[Spice-devel] spice update_area and handle_dev_update_async

[Christophe Fergeau]

Hey,

On Thu, Mar 17, 2016 at 02:05:30PM +0800, feihu929 at sina.com wrote:
> In Windows or Linux guest os with qxl video card,  when some window,
> button or label  call frequently update, the remote spice client will
> display  error background . The window, button or label will draw
> background with the desktop image.Start the qemu with
> SPICE_DEBUG_LEVEL,  the vm log show large number  update_area and
> handle_dev_update_async function called.It seems that the update_area
> and handle_dev_update_async funciton has some problem, maybe about
> async display or surface canvas draw error?

> For example , i am run matlab 2010 or matab 2012 in redhat 6.5 guest
> os , when open toolboxes Curve Fitting -> Spline Tool , the problem
> will happen.  the attachment  is the error screenshot image.

What is the host OS? (in particular QEMU/spice-server versions). I
assume the QXL driver you are running on the guest is the one shipped
with RHEL 6.5?
Have you been able to reproduce with other applications than matlab?
(if this happens with anything shipped with RHEL or Windows, that would
make reproducing/investigating much easier).

Christophe
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