Built-in Keyboard Totally Messed Up After Dual Booting Fedora KDE — Even BIOS Keys Are Wrong (ThinkPad P52)

Hey everyone,
I’m stuck with a super weird issue that started after I dual-booted Fedora KDE alongside Windows on my ThinkPad P52.

Here’s what happened step-by-step:

While installing Fedora KDE, my laptop keyboard started glitching.

After installation, I deleted the Fedora partition and even wiped the EFI entries related to KDE.

Right after that, my keyboard completely stopped working — even inside BIOS.

I can’t press Enter to get into BIOS, but an external USB keyboard works perfectly.

I thought it was a Windows issue, so I:

Reinstalled keyboard drivers

Fresh installed Windows

Even wiped everything and reinstalled Fedora KDE again
→ But still, no luck — keyboard still not working properly.



Things I’ve already tried:

Hard reset (removed battery, held power button 40–60 seconds)

BIOS update (done twice successfully — currently up to date)

Full clean reinstall of Windows and Fedora

Still the same issue, even outside OS environments


Now the weird part:
In BIOS Hardware Diagnostics, key mapping is completely wrong —

Pressing K shows as Alt

Arrow up/down register as Home and End
So the keyboard is technically working, but the embedded controller (EC) mapping seems corrupted.


People online say “your EC firmware is messed up,” but I have no clue how to fix or reflash EC firmware safely on a ThinkPad P52.

I’m totally stuck — BIOS and EC both updated, but built-in keyboard is unusable.


---

Has anyone faced something like this before?

How can I fix a corrupted EC firmware or reset keyboard mapping on a ThinkPad?

Any Lenovo tools or EC reflashing utilities that could help?


Any help would be massively appreciated 🙏

Specs:

ThinkPad P52

Xeon CPU, Quadro P2000 GPU

16GB RAM

Windows 11 / Fedora KDE (tested both)

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