Hello, Christophe The host os is redhat 7, qemu and spice is installed with redhat image. The QXL driver is too installed with guest os redhat 6.5. I just encountered the problem with matlab, maybe other applications not trigger the update_area fuction? >On Thu, Mar 17, 2016 at 02:05:30PM +0800, feihu929@xxxxxxxx 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 --- 此电子邮件没有病毒和恶意软件，因为 avast! 防病毒保护处于活动状态。 https://www.avast.com/antivirus _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/spice-devel