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# Lenovo ThinkPad Yoga 260

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Reason: Needs IDs in the hardware table and a function keys section added (Discuss in Talk:Lenovo ThinkPad Yoga 260)

Hardware | PCI/USB ID | Working?
--- | --- | ---
Touchpad |  | Yes
Touchscreen |  | Yes
Keyboard |  | Yes
Video |  | Yes
Webcam |  | Yes
Bluetooth |  | Yes
Card reader |  | Yes
Audio |  | Yes
Wireless |  | Yes
Accelerometer |  | Yes
Fingerprint reader |  | Yes
Smart card reader |  | Yes

## Installation

To access the boot menu and BIOS, use "F1". Disable secure boot from the BIOS.

## TrackPoint

Sometimes the TrackPoint stops working and dmesg reports a stream of garbage when it is touched. Removing and probing the kernel module solves the problem:

    # rmmod psmouse
    # modprobe psmouse

## Video

With default configuration, tearing is apparent when playing videos. DRI3 and glamor are supported. To solve tearing and use DRI3 and glamor, create the file `/etc/X11/xorg.conf.d/20-intel.conf` with the following content:

    Section "Device"
       Identifier  "Intel Graphics"
       Driver      "intel"
       Option      "AccelMethod"  "glamor"
       Option      "DRI"    "3"
       Option      "TearFree"    "true"
    EndSection

## Fingerprint reader

Works using https://github.com/3v1n0/libfprint. Bug tracker for fingerprint sensor: https://gitlab.freedesktop.org/libfprint/libfprint/issues/54

## Power management

If the device has unusually high CPU usage in idle then it might be an acpi firmware issue. On Windows this behaviour stops after a regular update. On Linux you can workaround by disabling whatever device is interrupting excessively.

Find the interrupting source:

    grep . -r /sys/firmware/acpi/interrupts

This might output something like this:

    ...
    /sys/firmware/acpi/interrupts/gpe34:   30289   enabled  <-- this causes many interrupts
    /sys/firmware/acpi/interrupts/gpe35:       3   enabled
    ...

Disable it (as root, not just sudo):

    echo "disable" > /sys/firmware/acpi/interrupts/gpe34

Now the CPU should idle at 0-2% usage.

Unfortunately you have to do that on every startup. A systemd service can do that automatically for you.

Create `/etc/systemd/system/disable-interrupts.service`:

    [Unit]
    Description=Disable acpi interrupts
    [Service]
    ExecStart=/usr/bin/bash -c 'echo "disable" > /sys/firmware/acpi/interrupts/gpe34'
    [Install]
    WantedBy=multi-user.target

Then enable the `disable-interrupts.service` systemd unit.

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