Re: usb keyboard aargh!

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On Sunday 20 August 2006 14:33, Tom Horsley wrote:
> On Sun, 2006-08-20 at 10:23 +0200, Trond Danielsen wrote:
> > On 8/20/06, Tom Horsley <tomhorsley@xxxxxxxxxxxx> wrote:
> > > So I find an option in my BIOS that says enable USB keyboard
> > > support, turn it on, and grub works perfectly, but now linux
> > > doesn't see the keyboard.
> >
> > What does lsusb say if you boot the computer with "USB keyboard
> > enabled" in the BIOS? Is it any different than if you boot it with
> > "usb keyboard disabled"?
>
> Looks like it isn't a consistent problem. If I go through
> a USB hub, sometimes it sees the keyboard sometimes
> it doesn't (same for mouse apparently). If I plug them
> directly into one of the usb ports on the motherboard,
> it always works fine (sigh... why does all this plug &
> play "it just works" stuff never work? :-).
>
> The motherboard BIOS never seems to have a problem seeing the
> keyboard via the hub so something about the linux usb
> bootstrapping must have some kind of timing problem.
> Grrr....

I know I had problems a while back like that.  Using an unpowered hub resulted 
in USB devices that had worked, when plugged straight into the port, failing 
to work when going through the hub.  I bought a powered hub (separate psu), 
and the problem went away.

Nigel.


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