[alsa-devel] Hercules P32 DJ: severe sound distortion during MIDI transfers

[Clemens Ladisch]

Guido Trentalancia wrote:
> Also, the hardware is the same: Hercules P32 DJ (with exactly the same
> firmware version 1.46 which is the latest).

Are the USB controllers the same (2.0/3.x, OHCI/UHCI/EHCI/xHCI)?

You wrote that "amidi -p hw:2,0,0 -d" causes the problem.  As long as no
MIDI messages are actually received, the kernel or driver cannot affect
what happens on the USB bus; the polling is done entirely by the host
controller.


Regards,
Clemens