[ltp] USB 2.0 broken

Brad Langhorst linux-thinkpad@linux-thinkpad.org
Mon, 17 Dec 2007 13:26:26 -0500


On Mon, 2007-12-17 at 13:29 +0100, Joerg Platte wrote:
> Am Montag, 17. Dezember 2007 schrieb Joerg Bruehe:
> Hi,
>=20
> > 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).
>=20
> The USB 2.0 stuff is handled by another controller within the chipset.
>=20
> > Just to be sure: Did you check you have the necessary modules loaded ?
>=20
> Yes. When unloading ehci_hcd the device nodes are created, but the perfor=
mance=20
> is low. When loading ehci_hcd the LED of my USB stick starts flashing but=
 no=20
> nodes are created. So it seems only the USB 2.0 part is broken.
>=20
> regards,
> J=C3=B6rg

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