Resolve VNC and guest cursor are not consistence

This is because qemu connects the mouse as an emulation of a tablet device. 

Try to use this in xorg.conf in the VM:

Section "ServerLayout"

Identifier "single head configuration"

Screen 0 "Screen0" 0 0

InputDevice "Keyboard0" "CoreKeyboard"

InputDevice "Tablet" "SendCoreEvents"

InputDevice "Mouse" "CorePointer"

EndSection

Section "InputDevice"

Identifier "Mouse"

Driver "void"

#Option "Device" "/dev/input/mice"

#Option "Emulate3Buttons" "yes"

EndSection

Section "InputDevice"

Identifier "Tablet"

Driver "evdev"

Option "Device" "/dev/input/event2"

Option "CorePointer" "true"

EndSection