Re: [LAU] MIDI keyboard not recognized

On Thu, 2012-09-13 at 21:11 +0200, Nigel Henry wrote:
> No. forget about snd_seq_midi as I've an idea it's only for soundcards that
> have a hardware synth like my Audigy 2 Soundblaster.
>
> More important is the usbcore module which Ralf mentions is missing in your
> lsmod. It's a dependency for snd_usb_audio and I've had someone else in the
> past where that wasn't loading and caused similar problems to yours.
>
> So do a:
> sudo modprobe usbcore
> If it doesn't immediately resolve the problem add it on a line in /etc/modules
> and reboot as it may need to be loaded before snd_usb_audio as it's a
> dependency. You'll need it in /etc/modules anyway if there's something
> stopping it being loaded automatically.

I booted Ubuntu Studio Precise.

spinymouse@email-addr-hidden:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
spinymouse@email-addr-hidden:~$ uname -a
Linux precise 3.2.0-23-lowlatency #31-Ubuntu SMP PREEMPT Wed Apr 11 02:24:03 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Connected a KORG nanoKONTROL

spinymouse@email-addr-hidden:~$ lsmod | grep usbcore
spinymouse@email-addr-hidden:~$

QJackCtl's ALSA tab does show "nanoKONTROL"

Disconnected the nanoKONTROL and connected a swissonic USB MIDI IO device

spinymouse@email-addr-hidden:~$ lsmod | grep usbcore
spinymouse@email-addr-hidden:~$

QJackCtl's ALSA tab does show "USB Device"

Reboot

spinymouse@email-addr-hidden:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
spinymouse@email-addr-hidden:~$ uname -a
Linux precise 3.0.30 #1 SMP PREEMPT Sun May 6 22:44:54 CEST 2012 x86_64 x86_64 x86_64 GNU/Linux

Connected a KORG nanoKONTROL

spinymouse@email-addr-hidden:~$ lsmod | grep usbcore
spinymouse@email-addr-hidden:~$

QJackCtl's ALSA tab does show "nanoKONTROL"

Disconnected the nanoKONTROL and connected a swissonic USB MIDI IO device

spinymouse@email-addr-hidden:~$ lsmod | grep usbcore

QJackCtl's ALSA tab does show "USB Device"

spinymouse@email-addr-hidden:~$ sudo modprobe usbcore
[sudo] password for spinymouse:
spinymouse@email-addr-hidden:~$

Both kernels are used with threadirqs. 3.2.0-23-lowlatency is from the repositories, 3.0.30 is a self-build kernel.

So here no usbcore too, but everything is ok.

Regards,
Ralf

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Received on Fri Sep 14 00:15:08 2012