====== Release Note of Ubuntu 16.04 LTS (v2.2) =====
----
===== Summary =====
|| Release Date | 2017-01-06 ||
|| Release Type | Update ||

**File name : ubuntu64-16.04lts-mate-odroid-c2-20170106.img.xz**

**Note: OS will reboot on the first boot for automatic rootfs resize**

===== New updates =====
  * Official US West Coast: [[http://odroid.in/ubuntu_16.04lts]]
  * Official US East Coast: [[http://east.us.odroid.in/ubuntu_16.04lts]] (Thanks to David Beauchamp @ ArchLinuxARM)
  * Official EU Germany: [[http://de.eu.odroid.in/ubuntu_16.04lts]]
  * Official Korea Mirror: [[http://dn.odroid.com/S905/Ubuntu]]


==== Kernel Updates ====
  * Better docker compatibility
  * CVE-2016-8655 Fix
  * USB traffic monitor(usbmon driver module) enabled
  * Better stability 
  * Option to control UHS feature
  * Improves USB device detection (http://forum.odroid.com/viewtopic.php?f=139&t=25079#p173356)
  * Added HDMI 480x800 resolution
  * Custom HDMI resolution support
  * Support Mali GPU on 3.5" LCD
  * Dirty-COW Bug Fix
  * Improves HDMI compatibility

==== Userspace Update ====
  * Improved Mali rendering performance (bug fix in fbturbo driver)

===== Known issues and tips =====
  * mySQL/KVM needs an editing of boot.ini file to change the system timer source to ARMv8 Architecture from the Meson. But the ARMv8 timer affects the VPU/GPU system accuracy.
  * NTP time syncing takes long time (sometimes around 1~2 minutes)
  * GPU acceleration should be enabled manually. Add below line into /etc/chromium-browser/default file.
  * <code>CHROMIUM_FLAGS=" --use-gl=egl --ignore-gpu-blacklist --disable-accelerated-2d-canvas --num-raster-threads=2"</code>
  * The root file system will be resized in the first booting process. OS will reboot automatically to complete the resizing process.
  * To enable Auto-login, edit /usr/share/lightdm/lightdm.conf.d/60-lightdm-gtk-greeter.conf file like this. <code>
[Seat:*]
greeter-session=lightdm-gtk-greeter
autologin-user=odroid </code>


===== How to update the kernel and system =====
  * <code>sudo apt-get update && sudo apt-get upgrade && sudo apt-get dist-upgrade </code>

===== The default boot.ini in V2.2 =====
  * Available here: https://github.com/mdrjr/c2_bootini/blob/master/boot.ini

===== How to checkout =====
The current version only provide Linux kernel and U-boot source code. Here are the instructions to checkout the source code and build. For more detail information, please visit [[en:c2_building_u-boot|U-boot]] and [[en:c2_building_kernel|Kernel]].

**This guide is only for the NATIVE BUILD.**
==== U-boot ====
<code>
$ git clone https://github.com/hardkernel/u-boot.git -b odroidc2-v2015.01
$ cd u-boot
$ make odroidc2_config
$ make
</code>
==== Linux Kernel ====
<code>
$ git clone --depth 1 https://github.com/hardkernel/linux -b odroidc2-3.14.y
$ cd linux
$ make odroidc2_defconfig
$ make -j5
$ sudo make modules_install
$ sudo cp arch/arm64/boot/Image /media/boot
$ sudo cp arch/arm64/boot/dts/meson64_odroidc2.dtb /media/boot
</code>

Run "**git checkout jenkins-deb_s905_kernel-102**" command to use the same kernel tag before "make odroidc2_defconfig".
===== Kodi Tips =====
  * [[c2_adjust_display_refresh_rate|Enabling Adjust Display Refresh Rate]]
  * [[c2_hdmi_passthrough|Enabling HDMI passthrough]]