Hi! Thanks for your helpful programs. I had an annoying issue where the permissions on the various files in /sys read by your program reverted every time I rebooted. I fixed it by throwing this file in /etc/udev/rules.d/.

Not sure if anyone else has run into this but I thought the rules might help someone.

Hi,
I cannot make accelerometer sensor to work (light and special key work perfectly).
I have Lenovo Yoga 2 pro.

lukas@lenprac:/tmp/yoga-laptop/docs$ uname -a
Linux lenprac 3.13.0-30-generic #54-Ubuntu SMP Mon Jun 9 22:45:01 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
lukas@lenprac:/tmp/yoga-laptop/docs$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04 LTS
Release: 14.04
Codename: trusty

This is the output of orientation --debug 4
iio device number being used is 0
iio trigger number being used is 0
Finding orientation 0
Polling the data

lukas@lenprac:~/tmp/yoga-laptop/sensors$ ./status
Sensor name: accel_3d
Channel /sys/bus/iio/devices/iio:device0/scan_elements/in_accel_x_en:t status: -1
Channel /sys/bus/iio/devices/iio:device0/scan_elements/in_accel_y_en:t status: -1
Channel /sys/bus/iio/devices/iio:device0/scan_elements/in_accel_z_en:t status: -1
Buffer status: 0
Buffer length: 128
Current trigger: accel_3d-dev0

lukas@lenprac:~/tmp/yoga-laptop/sensors$ ./status 1
Sensor name: gyro_3d
Channel /sys/bus/iio/devices/iio:device1/scan_elements/in_anglvel_x_en:t status: 0
Channel /sys/bus/iio/devices/iio:device1/scan_elements/in_anglvel_y_en:t status: 0
Channel /sys/bus/iio/devices/iio:device1/scan_elements/in_anglvel_z_en:t status: 0
Buffer status: 0
Buffer length: 2
Current trigger:

I install drivers from sensors/drivers by sudo make install.
Then in sensors directory install and set permissions.

Script unstick 0 does not help.

Is anything what I forget? .. or is something what I can try further?

Hey,
how's progress on other sensors going? Any updates?

I have just upgraded to latest stable kernel (3.14.2), but there is still no official support for the remaining four sensors.

I'm new to all this, so be gentle ;)
Thanks for writing these patches to get the lenovo 2 pro laptops play nicely with linux!

2 Issues:

Is it possible the documentation in /yoga-laptop/yoga-laptop/README is outdated? It reads

Then to load the module itself
  sudo insmod ./ideapad_laptop.ko 

But the .ko file seems to have been removed since.

Then, for /yoga-laptop/sensors:
As soon as I run ./setup, the terminal says

./setup: 5: ./setup: Bad substitution

I'm running ubuntu 13.10 with gnome 3.10.

Hey pfps.

I am almost certain I found a small error in your orientation.c code that prevents the auto rotation:

406 if (previous_orientation == orientation /* only rotate when stable */ && orientation !=
407 screen_orientation && orientation != FLAT && !orientation_lock) {
408 rotate_to(orientation);
409 previous_orientation = orientation;
410
411 }

In line 406 the dependencies to execute the rotate_to - section are defined as

if (previous_orientation == orientation /* only rotate when stable */ &&
orientation != screen_orientation && orientation != FLAT && !orientation_lock)

If I understand it correct, the value of previous_orientation is defined as "-1" in the header section and gets a new value at two positions:

1. after the dependencies above are met and rotate_to sequence is executed (Line 409) it gets the same value as orientation,
2. during the sigusr_callback_handler sequence (Line 225) it gets the same value as screen_orientation.

BUT, here comes the clue: screen_orientation also only gets his value in the rotate_to sequence.
But that prevents the section from actually running because the algorithms to set the values to fulfil the dependencies are only executed AFTER the dependencies are fulfilled.
It SHOULD (imo) set the value of previous_orientation after each time the check orientation process is finished.

So.. long story short: I think the previous_orientation=orientation command should be taken out of the sequence above and placed as a dependencie-free command behind the rest

Something like this:
406 if (previous_orientation == orientation /* only rotate when stable */ && orientation !=
407 screen_orientation && orientation != FLAT && !orientation_lock) {
408 rotate_to(orientation);
409
410 }
411 previous_orientation = orientation;

I tried it with this code and if "run sequence once" - write previous_orientation at the end after all other commands - "run sequence again" - previous_orientation=orientation at the beginning - Hurray!

Greetings

Felix

I successfully made the orientation work with my Atmel touch panel (by replacing "ELAN Touchscreen" with "Atmel maXtouch ...") but I have also a Wacom digitizer, if I replace Elan with wacom's name it works too. Is there a way to add two input devices to the orientation?

Irrelevant - please delete

Hi !

Here is the result I get :

christophe@Lenovo-Yoga-2-Pro:~/Apps/yoga-laptop$ make sensors-drivers
cd sensors/drivers && make default
make[1]: Entering directory '/home/christophe/Apps/yoga-laptop/sensors/drivers'
make -C /usr/src/linux-headers-3.16.0-30-generic SUBDIRS=/home/christophe/Apps/yoga-laptop/sensors/drivers modules
make[2]: Entering directory '/usr/src/linux-headers-3.16.0-30-generic'
CC [M] /home/christophe/Apps/yoga-laptop/sensors/drivers/hid-sensor-trigger.o
/home/christophe/Apps/yoga-laptop/sensors/drivers/hid-sensor-trigger.c: In function ‘hid_sensor_data_rdy_trigger_set_state’:
/home/christophe/Apps/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:56:17: error: incompatible types when assigning to type ‘atomic_t’ from type ‘bool’
st->data_ready = state;
^
scripts/Makefile.build:263: recipe for target '/home/christophe/Apps/yoga-laptop/sensors/drivers/hid-sensor-trigger.o' failed
make[3]: *** [/home/christophe/Apps/yoga-laptop/sensors/drivers/hid-sensor-trigger.o] Error 1
Makefile:1345: recipe for target 'module/home/christophe/Apps/yoga-laptop/sensors/drivers' failed
make[2]: *** [module/home/christophe/Apps/yoga-laptop/sensors/drivers] Error 2
make[2]: Leaving directory '/usr/src/linux-headers-3.16.0-30-generic'
Makefile:22: recipe for target 'default' failed
make[1]: *** [default] Error 2
make[1]: Leaving directory '/home/christophe/Apps/yoga-laptop/sensors/drivers'
Makefile:15: recipe for target 'sensors-drivers' failed
make: *** [sensors-drivers] Error 2

Any idea what I'm doing wrong ?

First of all, thanks for your amazing work. I have been testing the light sensor, and it works fantastic in general, but I have noticed, that in low light conditions, the sensor is somewhat unstable and the backlight changes constantly, making it uncomfortable. Maybe a debounce algorythm can be implemented to prevent this? Thanks!

I'm new to github and making programs in Linux, so could someone please tell me what I need to do, in order to make this work, or where I can read about it? I downloaded the files, what then? Thank you.

Hi,

I don't know if you saw the recent libiio project.
I have not looked in detail, but do you think it would be useful to use that to talk to the sensors? Maybe this could help with the strange behavior of the Thinkpad Yoga sensors raised in #4?

Did both

cd yoga_laptop
sudo make install-keys

and

make programs && sudo make programs-install

But it changes nothing. (Fn+F6 still not working; screen not rotating etc.)

At the end of the README file you write, concerning the orientation and light sensor programs:

To compile and install (after first compiling and installing the sensor drivers if necessary): make programs sudo make programs-install

which I cannot get to work. Could you provide more detailed instructions please?

Many thanks.

Hello! I tried to compile sensors drivers and got errors:

$ cd sensors/drivers/
$ make
make -C /lib/modules/3.13.4-1.g6eda950-desktop/build SUBDIRS=/home/konst/test/yoga-laptop/sensors/drivers modules
make[1]: Entering directory `/usr/src/linux-3.13.4-1.g6eda950-obj/x86_64/desktop'
  CC [M]  /home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.o
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c: In function 'hid_sensor_data_rdy_trigger_set_state':
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:34:9: error: implicit declaration of function 'iio_trigger_get_drvdata' [-Werror=implicit-function-declaration]
  struct hid_sensor_common *st = iio_trigger_get_drvdata(trig);
         ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:34:33: warning: initialization makes pointer from integer without a cast [enabled by default]
  struct hid_sensor_common *st = iio_trigger_get_drvdata(trig);
                                 ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c: In function 'hid_sensor_remove_trigger':
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:70:2: error: implicit declaration of function 'iio_trigger_unregister' [-Werror=implicit-function-declaration]
  iio_trigger_unregister(attrb->trigger);
  ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:71:2: error: implicit declaration of function 'iio_trigger_free' [-Werror=implicit-function-declaration]
  iio_trigger_free(attrb->trigger);
  ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c: At top level:
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:75:21: error: variable 'hid_sensor_trigger_ops' has initializer but incomplete type
 static const struct iio_trigger_ops hid_sensor_trigger_ops = {
                     ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:76:2: error: unknown field 'owner' specified in initializer
  .owner = THIS_MODULE,
  ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:76:2: warning: excess elements in struct initializer [enabled by default]
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:76:2: warning: (near initialization for 'hid_sensor_trigger_ops') [enabled by default]
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:77:2: error: unknown field 'set_trigger_state' specified in initializer
  .set_trigger_state = &hid_sensor_data_rdy_trigger_set_state,
  ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:77:2: warning: excess elements in struct initializer [enabled by default]
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:77:2: warning: (near initialization for 'hid_sensor_trigger_ops') [enabled by default]
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c: In function 'hid_sensor_setup_trigger':
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:86:2: error: implicit declaration of function 'iio_trigger_alloc' [-Werror=implicit-function-declaration]
  trig = iio_trigger_alloc("%s-dev%d", name, indio_dev->id);
  ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:86:7: warning: assignment makes pointer from integer without a cast [enabled by default]
  trig = iio_trigger_alloc("%s-dev%d", name, indio_dev->id);
       ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:93:6: error: dereferencing pointer to incomplete type
  trig->dev.parent = indio_dev->dev.parent;
      ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:94:2: error: implicit declaration of function 'iio_trigger_set_drvdata' [-Werror=implicit-function-declaration]
  iio_trigger_set_drvdata(trig, attrb);
  ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:95:6: error: dereferencing pointer to incomplete type
  trig->ops = &hid_sensor_trigger_ops;
      ^
/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.c:96:2: error: implicit declaration of function 'iio_trigger_register' [-Werror=implicit-function-declaration]
  ret = iio_trigger_register(trig);
  ^
cc1: some warnings being treated as errors
make[4]: *** [/home/konst/test/yoga-laptop/sensors/drivers/hid-sensor-trigger.o] Error 1
make[3]: *** [_module_/home/konst/test/yoga-laptop/sensors/drivers] Error 2
make[2]: *** [sub-make] Error 2
make[1]: *** [all] Error 2
make[1]: Leaving directory `/usr/src/linux-3.13.4-1.g6eda950-obj/x86_64/desktop'
make: *** [default] Error 2

What could be the problem?

More of a feature request than an issue: Would it be possible to compile with dbus hooks so that dbus-notify can be called upon rotation?
This could track orientation, or 'mode' as per Windows usage (Tablet, tent, stand, laptop)

I've got my Yoga 2 Pro mostly running the way I want, I'm primarily just trying to figure out how to get the auto-rotation in place.

I've tried cloning this repo and running make programs as advised in the docs. I'm getting the following output:

cd sensors && make all
make[1]: Entering directory `/home/dehuszar/Downloads/yoga-laptop/sensors'
cc orientation.c -o orientation
In file included from orientation.c:29:0:
libs/common.h:32:35: fatal error: X11/extensions/Xrandr.h: No such file or directory
 #include <X11/extensions/Xrandr.h>
                                   ^
compilation terminated.
make[1]: *** [orientation] Error 1
make[1]: Leaving directory `/home/dehuszar/Downloads/yoga-laptop/sensors'
make: *** [programs] Error 2

I did a sudo find / -iname for the Xrandr.h file, but there were no hits, so I'm not sure what my next steps should be. The docs made it sound like I wouldn't have to compile the drivers as the 3.15+ kernel should have them. Perhaps there are other dependencies I need to address? If I'm misunderstanding, let me know.

Thanks in advance.

Hello,

Every time I start the orientation program a driver crashes and the devices under /sys/bus/iio/devices/iio disappear.
I cannot start the orientation program again until I reboot.
Will this be fixed if I install the drivers from this git instead of using the ones in the kernel?
If so which module should I block from loading?

Thanks

I didn't use this repository yet, because I don't need auto rotation, I use a script to rotate with a keyboard shortcut if I need it: https://gist.github.com/rubo77/daa262e0229f6e398766

maybe this would be an option for this repo too

I have had the orientation and sensors working pretty well in Ubuntu 14.04, but upon the upgrade to 14.10, I've been experiencing screen tearing when flipping into tent mode directly from the default orientation.

If I rotate to the vertical orientation first and then go upside-down, then it seems to transition smoothly, but from default to upside-down orientation causes the viewport to show inverted duplications of the bottom half of the screen and duplicate cursors for each orientation.

I've tried both with just the compiled orientation program and also with the compiled ideapad-laptop module, just to make sure I wasn't seeing the issue because the orientation program was expecting something to be in place. The sensors program won't compile (and the docs advise against using it), but the default 3.16 sensors drivers seem to be otherwise working okay.

I've attached a screenshot so you can see what I mean.

Thanks in advance,
Sam

At the moment Ubuntu 14.04 is running on kernel 3.14.1-031401 and everything seems to run fine after following my instruction guide: http://askubuntu.com/questions/367963/ubuntu-on-lenovo-yoga-2-pro/485632#485632

All Keyboard keys are already working and there is no issue with the brightness controll.

The only problem left is, that my wireless card sometimes dies: http://askubuntu.com/questions/517463/wireless-card-unstable-on-lenovo-yoga-2-pro

Are there any enhancements, that are not already implemented in Ubuntu 14.04?

make
cd sensors && make all
make[1]: Entering directory '/home/tom/yoga-laptop/sensors'
cc orientation.c  -o orientation
^[[Aorientation.c:32:30: fatal error: libnotify/notify.h: No such file or directory 
compilation terminated.
Makefile:16: recipe for target 'orientation' failed
make[1]: *** [orientation] Error 1

Any ideas?

Many thanks,
Tom

Using generic_buffer -c 10 -n als will only output one result at a time when executing cat on in_intensity_both_raw. Same for generic_buffer -c 10 -n gyro3d. No matter how I am tilting my device I allways get the same values back. "lsusb" is not giving me any device with Id 2047:0855. Also I can't find a device with iManufacturer Invensense or iInterface HID Sensor
Interface.

I noticed this message repeating continually in my syslog:

Oct 15 01:33:38 ideapad-yoga13 kernel: [ 781.539719] atkbd serio0: Use 'setkeycodes e03e ' to make it known.

I also noticed that the message stops when the yoga is in tablet mode, and resumes when in laptop mode. Is there a way to use this keycode to trigger a touchpad enable/disable automatically?

Hi,

i played with your stuff around and couldn't get it to work. Orientation script is running but it's not updating data when I move the Yoga 3 Pro around.

Kernel:

cat /proc/version
Linux version 3.16.0-30-generic (buildd@komainu) (gcc version 4.9.1 (Ubuntu 4.9.1-16ubuntu6) ) #40-Ubuntu SMP Mon Jan 12 22:06:37 UTC 2015

Derivate:

cat /etc/issue
Ubuntu 14.10 \n \l

Seems like I do not need to use your ideapad_laptop drivers. Otherwise wlan will break on my system, too.

./orientation --touchscreen='ATML1000:00 03EB:8A10' --usleep=2000000 --count=20 --debug=4
iio device number being used is 3
iio trigger number being used is 3
Finding orientation 0
Polling the data
Reading the data
Read the data
Orientation 1, x:  -19, y: -820, z: -601
Orientation 1, x:  -19, y: -820, z: -601
Orientation 1, x:  -19, y: -820, z: -601
Orientation 1, x:  -19, y: -820, z: -601
Found orientation: or:1, prev:-1, scr:-1, 0
Orientation at 0.0 is normal

The orientation number are not updating, even if i wait for a longer period of time. Any ideas?

Have you considered implementing onboard when the device is in flat or inverted orientation? I've looked into it myself but didn't want to repeat the work if this was something you had already investigated.

Thanks

When I run your program (or I even tried to build my own minimalistic program which behaves the same way", then it is stuck in the poll() command. It get's out of it when I manually cat in the sysfs the raw data file in_..._raw. Afterwards the sensor outputs the correct sensor data etc.

It is not a permissions problem (I checked that).

Do you have an idea what else could have caused the problem?

I am using Lenovo ThinkPad Twist S230u with Ubuntu 14.10 (Kernel 3.16).

Hi! I was curious if you'd have any advice on implementing this on a Yoga 11s.
I don't have much experience working with kernel modules but I bet there probably aren't too many modifications needed to get it working on such similar hardware to the Yoga 13, and it'll be good fun to learn a bit more about managing hardware configuration.

The orientation functionality stops working after suspend. I use this crude script as a workaround on Ubuntu 15.10:

/etc/pm/sleep.d/restart_orientation

#!/bin/bash 
case "$1" in
    hibernate|suspend)
         killall orientation &
         ;;
    thaw|resume)
         sleep 30
         nohup /usr/bin/orientation > /dev/null &
         ;;
esac

How do I uninstall or remove the changes made by idea-laptop-install?

Hi,

It seems that a curly brace was dropped in rotate condition l:411.

Regards,

So I went through the readme and installed all the missing depencies. I have kernel 3.16.0-38.
I'm not sure if I am doing it correctly though, I pulled the git. Extracted the tar.

Not sure if it ran already or not, but when I run "make programs sudo make programs-install"
I get

john@john-Lenovo-Yoga-2-Pro:~/yoga-laptop$ make programs sudo make programs-install
cd sensors && make all
make[1]: Entering directory /home/john/yoga-laptop/sensors' make[1]: Nothing to be done forall'.
make[1]: Leaving directory /home/john/yoga-laptop/sensors' make: *** No rule to make targetsudo'. Stop.

Am I missing anything? Or did it run already?

Hi,
I wanted to know if you found a way to set the sensors in the mode (has you say in Orientation and rotation) :
"2/ active with hysteresis - data is produced only after a significant change
3/ active with change - data is produced after any change"
Cheers,
thanks you.

According to README, since I am running newer kernel than 3.16 I should only type make programs?
When doing so, I am getting linking error:

$ make programs
cd sensors && make all
make[1]: Entering directory '/home/me/yoga-laptop/sensors'
cc generic_buffer.c  -o generic_buffer
/tmp/ccpVnbqv.o: dans la fonction « main »:
generic_buffer.c:(.text+0x139a): référence indéfinie vers « build_channel_array »
collect2: error: ld returned 1 exit status
Makefile:13: recipe for target 'generic_buffer' failed
make[1]: *** [generic_buffer] Error 1
make[1]: Leaving directory '/home/me/yoga-laptop/sensors'
Makefile:9: recipe for target 'programs' failed
make: *** [programs] Error 2

produit@yoga$ uname -a
Linux yoga 3.13.0-30-generic #54-Ubuntu SMP Mon Jun 9 22:45:01 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

/home/produit/yoga-laptop/sensors/drivers/hid-sensor-orient.c: In function ‘hid_sensor_probe’:
/home/produit/yoga-laptop/sensors/drivers/hid-sensor-orient.c:329:9: warning: passing argument 1 of ‘hid_sensor_remove_trigger’ from incompatible pointer type [enabled by default]
hid_sensor_remove_trigger(indio_dev);
^
In file included from /home/produit/yoga-laptop/sensors/drivers/hid-sensor-orient.c:31:0:
/home/produit/yoga-laptop/sensors/drivers/./hid-sensor-trigger.h:24:6: note: expected ‘struct hid_sensor_common *’ but argument is of type ‘struct iio_dev *’
void hid_sensor_remove_trigger(struct hid_sensor_common *attrb);
^

Those are just warning, it does compile.
I have seen this code run with some kernels. But not under ubuntu 14.04.
PErhaps it is realted to this warning?

Thanks

You mention a script to reduce battery power consumption here:
http://askubuntu.com/questions/367963/ubuntu-on-lenovo-yoga-2-pro/389190#389190

Is this still needed?

I try to write a full guide here how to install Ubuntu on a Yoga 2 Pro. Should I add your scripts there?
http://askubuntu.com/questions/367963/ubuntu-on-lenovo-yoga-2-pro/485632#485632

After installing these drivers, my accelerometer no longer works at all, neither on Linux (this is using Ubuntu 14.04 with the stock 3.13 Kernel) nor on Windows. How can I get it working again?

Everything is great about the rotation the only thing missing is detecting whether the screen degree has passed 180 to disable keyboard and touchpad and going to the tablet mode.

Hi, I was trying to test this in a Yoga 2 device with the 3.19 kernel (I'm using Manjaro). How does the orientation script is supposed to work? When I execute it (after running make) I get this

$ sudo ./orientation 
iio device number being used is 0
iio trigger number being used is 0
Orientation 1, x:    7, y: -992, z:    7
Orientation 1, x:    7, y: -992, z:    7
Orientation at 0.0 is normal
Orientation 1, x:    7, y: -992, z:    7
Orientation 1, x:    7, y: -992, z:    7
Orientation at 1.0 is normal
ROTATE to normal
unable to find device ELAN Touchscreen
Second child (xinput) returned 256 
Orientation 1, x:    7, y: -992, z:    7
Orientation 1, x:    7, y: -992, z:    7
Orientation at 2.0 is normal
Orientation 1, x:    7, y: -992, z:    7
Orientation 1, x:    7, y: -992, z:    7
Orientation at 3.0 is normal
...

But nothing changes if I rotate my screen. I didn't install the drivers since I'm using a new kernel, or should I?

Regards

Running the software on Lenovo Yoga 2 Pro, with Manjaro KDE 16.10 installed, Kernel 4.8.5, KDE Plasma 5.8.3, KDE Frameworks 5.27 QT 5.7

Rotation works great.

Touchpad is not being disabled.

I'm using libinput as touchpad (and touchscreen) driver - which is the new default for most distros.

Could that be relevant?

When I attempt to run ./setup.sh for senors, I get the following error:

unable to find device ELAN Touchscreen

Hi,

With kernel 4.10 the Yoga 460 work fine with the light and orientation tools.

You may want to add it to the documentation.

Thank you for you work :)

I've cloned from git master, also linux headers are installed.

I get follow exception

x@1 /x/yoga-laptop (git)-[master] % make ideapad-laptop
cd yoga_laptop && make default
make[1]: Entering directory '/x/yoga-laptop/yoga_laptop'
NOTE: You need to have the kernel-devel package installed
echo /usr/src/linux-headers-4.2.0-18-generic
/usr/src/linux-headers-4.2.0-18-generic
make -C /usr/src/linux-headers-4.2.0-18-generic SUBDIRS=/x/yoga-laptop/yoga_laptop modules
make[2]: Entering directory '/usr/src/linux-headers-4.2.0-18-generic'
  CC [M]  /x/yoga-laptop/yoga_laptop/ideapad-laptop.o
/x/yoga-laptop/yoga_laptop/ideapad-laptop.c: In function ‘ideapad_acpi_add’:
/x/yoga-laptop/yoga_laptop/ideapad-laptop.c:920:7: error: implicit declaration of function ‘acpi_video_backlight_support’ [-Werror=implicit-function-declaration]
  if (!acpi_video_backlight_support()) {
       ^
cc1: some warnings being treated as errors
scripts/Makefile.build:264: recipe for target '/x/yoga-laptop/yoga_laptop/ideapad-laptop.o' failed
make[3]: *** [/x/yoga-laptop/yoga_laptop/ideapad-laptop.o] Error 1

Makefile:1398: recipe for target '_module_/x/yoga-laptop/yoga_laptop' failed
make[2]: *** [_module_/x/yoga-laptop/yoga_laptop] Error 2
make[2]: Leaving directory '/usr/src/linux-headers-4.2.0-18-generic'
Makefile:24: recipe for target 'default' failed
make[1]: *** [default] Error 2
make[1]: Leaving directory '/x/yoga-laptop/yoga_laptop'
Makefile:21: recipe for target 'ideapad-laptop' failed
make: *** [ideapad-laptop] Error 2

pls I need a hint

Hi,

I have a Thinkpad Yoga laptop, and I am trying to make the sensors work, with no luck so far.
I am using Ubuntu 14.04 with kernel 3.13.0-18-generic on AMD64, and I managed to compile the drivers you provided (the Makefile needs to be adapted though as for the Fedora case).
I blacklisted the original modules and inserted yours instead as in the README, then ran setup (the first line has to be changed to #!/bin/bash, since you use bashisms and on Debian derivatives, sh != bash).

This is the output of orientation --debug 4

iio device number being used is 0
iio trigger number being used is 0
Finding orientation 0
Polling the data

and of sudo ls -R /sys/bus/iio/devices/iio:device0

/sys/bus/iio/devices/iio:device0:
buffer           in_accel_offset          name       subsystem
dev          in_accel_sampling_frequency  power      trigger
in_accel_hysteresis  in_accel_scale       scan_elements  uevent

/sys/bus/iio/devices/iio:device0/buffer:
enable  length

/sys/bus/iio/devices/iio:device0/power:
async             runtime_active_kids  runtime_status
autosuspend_delay_ms  runtime_active_time  runtime_suspended_time
control           runtime_enabled      runtime_usage

/sys/bus/iio/devices/iio:device0/scan_elements:
in_accel_x_en     in_accel_y_en     in_accel_z_en
in_accel_x_index  in_accel_y_index  in_accel_z_index
in_accel_x_type   in_accel_y_type   in_accel_z_type

/sys/bus/iio/devices/iio:device0/trigger:
current_trigger

Please tell me if you need more informaton.

No wifi on a Yoga 3 14 as it also has no hardware kill switch.