Turn off monitor/display?

  • Hi folks,

    I've been scouring the net trying to figure out a way to turn off the display in BSD.  So far, no luck.  I'm running PfSense on a tiny laptop that has a 7" screen.  When I close the laptop lid, PfSense still runs (which is great); however, the monitor still runs too.  The only thing I can do is reduce the brightness of the display.  Is there a way to send a signal to ACPI to turn off the monitor?

  • Try here: http://www.freebsd.org/projects/acpi/
    You will have to install it from the command line. I installed it to play around before I installed 2.0. Your results may vary.

  • Rebel Alliance Developer Netgate

    You can also copy green_saver.ko from a FreeBSD box of the same vintage as the one you have, so a 2.0 BETA box would need green_saver.ko from FreeBSD 8.1. Then you can load it with kldload green_saver, and stick:


    in /boot/loader.conf.local to have it stick after the next reboot.

  • Hi Jimp,

    Much thanks for the response.  It seems with the latest 2.0 release the screen now shuts down automatically when I close the screen.  This is contrary to what it was doing before.  I did a find for green_saver.ko and did not find it.  Hmmmm…

  • Netgate Administrator

    Like JimP said you would have to copy it across from FreeBSD 8.1. I believe you could use the PCBSD 8.1 live cd for this purpose. It looks like your problem has already been solved though.  :)


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