Added option for the graphics controller.

builder/virtualbox/iso/builder.go

@@ -65,10 +65,16 @@ type Config struct {
 	// When set to virtio, the NICs are VirtIO.
 	NICType string `mapstructure:"nic_type" required:"false"`
 	// The audio controller type to be used.
-	// When set to ac97, the audio controller is ICH AC97 (default).
+	// When set to ac97, the audio controller is ICH AC97. This is the default.
 	// When set to hda, the audio controller is Intel HD Audio.
 	// When set to sb16, the audio controller is SoundBlaster 16.
 	AudioController string `mapstructure:"audio_controller" required:"false"`
+	// The graphics controller type to be used.
+	// When set to vboxvga, the graphics controller is VirtualBox VGA. This is the default.
+	// When set to vboxsvga, the graphics controller is VirtualBox SVGA.
+	// When set to vmsvga, the graphics controller is VMware SVGA.
+	// When set to none, the graphics controller is disabled.
+	GfxController string `mapstructure:"gfx_controller" required:"false"`
 	// The guest OS type being installed. By default this is other, but you can
 	// get dramatic performance improvements by setting this to the proper
 	// value. To view all available values for this run VBoxManage list
@@ -225,6 +231,20 @@ func (b *Builder) Prepare(raws ...interface{}) ([]string, []string, error) {
 			errs, errors.New("NIC type can only be 82540EM, 82543GC, 82545EM, Am79C970A, Am79C973, Am79C960 or virtio"))
 	}
 
+	if b.config.GfxController == "" {
+		b.config.GfxController = "vboxvga"
+	}
+	switch b.config.GfxController {
+	case "vboxvga", "vboxsvga", "vmsvga", "none":
+		// do nothing
+	default:
+		errs = packersdk.MultiErrorAppend(
+			errs, errors.New("Graphics controller type can only be vboxvga, vboxsvga, vmsvga, none"))
+	}
+
+	if b.config.AudioController == "" {
+		b.config.AudioController = "ac97"
+	}
 	switch b.config.AudioController {
 	case "ac97", "hda", "sb16":
 		// do nothing

builder/virtualbox/iso/step_create_vm.go

@@ -26,7 +26,7 @@ func (s *stepCreateVM) Run(ctx context.Context, state multistep.StateBag) multis
 
 	name := config.VMName
 
-	commands := make([][]string, 9)
+	commands := make([][]string, 10)
 	commands[0] = []string{
 		"createvm", "--name", name,
 		"--ostype", config.GuestOSType, "--register",
@@ -59,6 +59,7 @@ func (s *stepCreateVM) Run(ctx context.Context, state multistep.StateBag) multis
                           "--nictype6", config.NICType,
                           "--nictype7", config.NICType,
                           "--nictype8", config.NICType}
+	commands[9] = []string{"modifyvm", name, "--graphicscontroller", config.GfxController}
 
 	ui.Say("Creating virtual machine...")
 	for _, command := range commands {