en:spi_lcdshiled:autox [ODROID Wiki]

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====== Automatically start desktop GUI mode ======
Start the X window on the LCD automatically after booting.
===== 1. Module settings =====
Add following line in "/etc/modprobe.d/lcd32.conf" file.
  options fbtft_device name=odroid32 rotate=90 busnum=1 gpios=reset:21,dc:22 speed=32000000 cs=0
Add following lines in "/etc/modules"file.
  spi_s3c64xx
  fbtft_device

Edit "/etc/modprobe.d/blacklist-odroid.comf" file. **(Only Ubuntu 16.04 or higher is required)**\\
Comment the spi lines out.\\
<code>
...
...
#blacklist spidev
#blasklist spi_s3c64xx
...
...
</code>
===== 2. Xorg Configuration =====
Create a new config file.
  sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.old
  sudo vi /etc/X11/xorg.conf

And then, add following lines.
<code>
Section "Device"
    Identifier    "XU4 fbdev"
    Driver        "fbdev"
    Option        "fbdev" "/dev/fb0"
EndSection
</code>
  

===== 3. Auto login =====
Edit /etc/lightdm/lightdm.conf file to enable auto-login: (password: odroid)

<code>
odroid@odroid:~$ sudo vi /etc/lightdm/lightdm.conf
[sudo] password for odroid: 
odroid@odroid:~$ cat /etc/lightdm/lightdm.conf 
[SeatDefaults]
autologin-user=odroid
autologin-user-timeout=0
odroid@odroid:~$ 
</code>

If you want auto login on Ubuntu 16.04 \\
Edit /usr/share/lightdm/lightdm.conf.d/60-lightdm-gtk-greeter.conf file like this.
<code>
[SeatDefaults]
greeter-session=lightdm-gtk-greeter
autologin-user=odroid
</code>