On Mon, 2014-05-26 at 13:17 +0200, Martin Rudhart wrote:
> Thank your for your reply,
>
> A summary of my Bugreport at Launchpad:
> My usb-Webcam Logitech c920 doesn't work when connected to my usb 3.0
> Host Controller (Etron EJ168a). When connected to a usb 2.0 Host
> Controller it works perfectly. When I connect my usb 3.0 stick to the
> same port, it's recognized and also works - just not the Webcam.
> Disabling usb 3.0 Legacy Mode (xhci) in my Bios doesn't change anything,
> It's still used instead of ehci.
>
> Ubuntu 14.04 x64
> 3.13.0-24-generic
> Mainboard: Asrock Z68 Pro3 Gen3
> Bios: P2.30 (latest)
>
> Here's what dmesg shows if I un/replug the webcam with the
> mainline/upstream kernel (3.15.0-031500rc6-generic amd64):
>
> dmesg | grep xhci
> [ 165.165101] usb 3-1: new high-speed USB device number 3 using xhci_hcd
> [ 166.411905] xhci_hcd 0000:06:00.0: ERROR: unexpected command
> completion code 0x11. (multiple instances)
Parameter error.
Please switch on xhci dynamic debugging.
But whatever you do, never ever mutilate a bug report like this.
Never ever grep around and drop parts of the report. And don't
put things on an external server one cannot access with all tools.
Regards
Oliver
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
