Mer on Nexus7

DISCLAIMER: This project is not endorsed or supported by any company. This is purely a community based effort.

This page describes the running Mer on Nexus 7 (see Community_Workspace/Tegra3 for common Tegra3 stuff).

The hardware adaptation is maintained in the project [1]

The Plasma active instructions are quite generic and can be easily adapted to other images as well.

Hardware Adaptation Status

Device Profile	Boots	Display	Touchscreen	Wireless	Mobile Data	H/W Accel. GFX	Sensors	GPS
Nexus 7 (wifi)	Yes	Yes	Yes	Yes	N/A	Yes	kernel, yes	unknown
Nexus 7 (gprs)	Yes	Yes	Yes	Yes	not tested	Yes	kernel, yes	unknown

Plasma Active on Nexus7

Installation

See Community_Workspace/Tegra3/Nexus7/PA_installation.

Known Issues

See Community_Workspace/Tegra3/Nexus7/PA_Known_Issues

Workarounds

Keyboard

If you have issues with the default keyboard you should give this one a try: To install it just:

  zypper ar -G http://repo.pub.meego.com/home:/wonko:/branches:/Project:/KDE:/Trunk:/Testing/CE_UX_PlasmaActive_armv7hl/home:wonko:branches:Project:KDE:Trunk:Testing.repo
  zypper up maliit-active libmaliit-quick
  killall -9 maliit-server

Nemo Mobile

All the major things are working, including accelerated video, OpenGL ES, and window compositing.

Top issues

FIXED: X.Org/VT problems, if the display blanks. Run "chvt 2 && sleep 1 && chvt 1" e.g. over ssh to recover.
Tearing (doesn't seem to include video/OpenGL ES)

Hardware support

Accelerometer / Gyroscope

All files are in /sys/devices/platform/tegra-i2c.2/i2c-2/2-0068/iio:device0

mpu6050 (sensor in Nexus 7) configuration:

configure buffer: "# echo 10 > buffer/length". 10 is choosen by me at random. -- Glueckself 23:49, 28 January 2013 (UTC)
configure desired axes / values: "# echo 1 > scan_elements/in_*_en". This command has to be run on all desired values, "> in_*_en" is not a valid redirection.
enable buffer: "# echo 1 > buffer/enable"

The data can then be read from in_{accel,anglvel}_{x,y,z}_raw.

Touchscreen rotation

There is a modified mtev driver that supports rotation (via the "Rotation" parameters).

Xinput <= 1.5.4 needs to be installed (>1.5.4 needs a newer xi library). xrandr/xinput values are: normal/3, left/2, inverted/1, right/0.

The UI can then be rotated via xrandr.

Please note that this doesn't support animations. There are also a few issues (half drawn background, some cursor issues).

libhybris/Wayland

First step is to build android see [ASOP instructions http://source.android.com/] Extract the build environment then down load drivers For wifi version dowload grouper drivers and for gprs version the tilapia drivers extract them into your android build env. now use lunch full_grouper-userdebug or full_tilapia-userdebug as appropriate (this step take some time) you need to tar up the system directory in out/target/product/grouper/ or out/target/product/tilapia/ and extract into the root of your nexus nemo. chown -R root.root system and chmod -R g+r system to fix some missing permissions. add mer:qt:devel and nemo:devel:hw:android:common repositoies and install libhybis packages, qt5-qtwayland-wayland_egl examples eglfs platform plugin. The tegra3 driver should be replaced with the libhybris versions You will need to make to nvidia devive read/write to group video /dev/asmem /dev/*nv* /dev/*tegra* Now you should be able to run test_glesv2 Make sure you have the qt5 versions of lipstick installed To get lipstick running on wayland you will need to remove reference to xorg services/targets mcompositor ... add -platform eglfs to the lipstick.service Exec line add Environment=QT_QPA_PLATFORM=wayland to services that will now run under wayland

Community Workspace/Tegra3/Nexus7

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