USB problems on PC Engines APU2C4

[Mike Tancsa]

On 7/24/2018 2:48 PM, Stefan Bethke wrote:
> The USB2 ports on the APU are not exposed in the case, and I don’t really feel like trying to drill a hole into the case to try and get the adapter cable out. The only ports available on the case are the two USB3 ports.
> 
> How could I go about debugging the XHCI driver that apparently has trouble communicating? Is there some more debug bits I can enable?


Not sure about debugging the xhci driver, but if you compile out the
xhci driver from your kernel, and then after the APU2 has booted load it
(or leave it unloaded) does the USB device behave as expected on its
normal external ports ?  I had to do this on an older version of the
board to work around some timing issues.

	---Mike



-- 
-------------------
Mike Tancsa, tel +1 519 651 3400 x203
Sentex Communications, mike at sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada