Yoga - Laptop
Note: Built initially for the Lenovo yoga 2 Pro. Works for some other
Lenovo Yoga laptops. Depends on which sensor chips are in the laptop.
Systems and information to make Lenovo Ideapad Yoga laptops work better.
Best tested for Yoga 2 Pro, but most of this works on other Ideapad Yogas.
Thinkpad Yogas may need modifications, and can't use ideapad-laptop.
These systems include kernel modules, so you have to have added
kernel-headers and kernel-devel to your system. For the orientation program
and sensor drivers you also need to have the IIO subsystem included in your
system. If you are running a kernel older than 3.13 you will very likely
have problems. If you are running a current kernel you should already have
the required drivers and a working ideapad-laptop module.
1/ orientation and light programs
The orientation program re-orients the screen so that the top of the
screen is physically up. The program needs the hid-sensor-accel-3d
sensor driver. See "docs/Orientation and rotation" for more information.
The light program adjusts the brightness of the screen in response to
changes in ambient brightness. The program needs the hid-sensor-als
sensor driver.
There is also a generic program that can be used to test sensors -
generic_buffer.
You need to have the libXrandr-devel and libnotify-dev package installed.
sudo apt-get install libxrandr-dev libnotify-dev
To compile and install:
make programs
sudo make programs-install
You may have to first install the sensor drivers, but only do this if
necessary because these drivers are old and might cause problems in newer
kernels.
To make the screen rotate you need to be running orientation. To make
the screen brightness change you need to be running light.
2/ yoga_laptop/ideapad-laptop.c
OBSOLETE, use with caution
Changes to this file should instead be made to the ideapad-laptop kernel
module in the Linux kernel.
NOT NEEDED in Fedora 20 or Fedora 19
Probably not needed in 3.16 or newer kernels
A patch to the ideapad-laptop kernel module to make Wifi work on the Yoga
2 Pro. The ideapad-laptop moodule also handles several ACPI-related keys
on the Yoga keyboard. A similar patch will be in 3.16, but one that
works for the Yoga Ideapad 1 and Yoga 2 11/13/Pro. This better patch has
been backported to Fedora 19 and Fedora 20 as of the end of June 2014.
To compile and install (warning - this installs a kernel module and may
break your system, and has to be done each time you install a new kernel,
after booting into the new kernel):
bash make ideapad-laptop
bash sudo make ideapad-laptop-install
The installation also sets up udev rules and an xmodmap file to handle
the touchpad_toggle and break keys that are not usually handled correctly.
Reboot your system to load the module
3/ sensor drivers
OBSOLETE, use with caution
Changes to these files should instead be made to the appropriate Linux
kernel modules
NOT NEEDED in 3.15 kernels or newer or Fedora 19 or newer
Patched 3.14 drivers for five of the sensors in the Yoga laptops. The
patch adds a quirk so that the hub initializes correctly. The quirk has
been added to 3.15 and 3.15 should have better drivers than the ones
here, so don't use these drivers with a 3.15 or newer kernel. The 3.15
drivers also have more quirks, perhaps even the right quirk for the
Thinkpad Yoga.
To compile and install (warning - this installs several kernel modules and
may break your system, and has to be done each time you install a new kernel,
after booting into the new kernel):
bash make sensors-drivers
bash sudo make sensors-drivers-install
Reboot your system to load the drivers
You need to have the libXrandr-devel package installed.