Re: Enable xhci_hcd

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On Mon, Jul 01, 2013 at 05:41:34PM -0700, Greg KH wrote:
> On Tue, Jul 02, 2013 at 12:30:41AM +0000, Sultana wrote:
> > Greg KH <gregkh@...> writes:
> > 
> > 
> > > If it's a loadable module, and it's not being loaded, then that usually
> > > means you don't have xhci hardware on your system.  If you run 'lspci'
> > > does it show a XHCI controller?  What is the output of that command?
> > > 
> > > greg k-h
> > > --
> > 
> > Hi,
> > 
> > lspci shows the following output regarding host controller 
> > 
> > 00:1a.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host
> > Controller #2 (rev 04)
> > 00:1d.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host
> > Controller #1 (rev 04)
> 
> Those are ehci controllers, not xhci ones (i.e. USB 2, not USB 3), so
> the kernel is working as designed.

Lynx Point should have an xHCI host controller as well.  I don't know of
any chipset skew that doesn't have an xHCI host.  Perhaps the BIOS is
hiding the xHCI PCI device from the OS?  Have you tried going into the
BIOS and seeing if there is a way to enable the xHCI host?

Sarah Sharp
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