T480s resumes from sleep upon opening screen lid

[dandreye]

Hi All,

Even after setting "Do nothing" in both On Battery and Plugged In columns of the Power Options my T480s running W11 still resumes from sleep upon opening screen lid. How do I prevent that?

Thanks in advance!

[dr_st]

Wish I knew. I think it's a FW bug which affects multiple Thinkpads and operating systems.

[RealBlackStuff]

Ask a certain Satya Nadella, he should know.
Apart from that, a definite solution would be to remove the magnet that triggers it (lid or palmrest).

[dandreye]

In fact this morning after spending the night asleep it didn't auto awake upon opening the lid for the 1st time. Yesterday after setting Do nothing in Power Options (and I think rebooting the laptop) I put it to sleep, closed the lid and then opened it in just a few seconds after seeing it gone asleep (the red LED changing gradually between on and off) - and to my surprise it resumed, triggering this thread. Should it matter how long it was asleep for though?..

[dr_st]

My experience (although I cannot vouch for it being 100% consistent) is that after cold boot / restart it works correctly (no auto-wake on lid open).

However if you hibernate it and resume manually, from that moment on - it starts auto-waking.

[dandreye]

However if you hibernate it and resume manually, from that moment on - it starts auto-waking.

Assuming the Hibernate feature is implied I turned it off completely as it has an SSD inside.

Just tried the same test again - Fn+4 to put it to sleep, close the lid, wait a few seconds once asleep, then reopen the lid - and it's still waking up. I'll monitor its behaviour further then to work out after how long asleep it won't autoresume.

[dr_st]

Assuming the Hibernate feature is implied I turned it off completely as it has an SSD inside.

If you didn't also disable Fast Startup, then every shutdown is effectively a hibernation (of the kernel).

[dandreye]

If you didn't also disable Fast Startup, then every shutdown is effectively a hibernation (of the kernel).

That one's still checked - I only unchecked Hibernate alone there, so that it doesn't show up among the options in Shutdown menu.

[dandreye]

Just figured out the most likely cause of different behaviour with short term vs long term sleep: the Hibernate After under Sleep in Power Options was set to default 180 Minutes as usual. A side question here if I may: did it actually hibernate in the traditional sense incl writing hyberfil.sys? I'm struggling to understand this: on one hand they advise disabling hibernation for the sake of SSD longevity, but on the other one it's still there by default due to those timers, right?

Anyway, now that 180 Minutes have been changed to Never I'm back to the original issue. Is there perhaps some BIOS setting to check that might be overriding Windows settings?

And one more thing that's just crossed my mind: could it be S0i3 instead of the proper "deep" old style sleep by chance? I recall my X1C9 behaving similarly although there were some other highly undesired triggers often awakening it in the bag besides opening the lid.

[dr_st]

And one more thing that's just crossed my mind: could it be S0i3 instead of the proper "deep" old style sleep by chance?

You can run powercfg -a to see what's actually enabled.

[dandreye]

You can run powercfg -a to see what's actually enabled.

Thank you - looks like S0i3 is not supported:

Code: Select all

The following sleep states are available on this system:
    Standby (S3)
    Hibernate
    Hybrid Sleep
    Fast Startup

The following sleep states are not available on this system:
    Standby (S1)
        The system firmware does not support this standby state.

    Standby (S2)
        The system firmware does not support this standby state.

    Standby (S0 Low Power Idle)
        The system firmware does not support this standby state.

[dandreye]

Now seeing almost 100% correct behaviour over the last few days: no automatic resume from sleep upon opening screen lid anymore until I press power button. Setting "Do nothing upon closing screen lid" definitely wasn't working at first even after reboot, so perhaps another reboot done later put that change into effect as I can't recall making any other power related changes. Just hope it stays like that.

Only once it refused to wake up for some reason no matter what I tried (ended up sticking a paper clip into that pin hole to shut it down).