diff --git a/devices/video/atimach64gx.cpp b/devices/video/atimach64gx.cpp
index 07d2b7a..d78758c 100644
--- a/devices/video/atimach64gx.cpp
+++ b/devices/video/atimach64gx.cpp
@@ -162,6 +162,8 @@ AtiMach64Gx::AtiMach64Gx()
 
     // set the FIFO
     insert_bits<uint32_t>(this->regs[ATI_GUI_STAT], 32, ATI_FIFO_CNT, ATI_FIFO_CNT_size);
+
+    set_bit(regs[ATI_CRTC_GEN_CNTL], ATI_CRTC_DISPLAY_DIS); // because blank_on is true
 }
 
 void AtiMach64Gx::change_one_bar(uint32_t &aperture, uint32_t aperture_size, uint32_t aperture_new, int bar_num) {