FIghting this problem too, was trying to build a vm from the current ISO. The previous poster's solution doesn't seem to apply cleanly for me - have quite a few more complaints, and then if proceed anyway, end up with a kernel/initrd combo that doesn't boot. Trying to build guest additions from the vbox sources (their iso) fails, as it quits claiming an unrecognized x11 version.
FIghting this problem too, was trying to build a vm from the current ISO. The previous poster's solution doesn't seem to apply cleanly for me - have quite a few more complaints, and then if proceed anyway, end up with a kernel/initrd combo that doesn't boot. Trying to build guest additions from the vbox sources (their iso) fails, as it quits claiming an unrecognized x11 version.
I am happy to report that the packages from the location listed above (https:/ /launchpad. net/~costamagna gianfranco/ +archive/ ubuntu/ virtualbox- ppa/+packages) do let things work for me.