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.
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