Novatek USB Keyboard/Mouse Bug

Novatek USB Keyboard/Mouse Bug

[Ivan Gyurdiev]

Hi, I finally figured out why my wireless mouse turns off and on 
randomly every once in a while and works depending on the usb hub it is 
in - it's the keyboard's fault.

My mouse is:
PM: Adding info for usb:2-2
input: USB HID v1.10 Mouse [Logitech USB Receiver] on usb-0000:00:10.0-2

My keyboard is:
PM: Adding info for usb:2-1
input: USB HID v1.00 Keyboard [NOVATEK Keyboard NT6881] on 
usb-0000:00:10.0-1
PM: Adding info for usb:2-1:0
input: USB HID v1.00 Mouse [NOVATEK Keyboard NT6881] on usb-0000:00:10.0-1
PM: Adding info for usb:2-1:1


As you can see the kernel thinks it's also a mouse, which it definitely 
is not. I've previously posted this to LKML somewhere, and my 
impressions were that people don't think it's a bug, since some other 
model of that keyboard worked together with a mouse somehow. Perhaps 
that's true, but I do not have a second mouse. The kernel thinks I do, 
and switching the keyboard and the mouse usb hubs results in mouse 
devices reordering and X not working with the proper mouse (attempting 
to use the keyboard as mouse, which apparently does not work).

Re: Novatek USB Keyboard/Mouse Bug

[Greg KH]

On Thu, Aug 28, 2003 at 05:51:42PM -0400, Ivan Gyurdiev wrote:
> Hi, I finally figured out why my wireless mouse turns off and on 
> randomly every once in a while and works depending on the usb hub it is 
> in - it's the keyboard's fault.
> 
> My mouse is:
> PM: Adding info for usb:2-2
> input: USB HID v1.10 Mouse [Logitech USB Receiver] on usb-0000:00:10.0-2
> 
> My keyboard is:
> PM: Adding info for usb:2-1
> input: USB HID v1.00 Keyboard [NOVATEK Keyboard NT6881] on 
> usb-0000:00:10.0-1
> PM: Adding info for usb:2-1:0
> input: USB HID v1.00 Mouse [NOVATEK Keyboard NT6881] on 
> usb-0000:00:10.0-1
> PM: Adding info for usb:2-1:1
> 
> 
> As you can see the kernel thinks it's also a mouse, which it definitely 
> is not. I've previously posted this to LKML somewhere, and my 
> impressions were that people don't think it's a bug, since some other 
> model of that keyboard worked together with a mouse somehow. Perhaps 
> that's true, but I do not have a second mouse. The kernel thinks I do, 
> and switching the keyboard and the mouse usb hubs results in mouse 
> devices reordering and X not working with the proper mouse (attempting 
> to use the keyboard as mouse, which apparently does not work).

Why not just use /dev/mice and then you don't have to worry about the
mice ording issue?

Also lots of USB keyboards have a fake "mouse" within them to handle
some of the extended keys.  It's quite common.

thanks,

greg k-h

Re: Novatek USB Keyboard/Mouse Bug

[Ivan Gyurdiev]

> Why not just use /dev/mice and then you don't have to worry about the
> mice ording issue?


Hmm..didn't know I could do that - will work, I guess.
Thank you.