Re: RPI3B+ disable HDMI

Robert Crowston via freebsd-arm <[email protected]>
Newsgroups gmane.os.freebsd.devel.arm
Message-ID <psXiooCMFAAU2BaNxgD2m-w4n_7ndkCl37vzhM-l1Tvle7sP4QW9mR_ijbtUIEWZ_njOFhDRcZLg5-zlIQUPe08sl1Fk4A95_krXx25DfW4=@protonmail.com>
There’s an undocumented flag you can add to config.txt, hdmi_blanking=2, which I believe boots the pi without starting the video pipeline.

On Sat, Oct 31, 2020 at 19:59, Stefan Parvu <[email protected]> wrote:

> Hi,
>
> We have started now testing our product using FreeBSD 12.2 on RPI3 and 3B+.
>
> I have a question how one can start to disable things from the board which are not needed, to save as much as possible power. For example starting with HDMI port. I am trying to do some basic tests running our data recorders with FreeBSD 12.2 only on batteries. (4 x 18650 Li-ion 3500 mAh). Would it boot from batteries. Has anyone tried before this?
>
> Thanks,
> Stefan
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