Lenovo ThinkPad X1 Carbon (Gen 7)

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.

If your thunderbolt port is unstable after upgrading with fwupd, you can visit the Lenovo ThinkPad X1 Carbon (Gen 7) driver website and upgrade the thunderbolt firmware manually.

Lenovo may in the future provide cabinet files that can be directly installed with fwupdmgr. Check for Linux files from the Lenovo ThinkPad X1 Carbon (Gen 7) driver website.

1. Make sure the AC adapter is firmly connected to the target computer.
2. Launch Terminal.
3. Move to the directory where the cabinet file was placed.
4. Run fwupdmgr install xxxxxxxx.cab to schedule firmware update.
5. Restart the system.
6. The computer will be restarted and the UEFI BIOS will be updated.

The BIOS has two "Sleep State" options, Windows and Linux, which you can find in at . The Linux option is the traditional S3 power state where all hardware components are turned off except for the RAM, and it should work normally. The Windows option is a newer software-based "modern standby" which works on Linux (despite the name). One possible benefit to the Windows sleep state is faster wake up time, and one possible drawback is increased power usage.

Mark Pearson, a Lenovo employee, recommends using the "Windows" sleep state option as it is better supported on modern Intel processors. The same is true for other modern Thinkpads except for AMD models (as of November 2020).

Occasionally your Thinkpad will wake up immediately after suspending with certain bluetooth devices added. To prevent this, remove the devices or disable bluetooth before suspending.

• . When disabled, on Linux, power usage appears to be significantly higher because of a substantial number of CPU wakeups during s2idle.

Due to a bug in a touchpad firmware, the touchpad might not work with following logs in dmesg:

[    4.499490] i2c_designware i2c_designware.1: i2c_dw_handle_tx_abort: lost arbitration
[...]
[   12.668795] i2c_hid i2c-SYNA8005:00: failed to set a report to device.
[   13.678765] i2c_designware i2c_designware.1: controller timed out

There are reports of the system freezing after initiating a suspend or hibernate. A temporary fix is to add to your kernel parameters. see . This temporary fix is somehow disable the microphone, use this at your own risk

A bug causes the CPU to consume less power than under Windows and throttle at 80°C instead of 97°.

Lenovo has confirmed the issue, explained the cause and published updates for the embedded controller and the BIOS to LVFS .

The alternative fix is to install , then start/enable .

If you are hearing clicking/cracking noises when using headphones, this command helped me. I have to run it after each restart.

# hda-verb /dev/snd/hwC0D0 0x1d SET_PIN_WIDGET_CONTROL 0x0

The newest alsa-ucm-conf is missing the speakers configuration. Downgrade it to 1.2.3-2.

# downgrade alsa-ucm-conf

On version 5.3 and newer the SOF firmware can be enabled, see Talk#Microphone.

Some models of this laptop include a second infrared (IR) webcam (originally to be used with Windows Hello) which is uncovered by the privacy slider. will show all available video devices. The IR emitter can be manipulated using chicony-ir-toggle.

Facial authentication can be archived using Howdy.