[ltp] USB 2.0 broken

[Konstantin Filtschew]

On Mon, 2007-12-17 at 13:26 -0500, Brad Langhorst wrote:
> On Mon, 2007-12-17 at 13:29 +0100, Joerg Platte wrote:
> > Am Montag, 17. Dezember 2007 schrieb Joerg Bruehe:
> > Hi,
> > 
> > > No idea about any possible hardware issues (other than that it would
> > > surprise me if a mouse worked and a disk did not, because of hardware).
> > 
> > The USB 2.0 stuff is handled by another controller within the chipset.
> > 
> > > Just to be sure: Did you check you have the necessary modules loaded ?
> > 
> > Yes. When unloading ehci_hcd the device nodes are created, but the performance 
> > is low. When loading ehci_hcd the LED of my USB stick starts flashing but no 
> > nodes are created. So it seems only the USB 2.0 part is broken.
> > 
> > regards,
> > Jörg
> 
> This is a classic  problem on the T40... mine ran in uhci mode for over
> a year after that happened. Others saw it as a sign of impending usb
> failure.
> 
> You could put in a pcmcia usb card or just practice being zen while
> waiting for transfers.
> 
> brad
> 

Hi,

same for my T40 too. It worked for 3,5 years fine and then it was
broken.

For me this is a hardware issue, because windows do the same and both
windows and linux were reinstalled for tests on a clean harddisk.


PCMCIA is the only solution I know about.

I've blacklisted ehci_hcd (USB 2.0 modul), so I can use USB 2.0 devices
with USB 1.1. Of cause it's very slow, but better then errors.


Greetz

Konstantin Filtschew

-- 
Building an operation system without source code,
is like buying a self assemble space shuttle
without instructions.