T540p ⇒ missing wake up on lid open settings in BIOS

[l0ki]

Hello!

i double checked every option in BIOS and haven't found anything that may turn off the wake-up if the lid is opened.

Am I missing something, or this is somehow controlled by OS/ACPI settings? I use Arch Linux if that matters.

Thanks!

[dr_st]

Welcome to the forum.

If it's anything like older Thinkpads, then:

1) It's supposed to be OS-controlled
2) It's supposed to mirror the lid close setting. If PC is set to sleep on lid close, it should wake up on lid open.
3) In practice, there may be bugs. For instance, my X220 often wakes up on lid open, even if it is set to do nothing on lid close.