Re: vncviewer and broken mouse behaviour - is there a fix?

["Daniel P. Berrange" <berrange@redhat.com>]

On Thu, Feb 26, 2009 at 01:34:03PM +0100, Tomasz Chmielewski wrote:
> Avi Kivity schrieb:
> >Tomasz Chmielewski wrote:
> >>Currently, using mouse with vncviewer is a bit broken: "VNC mouse 
> >>pointer" moves much faster than the real mouse pointer.
> >>
> >>As a result, it's not always easy to point&click in the right area.
> >>
> >>Is there a workaround for that?
> >>
> >
> >-usbdevice tablet
> 
> I already use it:
> 
> qm> info usb
>   Device 0.0, Speed 12 Mb/s, Product QEMU USB Tablet
> 
> I wonder why it doesn't work for me (with kvm-83)?
> 
> Do I have to configure something special on the quest?

Yes, you need to make sure Xorg has activated the USB tablet, and is using
it in absolute coordinate mode. If Xorg is using the shared stream
/dev/input/mice, or not configured absolute mode, then the mouse pointer
will still not track 1-for-1.

In current state of the art Xorg, this should all happen automatically
if hal has labelled the USB tablet with 'input.x11_driver = evdev'. The
FDI rules for HAL are only just added though, so your distro is probably
missing them. See this bug for example of FDI rule you need to make 
Xorg auto-configure correctly

https://bugzilla.redhat.com/show_bug.cgi?id=487025

Regards,
Daniel
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