id summary reporter owner description type status component version resolution keywords cc guest host 9863 There are no windows visible on Ubuntu 11.10 guest on a Mac OS Lion (10.7.2) with Virtualbox 4.1.6 and guest additions installed in Unity 3D. Matthew Sedam "When I installed Ubuntu 11.10 Oneiric Ocelot on Virtualbox 4.1.6 on Mac OS X 10.7.2 Lion and install guest additions, no windows will show on Unity 3D. When I click on Firefox, for example, no window is visible, but I can still maximize it and minimize it, but I cannot see it. Some workaround to this, I have found, are: to use ""killall nautilus"" or to login to Unity 2D and use ""compiz --replace"". I think the problem is with guest additions and the X.org, Nautilus, and Compiz." defect closed GUI VirtualBox 4.1.6 fixed Ubuntu 11.10 Mac OS X Lion 10.7.2 no windows compiz nautilus Linux Mac OS X