I have a problem with my VirtualBox machine for Linux Ubuntu. I installed Windows 7 on my virtualBox machine, I have a Lenovo thinkpad x230, primarily using linux, but I also need Windows for some school projects and homeworks. The problem is I can not set the resolution 1366x768 in my virtual machine.
When I set up the machine in the section display I moved a slider to 256 MB, it is an Intel HD 4000 graphic card. There are 5 resoultions Windows offers me, 1024x768 suits the height of the creen but is centered and there is a huge black gap on both sides.
I tried going to advanced settings in screen resolution to check "Hide all modes display can't show..." but that box is grayed and I can not set my resolution manually. Please, anyone help ASAP. I can work like this but anyone who has this laptop knows how small the display is, and now VirtualBox is making it even smaller.