# cat /sys/firmware/acpi/platform_profile The currently active mode can be checked with the following command: These modes can also be selected automatically by using tlp and the PLATFORM_PROFILE_ON_AC/BAT configuration fields. The default mode is "balanced" however users can switch between these modes using the following keyboard shortcuts: These modes can result in over a 100% increase or decrease in CPU power draw. Lenovo supports 'platform-profiles' on newer kernels which can rather dramatically improve performance by decreasing throttling, or greatly improve battery life and thermals by lowering the CPU's power limit. To exclude it, modify the tlp configuration like: This laptop works nearly out of the box with tlp however, the WWAN chip currently has issues with runtime power management and will prevent booting if runtime-pm is enabled for the device. Attempting to put this chip in a 10th Gen laptop does not work as the "BIOS whitelist" only allows three chips listed above. See Lenovo ThinkPad X1 Carbon (Gen 9)#Mobile broadband for details of what that operation looks like, however that laptop had the benefit of having the Qualcomm based Foxconn SDX55 available which does have an FCC unlock operation available for it. There are promises from Lenovo staff that the tool for the L860 is being developed for release, however progress appears to be very slow and without updates. Although drivers exist for rest of them in the kernel, the FCC unlocking tool for them is not available.
The Fibocom L860, Fibocom FM350-GL, and Quectel EM05-CE WWAN chips are currently available for this laptop, and the Quectel EM05-CE is the only one that is operable out of the box on Linux. MIPI "Computer Vision" - does not work, see this thread on the Lenovo Forums.The Gen10 Carbon X1 can be configured with one of two webcam setups: The fingerprint reader works out of the box using fprintd. See Lenovo ThinkPad X1 Carbon (Gen 9)#Video Fingerprint reader
There can be issues with suspend/hibernate with the soundcard firmware that might cause the speakers and mic to not work or the computer to hang on wake. There currently is an open bug around the use of the 4-mic input array. the sof-firmware package needs to be installed) in order for the soundcard to work. Warning: Do not buy this laptop ( says even Lenovo) with a 2.8k OLED screen because the only webcam available with that screen is the MIPI camera (listed by Lenovo as 'Computer Vision camera') which does not have open source drivers and will just not work in the coming few years.
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