====== Release Note of Ubuntu 15.04 (v1.1) =====
----
===== Summary =====
|| Release Date | 2015-07-10 ||
|| Release Type | Update Release ||
===== New updates =====
  * Official US West Coast: [[http://odroid.in/ubuntu_15.04]]
  * Official US East Coast: [[http://east.us.odroid.in/ubuntu_15.04]] (Thanks to David Beauchamp @ ArchLinuxARM)
  * Official EU Germany: [[http://de.eu.odroid.in/ubuntu_15.04]]
  * Official Korea Mirror: [[http://dn.odroid.com/5422/ODROID-XU3/Ubuntu/]]

===== New from previous versions =====
  * Ubuntu 15.04
  * Kernel 3.10.82
  * Fixed SPI Clock speed problem
  * Fixed the random reboot issue in the power-off process
  * Fixed non-working UHS-1 SD-card mode if OS reboot
  * Added Notro fbtft driver
  * Enabled Triple buffering
  * Add support to force the following resolutions on boot.ini: 1280x800, 1440x900, 1080p50hz, 640x480, 720x480, 720x675 and 800x600
  * Enabled more CPU governors modes. Performance, Interactive, Conservative, OnDemand and PowerSave. Default governor can be selected on boot.ini
  * Preparations to support XU4

===== Known issues =====
  * Mali r5p1 driver has an issue on eglConfigAttrib preventing some applications to run properly.
  * OpenGL ES 3.1 API doesn't work yet
  * Mali fbdev performance is still very low.
  * Tons of issues unsubscribed. :-x


===== GPU acceleration on the Chromium Web browser =====

Edit /etc/chromium-browser/default like this:\\
<code>
CHROMIUM_FLAGS=" --use-gl=egl --ignore-gpu-blacklist --disable-accelerated-2d-canvas --num-raster-threads=2"
</code>

You can see much smoother HTML rendering.
Try this link to test the Webgl on the ODROID.
[[http://helloracer.com/racer-s/|Webgl demo]]

Tip: When you exit the full-screen mode, the screens goes just black from time to time.\\
Press "Ctrl-Alt-F2" and "Ctrl-Alt-F7" as a workaround. \\
**Update**\\
The black screen issue has been resolved with the Kernel update of 3.10.92 or higher.

**Update** \\
If you use the latest Chromium Ver 43 or higher, the hardware acceleration doesn't work if you don't enable it manually. \\
Enter this in the URL box of the Chromium. <code>chrome://settings/</code> 
And click "Show advanced settings..." in the bottom side.  \\
Check "System - Use hardware acceleration when available" and restart the Chromium.\\



===== Kodi crashing when exit =====

The Kodi(xbmc) crashes when exit.

Workaround : Open a virtual terminal (ctrl-alt-F2) and kill it.

  * killall -9 kodi.bin

And return to desktop (ctrl-alt-F7)
===== Source Code =====
All source code used can be found here: https://github.com/mdrjr/5422_BSP

===== Linux Kernel =====
**This guide is only for the NATIVE BUILD.**
<code>
$ git clone --depth 1 https://github.com/hardkernel/linux -b odroidxu3-3.10.y
$ cd linux
$ make odroidxu3_defconfig
$ make -j9
$ sudo make modules_install
$ sudo cp arch/arm/boot/zImage /media/boot
$ sudo cp arch/arm/boot/dts/exynos5422-odroidxu3.dtb /media/boot
</code>