ThinkPad P15s Gen 1, NM-C931 REV 1.0 touch screen replaced only works in UEFI menu

[Yehuda170]

original screen was BOE NV156FHM-T07 with On-Cell Touch screen I²C

replaced with what was in my stock, which is IVO R156NWF7 R2 which is also with On-Cell Touch screen I²C

now touch screen works perfectly in UEFI BIOS menu & boot menu. but not working in OS, tried windows & linux too

with original broken screen i can see in device manager touch screen in human interfaces

but with the new screen it's not showing in device manager

is it lenovo blocking it? is it driver missing?

I²C is a headache

[mon2]

Re: ThinkPad P15s Gen 1, NM-C931 REV 1.0 touch screen replaced only works in UEFI men

Check if you have a secure boot option in your bios. If yes, disable it and boot again.

This setting, if ON, will prevent new hardware from being enumerated.

[Yehuda170]

Re: ThinkPad P15s Gen 1, NM-C931 REV 1.0 touch screen replaced only works in UEFI men

disabled secure boot, didn't helped

touch only works in bios menu

[mon2]

Re: ThinkPad P15s Gen 1, NM-C931 REV 1.0 touch screen replaced only works in UEFI men

See if this helps:

https://pcsupport.lenovo.com/us/en/p...ror-windows-10