Re: USB keyboard not generating input events.

[Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>]

On Fri, 27 Jul 2007, Chris Ball wrote:

> Hello,
> 
> I have a MacNTouch keyboard[1].  The keyboard works on all of my Linux
> machines except one, a Powerbook.  Other USB keyboards work in the same
> USB port on the Powerbook, so it doesn't seem like a hardware failure
> on either the Powerbook or the keyboard's part.  The problem seems to
> be the combination of the keyboard with the USB controller.
> 
> There's a (long) dmesg below.  It looks like the keyboard enumerates to
> HID, but then I just don't see any input events.  On the machines the
> keyboard works with, I can cat /dev/input/event<n> and see noise when
> I use it; on the Powerbook, I see nothing at all on the input devices.
> 
> I've already tried turning off CONFIG_USB_SUSPEND.  Are there any
> quirks that might be helpful to try, or any other ideas?  I'd be
> very happy to try patches to gather data/help find the problem.

Try getting a usbmon trace (instructions in 
Documentation/usb/usbmon.txt).

Alan Stern


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