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T540p ⇒ missing wake up on lid open settings in BIOS

Posted: Sun Aug 02, 2015 12:01 pm
by 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!

Re: T540p ⇒ missing wake up on lid open settings in BIOS

Posted: Sun Aug 02, 2015 1:29 pm
by 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.