Update X when laptop lip is closed

[Yuri Pankov]

Noah Palmer wrote:
> On Sat, Feb 15, 2020 at 11:08 PM Yuri Pankov <yuripv at yuripv.me> wrote:
> 
>> Noah Palmer wrote:
>>> is there a way to automatically remove or add the display to X when the
>>> laptop lid is opened or closed. I have been using a script to read
>>> dev.acpi_lid.0.state, but is there better way? Also what is the proper
>> way
>>> to reply to someone while using a mailing list. Do you reply to the
>> person
>>> or freebsd-questions at freebsd.org.
>>
>> If you are polling the dev.acpi_lid.0.state value, see /etc/devd.conf
>> for examples of ACPI events notification, so you could invoke the need
>> actions when lid is open/closed.
>>
> Okay that seems to be the solution. I also have an issue that
> dev.acpi_lid.0.state is incorrect if the lid was open at boot. you have to
> close and open the lid for the value to be correct.

Interesting, I'm seeing the same on my lenovo laptop, something to look 
into.  BTW, there's somewhat related PR filed: 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240881.