Emacs redraws sometimes partially when scrolling or doing incremental searching. Following error messages are output in `/var/log/Xorg.0.log` when this problem occurs. > [ 1278.046] (EE) vmwgfx_scanout_update: failed to send dirty (-22, Invalid argument) There are some reports of this problem: * Super User: ubuntu - Emacs does not redraw properly inside VirtualBox <http://superuser.com/questions/702494/> * Oracle VM VirtualBox: #13687 (Emacs redraw issues with >1 Virtualbox CPU) <https://www.virtualbox.org/ticket/13687> Vim also has the similar problems: * Stack Overflow: linux - Gvim redraw issues with Virtual Box and Windows 7 host <http://stackoverflow.com/questions/25018843/> * Debian Bug report: #777567 - vim-gtk: Regions of text fail to redraw in gvim <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=777567> * Super User: vim - gvim redraw failure <http://superuser.com/questions/343599/>
Created attachment 126580 [details] test program I created a test probgam to reproduce this bug. This bug begin if you resize the window bigger.
Created attachment 126581 [details] [review] Patch
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