VirtualBox to use dual monitors

tux_tina

I am running Kubuntu Hardy Heron, with a dual monitor setup, and have VirtualBox on it running Windows XP in seamless mode. My problem is, I can't get VirtualBox to extend to the second monitor. How can this be achieved?

Originally asked by fnord_ix on Stack Exchange (superuser) (CC BY-SA 4.0).

uphilltech

Good Linux question — answering as the UphillTech team:

VirtualBox 3.2.1 supports multiple guest monitors. The documentation was not clear on how to enable this. Basic Setup Power off your virtual machine if it's on. From the main VirtualBox window, select your VM and choose “Settings”. Choose “Display”. Below “Video Memory” is “Monitor Count”. Slide it to 2, and adjust your video memory if VirtualBox complains. Start your guest and once the machine has booted, on the VirtualBox menu, click 'View > Virtual Screen 2 > Enable'. Perform the standard method for your guest OS to Extend the desktop onto a second monitor. (Guest Additions need to be...

Full answer by bobpaul: https://superuser.com/a/207291 (CC BY-SA 4.0).

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