https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222691
Bug ID: 222691
Summary: Thinkpad t440p - lid sysctl gets confused
Product: Base System
Version: CURRENT
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: misc
Assignee: [email protected]
Reporter: [email protected]
Created attachment 186804
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=186804&action=edit
AC adapter state change script to put the notebook into sleep on ac disconnect,
but only if the lid is closed.
I have created a small acpi script (attached) to monitor the ac line and
suspend the machine if the ac line is removed while the lid is closed. This
script complements the lid script that suspends the machine if the lid is
closed on battery.
I have found, however, that the value of the lid sysctl changes without a
hardware state change. My guess is that there is some condition where the lid
is closed or opened that the sysctl doesn't update.
For example, my log shows:
ACLINE Event. acline devd value:\'0x01\', lid sysctl:\'0\'.
AC Power inserted when lid was closed. No need for sleep.
However, the lid was open. Typically ``sysctl -n dev.acpi_lid.0.state'' is 0
for closed lid, 1 for open. I actually don't care what the value is, as long
as it remains consistent, I guess the devd side of things stays constant (which
is even more confusing) - the event 0x01 = open event, 0x00 = close event.
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