Turn off iMac screen
reddit / freebsd

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fridder · 2021-05-21 04:03

Hello. I am wanting to repurpose an old iMac and I was wondering if
there was a way to have the screen turn off automatically. My
searching, etc has not yielded a lot of results mainly because it
looks like the terminal driver changed recently?

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rykolepl · 2021-05-21 05:58

I'm not sure about freebsd, but I remember that linux automatically
turned screen off after 30 minutes I think.

You can run freebsd (installer iso without actually installing it will
be enough) in virtualbox, and just leave it, and check if it's blank
after 30 minutes of inactivity.

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nickbernstein · 2021-05-21 06:21

Unlike (most flavors of) linux, you generally shouldn't resort to
googling until after you check the handbook/manual. I don't know about
iMac hardware, but I assume they use standard power management:

https://docs.freebsd.org/en/books/handbook/config/#acpi-overview

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Max-Normal-88 · 2021-05-21 07:31

Power saving does not work on vm. Not even Linux

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abmrk1010 · 2021-05-21 10:32

🦠

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fridder · 2021-05-21 15:07

I’ll give this a look today. Thanks!!

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mattern1974 · 2021-05-21 20:46

I think it depends if you are running a desktop environment such as
XFCE, GNOME, KDE, etc.  Each of those has power management utilities
where you can set the screen off time.  If you are not running a DE, I
have no knowledge as to what power management services you can run
straight from the shell prompt but if you check out the manual there's
most likely something.