# Lenovo ThinkPad X1 Yoga (Gen 3)

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Reason: Needs IDs in hardware table and improved function keys table (Discuss in Talk:Lenovo ThinkPad X1 Yoga (Gen 3)#)

Hardware | PCI/USB ID | Working?
--- | --- | ---
Touchpad |  | Yes
TrackPoint |  | Yes
Touchscreen |  | Yes
Pen | `056a:5146` | Yes
Keyboard |  | Yes
GPU |  | Yes
Webcam |  | Yes
Ethernet |  | Yes
Bluetooth |  | Yes
microSD-Card slot |  | Yes
Audio |  | Yes
Wireless |  | Yes
Mobile broadband |  | Yes
Fingerprint Reader | `06cb:009a` | Yes

Related articles

- Lenovo ThinkPad X1 Carbon (Gen 6)
- Lenovo ThinkPad X1 Yoga (Gen 4)
- Lenovo ThinkPad X1 Yoga (Gen 5)

## Firmware

Several linux users reported their systems were bricked after enabling "Thunderbolt BIOS assist" in the UEFI menu. Lenovo has released BIOS version 1.27 which prevents this issue. See this thread on the Lenovo forums for details.

Under BIOS version 1.24 the embedded controller will no longer spin the fan up properly during high system load causing CPU throttling issues. Reverting to version 1.21 will restore normal functions or you can use the ThinkFanAUR package to control it via the OS. See Fan speed control#ThinkPad laptops for details.

### Updates

In August of 2018 Lenovo has joined the Linux Vendor Firmware Service (LVFS) project, which enables firmware updates from within the OS. BIOS updates (and possibly other firmware such as the Thunderbolt controller) can be queried for and installed through fwupd.

#### Manual

Download the latest BIOS image from the Lenovo Thinkpad X1 Yoga 3rd Gen downloads page. Obtain geteltoritoAUR and run `geteltorito.pl -o bios-update.img xxxxxxxx.iso` on the downloaded ISO file to create a valid El Torito image file, then flash this file on a USB drive via `dd` like you would flash Arch installation media. For further information see flashing BIOS from Linux.

The ThinkPad X1 Yoga supports setting a custom splash image at the earliest boot stage (instead of the red "Lenovo" logo), more information can be found in the `README.TXT` located in the `FLASH` folder of the update image.

## Mobile broadband

Fibocom L850-GL works with https://github.com/xmm7360/xmm7360-usb-modeswitch

## Power management

To check whether S3 is recognized and usable by Linux, run:

     # dmesg | grep -i "acpi: (supports"

and check for `S3` in the list.

### Enabling S3 (with BIOS version 1.33 and after)

Since of May 17, 2019, Lenovo released firmware 1.33, which let you enable legacy S3 sleep in UEFI/BIOS. You can find the option in ThinkPad Setup: Config -> Power and disable the option "Optimized Sleep State for Modern Standby".

Optimized Sleep State for Modern Standby (after BIOS 1.35 the wording has changed to "Sleep State"):

- Disabled: "legacy" S3 sleep (after BIOS 1.35 the wording has changed to "Linux")
- Enabled: modern standby (after BIOS 1.35 the wording has changed to "Windows 10")

By setting this option to "Disabled", a warning will appear. The warning describes that a reinstallation of your OS might be mandatory. Accept the warning and both Windows and Linux should work fine. You can do this step even if you already installed a patch to enable s3 sleep. After disabling the optimized sleep state in the bios, and if you did the method to enable s3 sleep before the 1.33 bios update, it is best to remove `GRUB_EARLY_INITRD_LINUX_CUSTOM="/acpi_override"` in your /etc/default/grub (if you placed that there before), and regenerate the grub cfg using `sudo update-grub`. Do not forget to remove the acpi_override file as well.

Reboot and verify whether S3 is working by running:

     # dmesg | grep -i "acpi: (supports"

You should now see something like this:

     [    0.230796] ACPI: (supports S0 S3 S4 S5)

### Enabling S3 (before BIOS version 1.33)

There is an automated script called x1carbon2018s3 by fiji-flo that was originally intended for use for the X1 Carbon 6th Gen (source). The script and documentation were updated and maintained by lsmith77 to adapt it for the X1 Yoga 3rd Gen. The latest known version is in a fork by ryankhart currently awaiting a pull request. These scripts are recommended for debian-based distributions because of the script including debian-based bash commands.

(Optional) To check out this script and its history, visit these GitHub repositories:

- https://github.com/fiji-flo/x1carbon2018s3
  - https://github.com/lsmith77/x1carbon2018s3
    - https://github.com/ryankhart/x1carbon2018s3

#### Manual method

The manual method can be used in any distribution of Linux. Below is a modified version of the source instructions because some things are hard to understand.

1. Reboot, enter BIOS/UEFI. Go to Config - Thunderbolt (TM) 3 - set Thunderbolt BIOS Assist Mode to Enabled. Set also Security - Secure Boot to Disabled.

2. Install iasl (Intel's compiler/decompiler for ACPI machine language) and cpio. iasl in Ubuntu and possibly other distributions probably do not have the latest release for it to fully work. To make sure you have the latest version, download the source code and make install iasl. cpio can be installed normally with your distribution's package manager

3. Get a dump of ACPI DSDT table: `cat /sys/firmware/acpi/tables/DSDT > dsdt.aml`

4. Decompile the dump, which will generate a .dsl source based on the .aml ACPI machine language dump: `iasl -d dsdt.aml`

5. Download the [patch](https://kernel.dk/acpi.patch) and apply it against dsdt.dsl: `patch --verbose < acpi.patch`

Hunk 2 failed for me, I manually looked for the following in dsdt.dsl:

       Name (SS1, 0x00)
       Name (SS2, 0x00)
       Name (SS3, One)
       One
       Name (SS4, One)
       One

and replaced it with the following (removing the two "One" lines):

       Name (SS1, 0x00)
       Name (SS2, 0x00)
       Name (SS3, One)
       Name (SS4, One)

6. Recompile your patched version of the .dsl source: `iasl -ve -tc dsdt.dsl`

7. Create a CPIO archive with the correct structure, which GRUB can load on boot. We name the final image acpi_override and copy it into /boot/:

     mkdir -p kernel/firmware/acpi
     cp dsdt.aml kernel/firmware/acpi
     find kernel | cpio -H newc --create > acpi_override
     cp acpi_override /boot

8. GRUB needs to boot the kernel with a parameter setting the deep sleep state as default. Edit `/etc/default/grub` and add the following:

     GRUB_CMDLINE_LINUX_DEFAULT="mem_sleep_default=deep"
     GRUB_EARLY_INITRD_LINUX_CUSTOM="/boot/acpi_override"

9. Regenerate the GRUB configuration: `sudo update-grub`

If the second line of the previous step does not generate the grub to make the initrd lines look like "initrd /boot/acpi_override" in the beginning, then follow the next steps as normal. If it does generate those lines, skip to step 11

10. Tell GRUB to load the new DSDT table on boot in its configuration file usually located in `/boot/grub/grub.cfg`. Find the relevant GRUB menu entry and add the new image `/boot/acpi_override` to the initrd lines for the images that you want the s3 sleep to work in:

     Before:
     initrd /initramfs-4.17.4-200.fc28.x86_64.img

     After:
     initrd /boot/acpi_override /initramfs-4.17.4-200.fc28.x86_64.img

11. Reboot and enjoy having a laptop running Linux again... close the lid and the battery does not get drained in a few hours, also the battery no longer stays warm in sleep mode. To verify that things are working:

     # dmesg | grep ACPI | grep supports
     #[    0.195933] ACPI: (supports S0 S3 S4 S5)

      cat /sys/power/mem_sleep
     #s2idle [deep]

### Fix touchscreen after resume

These fixes were pulled from: Lenovo Linux Forums

#### Disabling Thunderbolt

Some users have reported that disabling Thunderbolt in BIOS -> Security -> IO ports -> Thunderbolt permanently fixes the touchscreen issue. As a consequence, docking stations may have some features disabled.

#### Using s2idle

Note: This method requires S3 to be enabled in a very specific way:

1. Select `Sleep State->Windows 10` in bios. This by default will enable s2idle.

    /sys/power/mem_sleep

    [s2idle] deep

2. To change default to S3 (`deep`), append `mem_sleep_default=deep` to the kernel boot line.

3. Reboot and make sure `deep` is default.

    /sys/power/mem_sleep

    s2idle [deep]

When S3 suspend is enabled, the touchscreen will not work upon resume from sleep.

The touchscreen functionality can be restored by freezing system (s2idle) after system comes out of suspend.

##### Method 1

1. Create a script to be called by systemd-sleep

    /usr/lib/systemd/system-sleep/wacom

    #!/bin/sh

    case "$1" in
        post)
            rtcwake -m freeze -s 1
            ;;
    esac

2. Make sure the executable permissions are set

    # chmod a+x /usr/lib/systemd/system-sleep/wacom

##### Method 2

1. Create a systemd system service file to force the system to enter `freeze` momentarily

    /etc/systemd/system/wake_wacom_hack.service

    [Unit]
    Description= s2idle for 1 second after resume
    After=suspend.target

    [Service]
    Type=oneshot
    ExecStart=/usr/sbin/rtcwake -m freeze -s 1

    [Install]
    WantedBy=suspend.target

2. Enable `wake_wacom_hack.service`.

##### Method 3

1. Install and enable acpi_call kernel module

2. Add the following SystemD service:

    /etc/systemd/system/activate-touch-hack.service

    [Unit]
    Description=Touch wake Thinkpad X1 Yoga 3rd gen hack
    After=suspend.target hibernate.target hybrid-sleep.target suspend-then-hibernate.target

    [Service]
    ExecStart=/bin/sh -c "echo '\\_SB.PCI0.LPCB.EC._Q2A'  > /proc/acpi/call"

    [Install]
    WantedBy=suspend.target hibernate.target hybrid-sleep.target suspend-then-hibernate.target

#### Other methods

Some users have reported this temporary fix: quickly close and open the lid to enable sleep, and use the power button to resume from sleep.

### Enabling S2idle

Note: Since kernel version 4.18 acpi.ec_no_wakeup=1 is set by default

From the Lenovo forums: Add the following kernel parameter to enable S2idle support:

     acpi.ec_no_wakeup=1

For example, for GRUB, one might edit `/etc/default/grub` and edit `GRUB_CMDLINE_LINUX_DEFAULT`:

     GRUB_CMDLINE_LINUX_DEFAULT="quiet acpi.ec_no_wakeup=1"

then perform

     # update-grub

and restart the system.

Note: This supports only S2idle state, not S0i3 state as some seem to have been led to believe!

The power consumption might still be higher than that of the S3 state in this case.

## Fingerprint reader

Install the python-validity-gitAUR package.

## Function keys

Key | Visible?1 | Marked?2 | Effect
--- | --- | --- | ---
`Fn` |  |  | `XF86WakeUp`
`Fn+F1` |  |  | `XF86AudioMute`
`Fn+F2` |  |  | `XF86AudioLowerVolume`
`Fn+F3` |  |  | `XF86AudioRaiseVolume`
`Fn+F4` |  |  | `XF86AudioMicMute`
`Fn+F5` |  |  | `XF86MonBrightnessDown`
`Fn+F6` |  |  | `XF86MonBrightnessUp`
`Fn+F7` |  |  | `XF86Display`
`Fn+F8` |  |  | `XF86WLAN`
`Fn+F9` |  |  | `XF86Tools`
`Fn+F10` |  |  | `XF86Bluetooth`
`Fn+F11` |  |  | Unknown
`Fn+F12` |  |  | `XF86Favorites`

1. The key is visible to `xev` and similar tools.
2. The physical key has a symbol on it, which describes its function.

## See also

- Product Specifications Reference (PSREF)
- Hardware maintenance manual
- User guide

Category:

- Lenovo

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