Windows 10: Physical power button doesn't work

About two months ago, the physical power button on my Lenovo X1 Tablet (3rd gen) stopped working. It won't put the machine to sleep nor will it wake it up from sleep. I've applied all updates from Lenovo and from Microsoft. I double checked the desired behavior in power settings and it's set to have ALL buttons (I only have one, but hey) to put the machine to sleep.


I've created a filter for anything related to power in the event viewer but no matter what I do, I can't find any errors from drivers or similar.


The button works though. If the machine is off (as in completely powered down) it will power on the tablet. I've also booted into Knoppix (a Linux live DVD) and within linux, the button works just fine, a short press triggers a shutdown dialog.


So obviously it's not a hardware issue, it's a software issue. It's as if windows doesn't know to listen to the button, since it won't even use it as a wakeup source.


Some stats about the machine:

OS Name Microsoft Windows 10 Pro
Version 10.0.17134 Build 17134
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Manufacturer LENOVO
System Model 20KJCTO1WW
System Type x64-based PC
System SKU LENOVO_MT_20KJ_BU_Think_FM_ThinkPad X1 Tablet Gen 3
Processor Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz, 2112 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date LENOVO N1ZET70W(1.26 ), 9/18/2018

I'd rather not try reinstalling the machine if I can avoid it, so let me know if you need more details

:)

 

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