On Thursday 13 September 2012 19:25, jy 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.
All the best.