--------- Original Message --------- Subject: Re: [Libusbx-devel] libusbx
1.0.15 with ASMedia xHCI Controller - some ports don't work
From: "Xiaofan Chen" <xiaof...@gmail.com>
Date: 6/9/13 10:02 pm
To: libusbx-devel@lists.sourceforge.net
On Sat, Jun 8, 2013 at 7:08 AM, <j...@serialtek.com> wrote:
> We have an Asus motherboard with ASMedia xHCI USB 3.0 controller and have
> tested driver versions 1.14.3.0 (latest Asus version from 2011) and 1.16.4.0
> (latest web version we could find, 11/8/2012) and it has the weird behavior
> on libusbx 1.0.15 that a USB 3.0 device cannot be seen by our software in
> libusb_get_device_list() on certain ports. On that motherboard there are
> two of said xHCI controllers and three hubs, and on each hub, the device can
> only be seen on one of the ports.
>
> We saw this behavior on Windows Server 2008 which was recently replaced on
> the same motherboard by WIndows 7 Enterprise and it has exactly the same
> behavior.
>
> Our device, an MSC device (TI USB-SATA bridge chip with their standard MSC
> firmware) bound to winusb by Zadig, shows up in the Device Manager under
> "USB Devices" regardless of the hub port used, but libusb_get_device_list()
> only lists it when it's on one certain port per hub.
>
> We've looked through the libusb and libusbx archives and even derivative
> discussion boards, and I've seen complete opacity under certain drivers of
> Renesas and Intel USB 3.0 controllers, but not port-selective opacity. And
> we found these other controllers are fully working with the latest
> controller drivers and libusbx 1.0.15 release.
>
> Let me know if you need any other information about this problem.
You can try usbview to see if it has the same problem or not. If yes,
then most likely it is a problem with the vendor driver. Take note
until Windows 8, you are at the mercy of the vendors with regard
to USB 3.0.
usbview is part of Microsoft WDK. An older version is here.
http://www.ftdichip.com/Support/Utilities.htm
http://www.ftdichip.com/Support/Utilities/usbview.zip
--
Xiaofan
Thanks for the response. For some reason, usbview refuses to execute on this
system -- just spins the "hourglass" for a few seconds and then nothing
happens.
Nothing identifiable in the task manager's application list, nothing in the
list of
processes... Does this mean something?
FYI, windows device manager sees it on all ports, and Zadig sees it in its
list on all ports.
Regards,
John
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