On 23 April 2015 at 21:59, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > On Thu, Apr 23, 2015 at 09:50:14PM +0100, Chris Bainbridge wrote: >> Hardware: IvyBridge Macbook (Panther Point PCH), 2 external USB3 ports >> Verified in kernels: 4.0.0+ (1fc1499), Debian 3.16.4 >> >> All USB3 devices appear as USB2 high-speed (480mbps) rather than USB3 >> super-speed (5000mbps). > > Are you sure you actually have a device that runs at that speed? A USB > 3 device can run at "low speed" and still be USB 3 compliant (backwards > compatibility issues ensure this.) Sorry, stupid mistake, please ignore bug report... I used some tiny USB extension cables to save plugging directly in to the laptop and did not realise that they cause the port to downgrade to USB2 (I had thought a device would still appear on the USB3 bus in this case, just with slower speed). It might be an idea to log a warning when a SuperSpeed capable device is connected to a USB2 port/bus like this. All the USB3 devices are now connected to bus2 with speed 5000M. There is still another error initialising the VIA USB hub which I will investigate and report later. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
