diff --git a/Devterm-CM3-ubuntu-server-image.md b/Devterm-CM3-ubuntu-server-image.md
index fb079d3..b235171 100644
--- a/Devterm-CM3-ubuntu-server-image.md
+++ b/Devterm-CM3-ubuntu-server-image.md
@@ -6,8 +6,9 @@
 Edit /boot/cmdline.txt and /etc/fstab of this img   
 **/boot/cmdline.txt**  
 ```
-console=serial0,115200 console=tty1 root=PARTUUID=78e1086a-02  rootfstype=ext4 elevator=deadline rootwait fixrtc splash
+console=serial0,115200 console=tty1 root=PARTUUID=78e1086a-02  rootfstype=ext4 elevator=deadline rootwait fixrtc splash fbcon=rotate:1
 ```
+to use HDMI console,consider to remove **fbcon=rotate:1** in `/boot/cmdline.txt`
 
 **/etc/fstab**  
 ```