diff --git a/Controllers/MSIRGBController/MSIRGBController.cpp b/Controllers/MSIRGBController/MSIRGBController.cpp
index 782d99ffa..74ca4256f 100644
--- a/Controllers/MSIRGBController/MSIRGBController.cpp
+++ b/Controllers/MSIRGBController/MSIRGBController.cpp
@@ -16,6 +16,19 @@ MSIRGBController::MSIRGBController(int sioaddr)
 {
     msi_sioaddr = sioaddr;
 
+    /*-----------------------------------------------------*\
+    | This setup step isn't well documented                 |
+    | Without this, pulsing does not work                   |
+    \*-----------------------------------------------------*/
+    superio_outb(msi_sioaddr, SIO_REG_LOGDEV, 0x09);
+
+    int val = superio_inb(msi_sioaddr, 0x2C);
+
+    if((val & 0x10) != 0x10)
+    {
+        superio_outb(msi_sioaddr, 0x2C, (val | 0x10));
+    }
+
     /*-----------------------------------------------------*\
     | Set logical device register to RGB controller         |
     \*-----------------------------------------------------*/