Lenovo ThinkPad X1 Nano
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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, for example /etc/systemd/system/wakeup-bug.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 firmware in order for the sound card to work. See Advanced Linux Sound Architecture#ALSA firmware.
Fan control
If you are suffering from overheating or you just want more control you can setup Fan speed control#ThinkPad laptops