Иксы запускаются, вроде работают, но выдают вот такие ошибки:
(EE) Failed to load module "vesa" (module does not exist, 0)
(EE) Failed to load module "fbdev" (module does not exist, 0)
(EE) AIGLX error: vboxvideo does not export required DRI extension
(EE) AIGLX: reverting to software rendering
(EE) VirtualBox USB Tablet: failed to initialize for relative axes.
INPUT_DEVICES="virtualbox evdev"
VIDEO_CARDS="virtualbox"
USE="dev-libs/libxml2-2.7.8-r3 python"