Lenovo ThinkPad X1 Yoga (Gen 3)

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.

Download the latest BIOS image from the Lenovo Thinkpad X1 Yoga 3rd Gen downloads page. Obtain and run on the downloaded ISO file to create a valid El Torito image file, then flash this file on a USB drive via 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 located in the folder of the update image.

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

# 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)

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

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:

4. Decompile the dump, which will generate a .dsl source based on the .aml ACPI machine language dump:

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

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:

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 and add the following:

9. Regenerate the GRUB configuration:

# 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 . Find the relevant GRUB menu entry and add the new image 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]

The X1Y3 has a firmware bug where the touchscreen may not come up again after waking up from S3 suspend/resume.

The following fixes were pulled from: Lenovo Linux Forums

This method is preferable because it does not require disabling functionality of the laptop or tinkering with the power management, such as replacing S3 power management by something else such as s2idle.

1. Install and enable the kernel module.

2. Add the following systemd service:

3. Enable .

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.

When S3 suspend is enabled, the touchscreen will not work upon resume from sleep. The touchscreen functionality can be restored by freezing the system (s2idle) after system comes out of suspend.

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

2. Make sure it is executable

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

2. Enable .

Some users have reported one or two of these temporary fixes to work for them:

• Quickly close and open the lid to enable sleep.
• Use the power button (instead of/before opening the lid) to resume from sleep.

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 and edit :

 GRUB_CMDLINE_LINUX_DEFAULT="quiet acpi.ec_no_wakeup=1"

then perform

 # update-grub

and restart the system.

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