[LAU] Roland A500S: snd-usb-audio error -5

[Clemens Ladisch]

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