DBA University Blog: How to fix VNC Viewer black screen
blog.dbauniversity.com › 2015Feb 22, 2015 · The VNC Viewer desktop background turns into a full black screen intermittently. It does not happen all the time and one of our students observed that this issue happens consistently when she hovers her mouse on the VNC Config icon on the top left hand corner. This issue happens even if this icon is minimized. This observation is correct.