[Tfug] USB bugaboo on Thinkpads

[Claude Rubinson]

On Fri, Jun 13, 2008 at 05:17:28PM -0700, John Karns wrote:
> On Thu, Jun 12, 2008 at 10:06 PM, Claude Rubinson <rubinson at u.arizona.edu> wrote:
> >
> > Assuming that this is the same problem that my notebook suffers, this
> > is a known problem in the community.  I don't know if current
> 
> What model?

T40.

> > ThinkPads also suffer.  It's not actually the USB ports but, rather,
> > something in the motherboard.  USB1 works but USB2 doesn't.  I tried
> > (and failed) to get IBM to replace the motherboard so my eventual
> > solution was to simply disable USB2, falling back to USB1.  Not a big
> > deal for me as I don't use USB peripherals much but maybe a deal
> > breaker for others.
> 
> I haven't noticed a BIOS option on my machine to disable one or the other.

Not in the bios but, rather, after boot via a `modprobe -r ehci_hcd`
in my /etc/rc.local.

Claude