[coreboot] coreboot on Thinkpad T420 : Ctrl and Fn key swap

Sacripan averti megabigfoutoir at gmail.com
Sun Sep 2 11:29:04 CEST 2018


thank you both, I successfuly modified the parameter using nvramtool.
Unfortunately I did not keep wires
attached to the laptop mainboard, so I will try to flash from the laptop or
wait a bit (so I can have soldering tools).

Flashtool advertises against using it directly from a laptop, do you know
if it can cause issues with the T420 ? Or if, were the bios bricked, I
could unbrick it by flashing again externally ?



On 9/1/18 11:20 PM, Angel Pons wrote:

Hello Mathias,

The prebuilt images are older than two years. My advice would be to build
coreboot from source, from either master or 4.8.1 (4.8 is broken). To use
the fn/ctrl swap, enabling "Use CMOS for configuration values" in Kconfig
is needed.

Note that using nvramtool as Evgeny stated should be possible with the old
image though.


Angel Pons

On 9/1/18 8:43 PM, Evgeny wrote:

There is a CMOS option called "fn_ctrl_swap", you can set it with nvramcui
payload or with nvramtool.
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