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@precise:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04.1 LTS Release: 12.04 Codename: precise spinymouse@precise:~$ 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@precise:~$ lsmod | grep usbcore spinymouse@precise:~$ QJackCtl's ALSA tab does show "nanoKONTROL" Disconnected the nanoKONTROL and connected a swissonic USB MIDI IO device spinymouse@precise:~$ lsmod | grep usbcore spinymouse@precise:~$ QJackCtl's ALSA tab does show "USB Device" Reboot spinymouse@precise:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04.1 LTS Release: 12.04 Codename: precise spinymouse@precise:~$ 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@precise:~$ lsmod | grep usbcore spinymouse@precise:~$ QJackCtl's ALSA tab does show "nanoKONTROL" Disconnected the nanoKONTROL and connected a swissonic USB MIDI IO device spinymouse@precise:~$ lsmod | grep usbcore QJackCtl's ALSA tab does show "USB Device" spinymouse@precise:~$ sudo modprobe usbcore [sudo] password for spinymouse: spinymouse@precise:~$ 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 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
