool! It's ok if the restriction is to use it with jack, because that's what I wanted to do. I think mainly rosegarden and ardour.
I'll keep you up to date. Thanks Gyl
-- Ubuntu-Studio-users mailing list Ubuntu-Studio-users@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users