Release Note of Ubuntu MATE 18.04 LTS (v4.0)

Summary

Release Date	2018-05-01
Release Type	new image

File name : ubuntu-18.04-4.14-mate-odroid-xu4-20180501.img.xz

XU4 OS image is fully compatible with HC1, MC1 and XU3.

Official US West Coast: http://odroid.in/ubuntu_18.04lts
Official US East Coast: http://east.us.odroid.in/ubuntu_18.04lts (Thanks to David Beauchamp @ archlinuxarm)
Official EU Germany: http://de.eu.odroid.in/ubuntu_18.04lts
Official Korea Mirror: http://dn.odroid.com/5422/ODROID-XU3/Ubuntu/

Ubuntu 18.04 LTS Bionic Beaver with Mate Desktop
Kernel 4.14.37 LTS (the latest LTS Kernel version at this moment)
OpenGL ES 3.1 and OpenCL 1.2 drivers for Mali T628MP6 GPU
X11 armsoc display driver with full-screen VSYNC implementation
Kernel header package is improved to support the DKMS driver build
Support ARM streamline performance analyzer (https://wiki.odroid.com/odroid-xu4/application_note/arm_streamline_on_xu4)
FFMPEG with hardware accelerated H.264 decoder
SDL patched with OpenGL ES Support
GPU accelerated Chromium browser
Kodi 17.6 playback 1080p/60fps H.264 files without tearing
CPU performance-counter feature works with big and little cores for more efficient HMP program development
WiringPi and other GPIO/SPI/I2C/ADC/IRQ tinkering libraries are available
KVM feature is ready to run
Docker feature is ready to run
And many other features

The RootFS Auto-resize feature has changed!!! 
Once everything is done after auto-resize, the power will turn off automatically. Wait a couple of minutes.
And press the power button if the blue LED is off.

Tons of issues undocumented.
Mali GPU access could be blocked by a recent Canonical's EGL package. In that case, you need to install our Mali driver manually.

sudo apt-get install mali-x11 --reinstall

To change CPU governor to “ondemand”, refer this guide
boot.ini tweaking doesn't work with Kernel 4.14 any more.
VLC doesn't start due to a video driver compatibility issue.
The first time launching of Chromium takes around one minute due to internal initialization process. After that, it starts in 1~2 seconds.
To enable Auto-login, edit /usr/share/lightdm/lightdm.conf.d/50-greeter-wrapper.conf file like this.

[SeatDefaults]
greeter-session=lightdm-gtk-greeter
autologin-user=odroid

Some UASP capable USB-to-SATA bridge controllers are not compatible. If your external HDD is not working properly, add its VID/PID in boot.ini Boot arguments to disable the UAS function something like this.
```
usb-storage.quirks=0x0bc2:0x2322:u
```
The Youtube video quality on Chromium browser can be improved a lot with “h264ify” extension in Chrome Web Store. 720p/30fps videos are fine with the extension.
How to test Qt5 GPU acceleration.

sudo apt install qtbase5-examples
/usr/lib/arm-linux-gnueabihf/qt5/examples/opengl/cube/cube

Username		Password
root		odroid
odroid		odroid

target

sudo apt update
sudo apt upgrade
sudo apt dist-upgrade
sudo reboot

This guide is only for the NATIVE BUILD. Run it on the board.

Installing building tools

You may need to install the building tools.

target

$ sudo apt-get install git gcc g++ build-essential libssl-dev bc

Download and build the kernel source

Updating Kernel and DTB (Device Tree Blob)

Please note that native kernel compile on ODROID-XU4 will take about 25 minutes.

target

$ git clone --depth 1 https://github.com/hardkernel/linux -b odroidxu4-4.14.y
$ cd linux
$ make odroidxu4_defconfig
$ make -j8
$ sudo make modules_install
$ sudo cp -f arch/arm/boot/zImage /media/boot
$ sudo cp -f arch/arm/boot/dts/exynos5422-odroid*dtb /media/boot
$ sync

Updating root ramdisk (Optional)

target

$ sudo cp .config /boot/config-`make kernelrelease`
$ sudo update-initramfs -c -k `make kernelrelease`
$ sudo mkimage -A arm -O linux -T ramdisk -C none -a 0 -e 0 -n uInitrd -d /boot/initrd.img-`make kernelrelease` /boot/uInitrd-`make kernelrelease`
$ sudo cp /boot/uInitrd-`make kernelrelease` /media/boot/uInitrd
$ sync

You would check all necessary files are in place as below before reboot. The file size would differ.

target

$ ls -l /media/boot/
total 14756
-rwxr-xr-x 1 root root    9536 Oct 25 23:29 boot.ini
-rwxr-xr-x 1 root root     753 Aug 20 22:38 boot.ini.default
-rwxr-xr-x 1 root root   62565 Nov  2 01:24 exynos5422-odroidxu3.dtb
-rwxr-xr-x 1 root root   61814 Nov  2 01:24 exynos5422-odroidxu3-lite.dtb
-rwxr-xr-x 1 root root   62225 Nov  2 01:24 exynos5422-odroidxu4.dtb
-rwxr-xr-x 1 root root   61714 Oct 25 23:30 exynos5422-odroidxu4-kvm.dtb
-rwxr-xr-x 1 root root 9996513 Nov  2 01:27 uInitrd
-rwxr-xr-x 1 root root 4844744 Nov  2 01:24 zImage