From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: <20140515222634.8E091B82A@mail.bitblocks.com> References: <20140515222634.8E091B82A@mail.bitblocks.com> Date: Fri, 16 May 2014 13:53:16 +1000 Message-ID: From: Shane Morris To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: multipart/alternative; boundary=001a11c258dc8456c804f97c5a41 Subject: Re: [9fans] RaspberryPi, monitor energy saving Topicbox-Message-UUID: e6ab47fe-ead8-11e9-9d60-3106f5b1d025 --001a11c258dc8456c804f97c5a41 Content-Type: text/plain; charset=UTF-8 This might be wildly off the mark, but is there something VESA related to do this, VGA monitors, et al? I prepare to stand flamed. ^.^ On Fri, May 16, 2014 at 8:26 AM, Bakul Shah wrote: > On Thu, 15 May 2014 22:04:34 BST "Steve Simon" wrote: > > Its just wonderful to have a raspberry pi as a plan9 terminal, > > but the energy saving of the pi is outweighed by the monitor I use. > > > > The Pi's display code blanks the screen after a while but this does > > not shutdown the monitor. > > > > I dug a little and it seems I need to send CEC (Consumer Electronics > Control) > > messages over HDMI - Via a Pi GPU entrypoint. > > > > > > Porting libcec looks a little painful especially as I only need to be > able > > to send two messages (turn on and turn off). > > > > Anyone know anything about this stuff? is CEC what I need or is there > some > > other (simpler) way? > > May be use a gpio pin to control a switch?! > > --001a11c258dc8456c804f97c5a41 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
This might be wildly off the mark, but is there something = VESA related to do this, VGA monitors, et al?

I prepare = to stand flamed. ^.^


On Fri, May 16, 2014 at 8:26 AM, Bakul Shah <bakul@bitblocks.com&g= t; wrote:
On Thu, 15 May 2014 22:04:34 BST &q= uot;Steve Simon" <steve@quint= ile.net> wrote:
> Its just wonderful to have a raspberry pi as a plan9 terminal,
> but the energy saving of the pi is outweighed by the monitor I use. >
> The Pi's display code blanks the screen after a while but this doe= s
> not shutdown the monitor.
>
> I dug a little and it seems I need to send CEC (Consumer Electronics C= ontrol)
> messages over HDMI - Via a Pi GPU entrypoint.
>
>
> Porting libcec looks a little painful especially as I only need to be = able
> to send two messages (turn on and turn off).
>
> Anyone know anything about this stuff? is CEC what I need or is there = some
> other (simpler) way?

May be use a gpio pin to control a switch?!


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