Disable HDMI/GPU

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MoikvanDoik
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Disable HDMI/GPU

Unread post by MoikvanDoik » Thu Oct 10, 2019 12:44 am

Hello everyone,

I'm sorry if this question has been asked before, but is it possible to fully disable the HDMI port and the GPU?
I use my Odroid N2 as a headless server and it would be nice to lower the power consumption and maybe increase the availiable RAM.
Thank you!

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mad_ady
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Re: Disable HDMI/GPU

Unread post by mad_ady » Thu Oct 10, 2019 1:02 am

Last time this was tried there were some severe instabilities after freeing the gpu memory
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MoikvanDoik
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Re: Disable HDMI/GPU

Unread post by MoikvanDoik » Thu Oct 10, 2019 1:28 am

Thank you for your reply.
A lower power consumption would be more important to me than additional RAM.
My power meter shows 8 W in idle. I already checked my govenor. It allows the CPU going down to 100 MHz.
I will check it with another power supply.

Does someone has other ideas to lower the power consumption or do you think that this is already a good value?
Thank you

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mad_ady
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Re: Disable HDMI/GPU

Unread post by mad_ady » Thu Oct 10, 2019 1:33 am

Look around /sys. There should be an entry to set gpu governor to simple_ondemand instead of performance

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odroid
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Re: Disable HDMI/GPU

Unread post by odroid » Thu Oct 10, 2019 8:51 am

Idle mode power consumption must be less than 2.5Watt if you don't connect any devices to the N2.
We measured it on the DC plug path.
So I think your PSU consumes energy more than N2 itself.

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