====== Release Note of Ubuntu 16.04 LTS (v2.1) =====
----
===== Summary =====
|| Release Date | 2016-10-17 ||
|| Release Type | Update ||

**File name : ubuntu64-16.04lts-mate-odroid-c2-20161017.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 ====
  * Upstream 3.14.79 merged
  * Improved stability for Wifi Module #4
  * new ODROID 3.5" LCD Kit support
  * Added support for the new Hifi Shield #2
  * UART ports now supports a minimum of 110 baud
  * Better thermal throttling handle
  * Custom HDMI resolution is possible [[en:c2_hdmi_autosetting|See Here]]
  * Frequency/Core count control [[en:c2_set_cpu_freq|How to set max cpu frequency and cores]]
  * Removed PWM debug messages
  * Removed USB debug messages
  * [[en:c2_watchdog_timer|Support Watchdog on Linux/Ubuntu]]
  * Fixed a Mali VSYNC issue
  * Enabled USB CDROM support
  * [[en:c2_gpio_pps|GPIO PPS Client]]
  * Added 1600x1200, 3440x1440 resolutions
  * Disabled a few OSD debug messages
  * Improved CEC Driver
  * Fixed 1920x1200 resolution issue
  * U-boot updated for better CPU voltages
  * U-boot updated for Power-on by official IR remote controller 


==== Userspace Update ====
  * Kodi 16.1 (Auto-framerate-switching [Adjust display refresh rate] works if HPD option is enabled)
  * CEC Support
  * apt-fast installed
  * Ubuntu updated to 16.04.1 LTS release
  * Xorg DDX Driver updated to fbturbo by [[https://github.com/ssvb/xf86-video-fbturbo|ssvb]] : Faster desktop GUI rendering.
  * Mouse cursor flickering issue on EGL surface issue was gone by the fbturbo.
  * LIRC is now installed by default setup for Hardkernel IR Remote
  * Mali package won't conflict with QT5 installations anymore.


===== Known issues =====
  * 64bit Firefox is very unstable (you need to try 32bit Firefox)
  * Some 4K video files rendering on Kodi is not smooth on 4K/UHD monitor
  * 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)
  * Tons of issues not listed. :-x

===== 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 V2.0 =====
  * 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-78**" 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]]