Re: Mouse motion lags

Antoine Martin
2009-01-06T13:05:11Z

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Jamie Kirkpatrick wrote:
> Try adding -usbdevice tablet. This should sort it out.

Thank you very much. That did the trick!

>
> 2009/1/6 Antoine Martin <antoine@nagafix.co.uk>:
> nuitari@melchior.nuitari.net 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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>>

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