Francesco Ariis wrote: > I recently acquired a roland a-500s midi keyboard and I have problems > using it under linux. When I connect the device via usb, dmesg tells me > this: > > [ 73.700119] usb 3-1: new full-speed USB device number 3 using uhci_hcd > [ 73.860165] usb 3-1: Product: A-500S > [ 73.860169] usb 3-1: Manufacturer: ROLAND > [ 73.867172] snd-usb-audio: probe of 3-1:1.0 failed with error -5 When in "Advanced Mode", most newer devices tell the driver in the descriptors how many MIDI ports they have; for older devices, the driver just has to know. Please show the "lsusb -v" output for this device in standard mode. Regards, Clemens _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user