virtualbox.org

4.3.10 significantly changed the full screen behavior using dual monitors and non-independent "spaces"

My setup - Mavericks 10.9.2 through 2 x 27" Dells. Spaces is on. Independent spaces is turned off in Mission Control.

What I expected :

Previous versions of VirtualBox and Windows 7 guests were configured to use one display - the right side. When I flipped to a space with the right side a Windows 7 VirtualBox, I had full use of the left display for Mac related things. Often, I'd have a Safari window open on the left display to solve a Windows problem in the right display.

Now, full screen VirtualBox 4.3.10 Windows 7 forces itself into it's own 'space' taking up both displays while leaving the right display blank. I briefly plugged through the preferences and settings and couldn't find an option to *not* create a separate 'Space' when starting a new virtual machine in Full Screen -> Right Monitor mode.

Please let me know if there is a way to fix this in the current version and if not, please direct me to the feedback form where I can request they fix this bug.

you might try changing the Mission Control settings in System Preferences. I don't know if it will help but it's worth a shot.

Try this:

- Shut down your VM
- Untick all Mission Control tickboxes.
- Log out and log back in again
- Tick "Displays have separate Spaces" AND "When switching to an application, switch to a Space with open windows for the application"
- Log out and log back in again
- Leave all other Mission Control tickboxes off
- Restart your VM

Now see if you can your Mac screen to not blank out..