[ltp] ThinkPad X1E4 and P1G5 losing keystrokes under Linux

[Thilo-Alexander Ginkel]

Hi there,

I have been using a ThinkPad X1 Extreme Edition Gen 4 and later a P1
Gen 5 since late 2021. One issue that is driving me nuts is that under
certain (yet unknown) conditions the ThinkPad seems to be sporadically
losing keystrokes when running Linux. I reported the issue to Lenovo a
long time ago, but no solution is in sight.

Has anyone also observed this behavior with a modern ThinkPad? To be
able to measure the issue I crafted a little Python script that
measures the interval between (monotonic) keystrokes and can thus
pretty easily detect when keystrokes are lost:
https://github.com/ginkel/thinkfail

I am also seeing the issue when booting my Laptop from a Kubuntu 22.04
Live USB image, so I'd rule out any specifics related to my personal
setup/configuration.

Any input is much appreciated!

Thanks,
Thilo