Re: high-speed usb doesn't work

[Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>]

On Mon, 3 Dec 2007, David Griffith wrote:

> On Mon, 3 Dec 2007, Alan Stern wrote:
> > These are low-level hardware errors.  Maybe in the device, maybe caused
> > by the USB cable, maybe in your EHCI controller.
> >
> > Some tests to try:
> >
> > 	Does the device work at high speed in a different computer?
> 
> My Thinkpad T42 appears to have no trouble with it or a brand new thumb
> drive.
> 
> > 	Does it work in other ports on your computer or with a different
> > 	USB cable?
> 
> No.
> 
> > 	Do other high-speed devices work on your computer?
> 
> No.
> 
> > Go back and look at that bug report again.  It had "error -110", not
> > "error -71".  The two are very different.
> 
> The output of "lspci -v|grep HCI" is the following:
> 
> 00:02.0 USB Controller: nVidia Corporation nForce2 USB Controller (rev a4) (prog-if 10 [OHCI])
> 00:02.1 USB Controller: nVidia Corporation nForce2 USB Controller (rev a4) (prog-if 10 [OHCI])
> 00:02.2 USB Controller: nVidia Corporation nForce2 USB Controller (rev a4) (prog-if 20 [EHCI])
> 
> I found a post somewhere about support for this being provided as a patch
> against 2.6.22.  I guess the solution here is to get a USB card and make
> sure the chip isn't by nVidia.

Could be.  Or maybe you could improve matters by changing some of the 
BIOS's USB settings.  You might even find that a BIOS update fixes the 
problem.

Alan Stern


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