[Spice-devel] [PATCH] Adding new ioctl for updating Vdagent state

[Dmitry Fleytman]

> On 9 Aug 2016, at 16:03 PM, Christophe Fergeau <cfergeau at redhat.com> wrote:
> 
> Hey,
> 
> On Tue, Aug 09, 2016 at 03:22:52PM +0300, Dmitry Fleytman wrote:
>> 
>>> On 9 Aug 2016, at 14:23 PM, Christophe Fergeau <cfergeau at redhat.com> wrote:
>>> 
>>> On Tue, Aug 09, 2016 at 09:22:15AM +0300, Sameeh Jubran wrote:
>>>> Hi,
>>>> 
>>>> What do you think that needs to be done?
>>>> The patches should be applied?
>>>> The interface of the device should be extended to support broadcasting the
>>>> mouse mode to the driver? ( I think would require to modify the spice
>>>> protocol )
>>>> The interface of spice-gtk should be extended to support broadcasting the
>>>> mouse mode to vdagent?
>>> 
>>> The filtering of cursor commands depending on server/mouse mode is
>>> already done in spice-server in
>>> https://cgit.freedesktop.org/spice/spice/tree/server/cursor-channel.c#n438
>>> so I don't think we need to know too much about client/server mode in
>>> the guest driver. Maybe some VGA/QXL distinction will be needed to avoid
>>> some VGA-specific issues, but when using QXL, removing EnablePointer()
>>> altogether should do the right thing both in client and server mode (did
>>> not test).
>> 
>> Hi Christophe,
>> 
>> For some reason mouse movements are less smooth when we do not filter out mouse events on driver level.
>> I suspect this was the reason Sandy changed EnablePointer() behaviour of the driver.
>> 
>> Do you have any idea why could this happen?
> 
> Nope no idea, maybe too many events get sent? Adding the new ioctl
> while asking me this question at the same time sounds like we are just
> papering over an issue we don't understand.

Our investigation shows that this happens due to too many events indeed.
I thought, perhaps you have seen similar issues on other platforms (pre-win10/linux)
and have additional information.

> Do you notice this "smoothness" issue with legacy qxl-win or on linux?
> Is this in server on client mouse mode?
> 
> Christophe

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/spice-devel/attachments/20160809/4d6df5fd/attachment-0001.html>