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iio-sensor-proxy

IIO sensors to D-Bus proxy

See https://developer.gnome.org/iio-sensor-proxy/1.0/ for developer information.

Installation

./configure --prefix=/usr --sysconfdir=/etc
make
make install

It requires libgudev and systemd.

Usage

With a GNOME 3.18 (or newer) based system, orientation changes will automatically be applied when rotating the panel, ambient light will be used to change the screen brightness, and Geoclue will be able to read the compass data to show the direction in Maps.

Note that a number of kernel bugs will prevent it from working correctly on some machines so please make sure to use the latest upstream kernel (kernel crashes on the Surface Pro, sensor failing to work after suspend on the Yoga Pro, etc.).

You can verify that sensors are detected by running udevadm info --export-db and checking for an output resembling this one:

P: /devices/platform/80860F41:04/i2c-12/i2c-BMA250E:00/iio:device0
N: iio:device0
E: DEVNAME=/dev/iio:device0
E: DEVPATH=/devices/platform/80860F41:04/i2c-12/i2c-BMA250E:00/iio:device0
E: DEVTYPE=iio_device
E: MAJOR=249
E: MINOR=0
E: SUBSYSTEM=iio
E: SYSTEMD_WANTS=iio-sensor-proxy.service
E: TAGS=:systemd:
E: USEC_INITIALIZED=7750292

You can now check whether a sensor is detected by running:

gdbus introspect --system --dest net.hadess.SensorProxy --object-path /net/hadess/SensorProxy

After that, use monitor-sensor to see changes in the ambient light sensor or the accelerometer. Note that compass changes are only available to GeoClue but if you need to ensure that GeoClue is getting correct data you can run: su -s /bin/sh geoclue -c monitor-sensor

If that doesn't work, please file an issue, make sure any running iio-sensor-proxy has been stopped: systemctl stop iio-sensor-proxy.service and attach the output of: G_MESSAGES_DEBUG=all /usr/sbin/iio-sensor-proxy running as root.

Tested on

  • Lenovo IdeaPad Yoga 13
  • Microsoft Surface Pro 2
  • Lenovo Yoga 2 Pro
  • Lenovo Yoga 2 13" and 11"
  • Lenovo Yoga 900
  • Onda v975w
  • Dell Venue 8 Pro
  • Dell Venue 11 Pro (7140)
  • Lenovo ThinkPad Twist
  • MacBook Pro (8.2)
  • Lenovo X1 Carbon 2014 (rev2)
  • MacBook Air (6,2)
  • MacBook Air (4,2)
  • Toshiba Portégé Z10t
  • Toshiba Radius 11 L10WC10C
  • Dell Inspiron 13 7000
  • Cube i9
  • HP Pavilion X360