Lenovo ThinkPad X1 Nano

Power management

At least with all current maintained kernel (< 5.13) the laptop will fail to resume after suspension. A workaround is to disable the wake-up for the WAN modem:

# echo 'RP01      S4    *disabled   pci:0000:00:1c.0' >> /proc/acpi/wakeup

To execute at every start you can add a systemd service:

/etc/systemd/system/wakeup-bug.service

[Unit]
Description=something

[Service]
ExecStart=/bin/bash -c "echo 'RP01      S4    *disabled   pci:0000:00:1c.0' >> /proc/acpi/wakeup"

[Install]
WantedBy=multi-user.target

Audio

This laptop requires Sound Open Firmware in order for the soundcard to work.

On the headphone jack, a buzz/noise might be audible that even changes with different cpu usage. The fix is to install the alsa-tools package and then run

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

To execute at every start you can add a systemd service:

/etc/systemd/system/hdaverb.service

[Unit]
Description=Thinkpad X1 Nano: Fix crackly audio with headphones
After=sys-devices-pci0000:00-0000:00:1f.3-skl_hda_dsp_generic-sound-card0-controlC0.device
Requires=sys-devices-pci0000:00-0000:00:1f.3-skl_hda_dsp_generic-sound-card0-controlC0.device

[Service]
Type=oneshot
ExecStart=/usr/bin/hda-verb /dev/snd/hwC0D0 0x1d SET_PIN_WIDGET_CONTROL 0x0

[Install]
WantedBy=multi-user.target

Fan control

If you are suffering from overheating or you just want more control you can setup Fan speed control#ThinkPad laptops

Fingerprint reader

The fingerprint reader works out of the box using fprintd. See Fprint.