Re: USB3.0 problem: xhci_hcd not found
On Mon, 31 Jan 2011 20:27:12 +0000, Krzysztof Bieniasz wrote:
>> Yes, and it's curious that automatically fallbacks from "super-high-
>> speed" to "high-speed" unless you have connected a USB 2.0 device.
>> Maybe founds something that don't like.
> In fact they are usb 2.0 devices.
Ah, then all is okay, right?
> But I'm not examining speed here. They
> should work anyway. Nonetheless the messages are there all the time and
> at every boot, no matter if anything is connected to any of the usb
> ports. That goes for the "new full speed USB device using ehci_hcd"
> message as well.
You mean the message about a connected device when there is none attached
to any of the USB ports? Yep, that seems to be common:
sm01@stt008:~$ dmesg | grep -i new | tail -5
[ 10.588574] usb usb7: New USB device found, idVendor=1d6b, idProduct=0001
[ 10.615825] usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 10.751925] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 8
[ 10.991769] usb usb8: New USB device found, idVendor=1d6b, idProduct=0002
[ 11.003876] usb usb8: New USB device strings: Mfr=3, Product=2, SerialNumber=1
Besides, the "unable to enumerate USB device on port 5" is harmless
unles once you connect the device an isn't working.