Re: USB3.0 problem: xhci_hcd not found
On Mon, 31 Jan 2011 18:52:44 +0000, Krzysztof Bieniasz wrote:
>> What kind of device do you have attached to the USB 3.0 port? What
>> happens if you attach another device?
>
> Just normal stuff: flash drives, external disks. But after installing
> firmware-linux they get detected, only the messages remain.
Yep, I just read your last post.
>> Hum, I would try the opposite: enforce the use of "ehci_hcd" (or
>> uchi_hcd, whatever you have it in your system) and see how it goes
>> (unload "xhci_hcd" and connect the USB 3.0 device to the USB 3.0 port,
>> then run "dmesg" to get the output messages).
>
> I tried "modprobe -r xhci_hcd" but I get the same error: FATAL: Module
> xhci_hcd not found.
> Still it seams that port in fact uses ehci insted of xhci -- look into
> my reply to Jimmy Johnson earlier in this thread.
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.
>> I guess that USB 3.0 stack is still under heavy development in the
>> latest kernel branch (2.6.37.x) :-?
>
> Might be, although there was a lot of hype that GNU/Linux was going to
> be the first system to support usb 3.0. Thanks for your help anyway.
Hey, that's true... but hurts ;-)
Maybe it's not the drivers to blame but the device (or even the USB
controller), you know, there are many chipset manufacturers out there who
are more interested in putting the "USB 3.0" logo to increase their sales
but their USB 3.0 implementation lacks for many of the standards
guidelines. And you know what happens then with all of those
"undocumented" features: they explode in front of the user :-)
Greetings,
--
Camaleón
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