Dual display

wemarch

Hey everybody, finally i managed to solder the GERT VGA-adapter!
I hope to find the time to test if it works this week. i will share my experiences here :-)

Jeff

Looking forward seeing your experiences ;)

wemarch

So the VGA adapter works (despite ugly soldering) but i did not manage to use VGA and HDMI simultaneously. After some further research on the topic i think it is necessary to use a custom kernel.

On ubuntu i know you can configure dual display using xrandr, but i have no idea how to do something like that with raspbian.

Please see this very interesting question at stackexchange: http://raspberrypi.stackexchange.com/a/27048/55885.

I will try to dig a little deeper but to be honest i’m not deep enough into linux and development to fully understand this issue.
If you have any advice or interesting links on how to get dual display to work, please share!

lolobyte

@wemarch

i have something for you.
I try this but it doesn’t work how i wish.

Maybe u can use some ideas from this video.

https://www.youtube.com/watch?v=d2ouG1VmD88&feature=youtu.be

Popky

You can run Dual monitor on Rpi.
If you search Youtube, first result ( link ) will show you, how to do that via external VGA Adapter to USB port. (see ytb video description ~50USD).
You can get cheaper solutions on ebay (~7USD) but there you need to somehow get right product, that is supported by Rpi, even if product description says only Win 7/8/10. You can see this raspberrypi.org thread for more details.

lucallmon

Has anyone tried to use a USB to VGA adapter? Like this one:

https://www.amazon.com/gp/product/B002FJQXXC/ref=od_aui_detailpages00?ie=UTF8&psc=1

I’m not sure about the driver situation. I’ve used it before on a desktop computer.

I’m looking to use 2 monitors to make a large mirror. Any thoughts?

magicpokey

There’s always an outside solution (though you would need a separate power supply). Basically a box that takes two monitors and plugs into one port on the Pi (and the pi thinks it sees one superwide monitor).

Here is such a thing from Amazon (for DisplayPort, but I am sure HDMI adapters or a box for hdmi exists):
https://www.amazon.co.uk/Matrox-DualHead2Go-Digital-Display-Support/dp/B0080K6WIG

lucallmon

This post is deleted!

wemarch

@magicpokey
This sounds like a great idea, did you already try it?

magicpokey

@wemarch Not on a raspberry pi, I used one a few years ago when setting up a cctv security system for a local business. But it SHOULD work (assuming you can find one with hdmi outs) since it doesn’t take any kind of drivers, it just reports a 2560x720 (2 identical 1280x720 monitors in the case of the cctv setup I put together) sized monitor to the video chipset.

The question is, can the video core of a Raspberry Pi handle an ultrawide display?