Try adding -usbdevice tablet.  This should sort it out.

2009/1/6 Antoine Martin <[email protected]>:
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> [email protected] wrote:
>>>>  Hi everybody,
>>>>
>>>>  I switched to KVM some time ago from vmware and VB. Everything works
>>>>  great but there are noticeable lags in mouse motion in comparison with
>>>>  other VMs.
>>>>  Is this a known issue? Are there any optimizations for that?
>>>>
>>>>  KVM: 79
>>>>  Distr: Ubuntu Intrepid & Jaunty
>>>>  Command line: QEMU_AUDIO_DRV=sdl; kvm -net nic -net user -soundhw
>>>>  es1370 -m 750 -smp 2 win.qcow
>>>>
>>>
>>> Is this under guest or host load?  Or just moving the mouse around?
>>>
>>> Is the host swapping by any chance?
>>
>> I've noticed that issue on guest load, no swapping.
>> But even just moving the mouse around feels more laggy then under vmware.
>> I've tried mine with just 1 guest cpu.
>
> I've noticed what I believe to be the same bug: when moving the mouse
> around the vnc viewer, the guest does not seem to follow the same
> acceleration and I end up with 2 pointers completely out of sync.
>
> This makes it really hard to use the mouse (especially as the real
> pointer often moves off-screen before you reach the part of the guest
> screen that you need..)
> I normally would not care about mouse and UI (I run most guests in
> no-graphic mode), but I have to run some tests against "that-other-OS"
> at the moment, and this makes it even more of a nightmare.
>
> Any advice would be much appreciated.
> I have tried various VNC clients (no effect), looked for mouse options,
> etc..
>
> Thanks
> Antoine
>
>
>
>
>
>
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-- 
Jamie Kirkpatrick
07818 422311
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