en:c1_ubuntu_release_note_v1.5 [ODROID Wiki]

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====== Release Note of Ubuntu 14.04.3 LTS (v1.5) =====
----
===== Summary =====
|| Release Date | 2015-08-11 ||
|| Release Type | Production Image ||

===== New updates =====
  * Official US West Coast: [[http://odroid.in/ubuntu_14.04lts]]
  * Official US East Coast: [[http://east.us.odroid.in/ubuntu_14.04lts]] (Thanks to David Beauchamp @ ArchLinuxARM)
  * Official EU Germany: [[http://de.eu.odroid.in/ubuntu_14.04lts]]
  * Official Korea Mirror: [[http://dn.odroid.com/S805/Ubuntu]]


==== Kernel Updates ====
  * Mali Updated to r5p1
  * Enabled CGROUP_CPUSET
  * Realtek 8191su support
  * Realtek 8192du support
  * Realtek 8812au support
  * Added FBIO_WAITFORVSYNC ioctl support (Thanks to crashoverride)
  * Fixed FBIOPAN_DISPLAY ioctl (Thanks to crashoverride)
  * Support for DVBSky USB, TechnoTrend CT2 4400 and TecnoTrend CT2 4650 CI (Thanks to joukestoel)
  * Added support for 2.2" BW LCD (fb_st7565)
  * PPS GPIO for AMLogic Device Tree (Thanks fo Joakim L. Gilje)
  * Ethernet Bonding enabled
  * Latest AUFS for 3.10 merged
  * Enabled SquashFS Support
  * GPIO Interrupt support [[en:c1_hardware_irq|Hardware GPIO-IRQ]]
  * Enabled AMVideoCap on device-tree for boblight (Thanks to StrikerHF)
  * ODROID I2S Hifi Shield support (C1+) 
  * CEC name reported
  * AMLogic frame automation support
  * CEC Enter(return) key fixed
  * Fixed SDCards that wouldn't return to UHS mode after reboot
  * Fixed Kodi issue while playing videos with external subtitles


==== Userspace Update ====
  * Updated Mali to r5p0
  * Ubuntu packages up to 20150725

===== 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://oos.moxiecode.com/js_webgl/md5_test/|Webgl demo]]

**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..." on the bottom side.  \\
Check "System - Use hardware acceleration when available" and restart the Chromium.\\

===== Known issues =====
  * EXT2/4 file system can not be accessible on U-boot.
  * FAT16/32 can be supported on U-boot.
  * Tons of issues not listed. :-x
  * Kodi MPEG2 playback is stuttering on some videos.

===== How to Upgrade =====
  * <code>sudo apt-get update && sudo apt-get dist-upgrade && sudo apt-get upgrade</code>

===== The default boot.ini in V1.5 =====
  * Available here: https://github.com/mdrjr/c1_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:c1_building_u-boot|U-boot]] and [[en:c1_building_kernel|Kernel]].

**This guide is only for the NATIVE BUILD.**
==== U-boot ====
<code>
$ git clone https://github.com/hardkernel/u-boot.git -b odroidc-v2011.03
$ cd u-boot
$ make odroidc_config
$ make
</code>
==== Linux Kernel ====
<code>
$ git clone https://github.com/hardkernel/linux -b odroidc-3.10.y
$ cd linux
$ make odroidc_defconfig
$ make uImage modules
$ make dtbs
$ sudo make modules_install
$ sudo cp arch/arm/boot/uImage /media/boot
$ sudo cp arch/arm/boot/dts/meson8b_odroidc.dtb /media/boot
</code>