First time setting up
CMOS battery installation
The original X200/X201 CMOS battery is fully compatible with the X2100 motherboard. It’s installed next to the M.2 slot and should fit underneath the palmrest.
3K Panel BIOS settings
WARNING: Make sure the motherboard is unpowered when you install the panel and other peripherals. Please disconnect the power when you install any new hardware peripherals.
Adjusting this should help with panel glitches: BIOS > Advanced > CSM Settings and change video to UEFI.
Alternatively, turn off CSM if you intend to only use UEFI OS.
Voltage/Power Level adjustment
Check out this post for more info on performance and benchmarks.
PLEASE DO NOT EXCEED 30W-35W FOR PL1 AS THERE HAS BEEN REPORTS OF FRIED MOSFET DUE TO HIGH PL1
- BIOS > Advanced > Power & Performance > CPU – Power Management Control > Config TDP configuration
- Change TDP Boot mode > Up
- Scroll down to custom settings Up, adjust PL1 and PL2 and PL1 time window (Tau)
- BIOS > Advanced > Overclocking Performance Menu
- Change Overclock feature to enabled
- Processor > Core/Ring
- Change Voltage offset to the voltage you want (90 = 90mV)
- Change Offset Prefix to negative for undervolt
Charger & Battery
This section only applies to 10th gen X2100 machines with stock BIOS only.
The motherboard doesn’t appear to play well with 4-cell batteries and aftermarket batteries. Please only use fresh 6/9-cell batteries for this laptop.
The X2100 motherboard appears to draw a high current on boot and the recommended charging brick is a 90W brick. The machine appears to boot and charge fine on certain >60W chargers, including the stock Lenovo charger (both barrel and USB-C versions) provided the machine has a battery attached. There are some 65W chargers that don’t seem to charge properly on a high PL1. Please lower the PL1 of the CPU in the BIOS if the system don’t seem to charge properly.
4th batch X2100 Comet Lake BIOS
To update, install the driver with MEIsetup and run update.exe with administrator privilege on Windows. Turn off and unplug the machine for at least 1min before powering back on. MD5 is different from my website than from 51nb as I recompressed the files to save space.
I’ve uploaded the patched EC by jwise. It’s based on the latest 13 July 2020 BIOS. Only revert to previous BIOS if the latest BIOS does not seem to work properly for you. I’ve wrote about the EC updates here.
|Factory BIOS update||Direct link (MD5: 96ff06e072349f0|
|29 May 2020|
|Resolves charging issues|
Resolves sudden shutdown on battery
Battery can now be fully charged
|Direct link (MD5: 9d2fc278240c59|
|2 June 2020|
|Resolves sleep issue|
Resolves internal mic issue
|Direct link (MD5: b6179f2292e781|
|13 July 2020|
|Resolves SD card issues|
Resolves charging issues
|Direct link (MD5: 213ceb5b5a3cb|
|4 September 2020|
EC patched by jwise
|Hotpatching / EC debugging support|
Backlight table that allows backlight to go as low as 1%.
Correctly report battery state of charge on 9-cell and 4-cell batteries
Report power consumption from battery (“time remaining on battery”)
Fast charge 6-cell battery at 3A, and 9-cell battery at 4A. (X2100_V25 charged all batteries at 1.5A.)
Limit input power to 80W while charging battery. (X2100_V25 consumed up to 100W, which could cause trouble for 90W chargers.)
|Direct link (SHA256:|
|4 September 2020 EC patched by jwise||Exactly the same as the BIOS above|
CTRL and FN keys are swapped
|Direct link (SHA256: 39cabaad7aea4d47|
X210 Kaby Lake-R BIOS
To update, run update with administrator privilege on Windows. Turn off and unplug the machine for at least 1min before powering back on. MD5 is different from my website than from 51nb as I recompressed the files to save space.
|12 January 2019||Added SLIC2.1 to the BIOS from 3 July 2018|
Compatible with 2nd & 3rd batch X210
|Direct link (MD5: |
X2100 Motherboard Installation Guide
Coreboot has been ported to this machine by Matthew Garrett for 3rd batch and before X210 (8th gen Intel). It’s available here. In addition, a very helpful forum member vladisslav2011 has patched the embedded controller to fix a charging bug and both coreboot and the EC patch is compiled by harrykipper and available on his github repo here.
Windows and Linux should automatically initialise the latest drivers. If trackpoint does not operate properly after sleep on Windows, force install the X201 driver in device manager.