On Fri, 16 Mar 2007, Claas Langbehn wrote:

> Hello!
> 
> >> Going on a limb here - faulty USB cable causes USB resets which throws
> >> off legacy emulation (which is done in SMM as well as KBC controller)
> >> which causes KCB to lose bytes. I would expect also seeing some
> >> keypresses not being registered but losing release is much more
> >> visible...
> >>     
> >
> > It's possible.  But the USB drivers try to take control of the host 
> > controllers away from the SMM BIOS.  How could legacy support work with 
> > both SMM and the Linux USBHID system trying to handle it?
> >   
> Please tell me what I can do to help to debug this strange behaviour.
> Repuducing the USB resets is easy, but reproducing the PS/2 influence
> takes long, since its hardly visible.

My advice is don't do anything and don't worry about it.  It really isn't 
an important problem.

Alan Stern

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