Re: [gtk-vnc-devel] Looping and real problems with localhost connections

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

On Fri, Jul 20, 2007 at 09:26:50PM -0300, Grabber wrote:
> I`m studing an developing some things to XEN project and i use VNC on it.
> 
> We have a several problem with VNC connections on the same DISPLAY, the
> mouse have a delay and the usability is poor!
> 
> I read this page explaining the problem:
> http://blogs.gnome.org/markmc/2006/09/29/xen-and-x-pointer-issues/
> 
> I wanna to help to develop a solution for this, how we can work?

If you don't mind editing your Xorg.conf file then this is basically already
solved.

For paravirt guests you should be able to add

  Section "InputDevice"
     Name "Mouse0"
     Driver "evdev"
     Option "Name" "Xen Virtual Mouse"
     Option "Mode" "Absolute"
  EndSection

For  fullyvirt guests you should add 'usb=1' and 'usbdevice=tablet' to
the Xen config file for the guest. Then in the Xorg.conf you should again
be able to add

  Section "InputDevice"
     Name "Mouse0"
     Driver "evdev"
     Option "Name" "QEMU 0.8.2 QEMU USB Tablet"
     Option "Mode" "Absolute" 
 EndSection


NB, The use of Option "Name" requires a pretty recent Xorg evdev driver.
For older drivers you need to specify the explicit device in /dev/input/

Dan.
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