Hi all,
I’ve been running into a strange issue on my Aspire 5 (A515-56) that seems related to how the system interprets the lid-open event. Maybe someone else has experienced this and found a fix.
Here’s what I see:
- When the laptop is in sleep mode, opening the lid wakes it normally every time.
- But when the machine is fully shut down, opening the lid does nothing. I have to press the power button to get it going. No indicator lights, no fan spin—almost as if the lid sensor isn’t triggering a boot event during cold start.
Things I’ve already checked:
- BIOS updated to the most recent build.
- Windows 11 Fast Startup disabled (both in OS and UEFI).
- Verified the “Power On Lid Open” feature is toggled on in BIOS.
- Looked through Event Viewer—no relevant entries around failed attempts.
It’s kind of puzzling because the feature works fine in sleep but fails completely in shutdown. While testing, I had a dozen Chrome tabs open—including a random one on the Dunkin Donuts Muffins Menu (don’t ask, late-night cravings)—and the system otherwise behaved normally. So it definitely feels isolated to BIOS/firmware handling of lid events at cold boot.
My questions:
- Does anyone know if Acer limits “Wake on Lid” to only sleep/hibernate states instead of full shutdown?
- Are there advanced BIOS options (ErP, Modern Standby, deep sleep states) that could be blocking it?
- Has anyone found a workaround—like registry edits, custom ACPI drivers, or EC firmware tweaks—to force cold-boot on lid open?
Any insights would be really appreciated. Thanks!
