Try and use Libertine to get this really working.
How to install Ubuntu MATE on BQ Aquaris M10 Ubuntu Edition
T=Tablet D=Desktop
(Shameless plug: https://github.com/MariusQuabeck/magic-device-tool )
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(T) Enable developer mode on the tablet
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(D) Install tools
sudo add-apt-repository ppa:ubuntu-sdk-team/ppa
sudo apt update
sudo apt install android-tools-adb phablet-tools
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Connect your tablet to your computer
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(D) phablet-shell (^you may need to run it twice)
cd ~/Downloads/
wget http://cdimage.ubuntu.com/ubuntu-touch/xenial/daily-preinstalled/current/xenial-preinstalled-touch-armhf.tar.gz
mkdir -p ~/xenial-chroot
cd ~/xenial-chroot
Extract the tarball, when prompted for a password it is your unlock code/passphrase.
sudo tar --same-owner -xvf ~/Downloads/xenial-preinstalled-touch-armhf.tar.gz
Mount directories into the chroot. You have to do this after each reboot. Some directories may be missing in the chroot, make them as required.
sudo mount --bind /proc /home/phablet/xenial-chroot/proc
sudo mount --bind /dev /home/phablet/xenial-chroot/dev
sudo mount --bind /sys /home/phablet/xenial-chroot/sys
sudo mount --bind /run/shm /home/phablet/xenial-chroot/run/shm
sudo mount --bind /tmp /home/phablet/xenial-chroot/tmp
sudo mount --bind /var/lib/dbus /home/phablet/xenial-chroot/var/lib/dbus
sudo mount --bind /run/dbus /home/phablet/xenial-chroot/run/dbus
sudo mount --bind /run/user/32011 /home/phablet/xenial-chroot/run/user/32011
sudo mount --bind /dev/pts /home/phablet/xenial-chroot/dev/pts
sudo cp /etc/resolv.conf /home/phablet/xenial-chroot/etc/resolv.conf
Enter the chroot
sudo chroot /home/phablet/xenial-chroot
Install Ubuntu MATE
apt update
apt upgrade
apt-get install --no-install-recommends ubuntu-mate-core
apt-add-repository ppa:ubuntu-mate-dev/xenial-mate
apt update
apt full-upgrade
apt autoremove
apt clean
addgroup --gid 32011 phablet
adduser --uid 32011 phablet
adduser phablet phablet
adduser phablet adm
adduser phablet sudo
Exit the chroot
/usr/bin/Xmir --desktop_file_hint=/usr/share/applications/webbrowser-app.desktop -damage -debug -dpi 224 :10 >> ~/xmir.txt 2>&1
Open another terminal (D)
phablet-shell
sudo chroot ~/xenial-chroot
sudo su phablet
export DISPLAY=:10
mate-session