Jonathazn
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What kind of monitor can I use?

Thu Dec 12, 2019 7:05 pm

So I'm literally just starting to know what Raspberry Pi is and I'm going to buy a Raspberry Pi 4, but you need a display of course. I find it a bit confusing to know what kind of monitor I can use for the RPi, can I use any display monitor that has a HDMI socket or HDMI socket or not. If so, what are these other screens that costs a whole lot of money when you search for displays that work with Raspberry Pi? I'm talking about these kind of displays:
https://www.google.com/search?q=small+h ... e&ie=UTF-8

Thanks in advance,

Jonathan

jamesh
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Re: What kind of monitor can I use?

Thu Dec 12, 2019 8:36 pm

Anything* with HDMI or DVI input will work. It's just a different connector.


* We have had reports of some less common devices not responding with valid EDID (identifying bits of data that the monitor provides to the Pi to tell it what resolutions it supports). I've never seen it with all the monitors/TV's I have tried, and there are usually workarounds for this.
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Re: What kind of monitor can I use?

Thu Dec 12, 2019 8:49 pm

"Toilet monitor" is a NO NO! :D

Just to add, even older VGA equipped monitors can also be used (am using one), again one will need a HDMI to VGA converter for that.
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Jonathazn
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Re: What kind of monitor can I use?

Thu Dec 12, 2019 11:51 pm

Thanks for the clear and fast responses!

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Re: What kind of monitor can I use?

Fri Dec 13, 2019 12:23 am

Just to show how wild it can get, I have Pis hooked up to an HDMI/USB KVM switch, where to video then goes through an HDMI to VGA converter to a VGA/PS/2 KVM switch and on the my 27" 1920x1080 Viewsonic VA2702w monitor. Works fine and I don't have to play with parameters or and such hassles. To do it sort of graphically...

Pi-->KVM1-->HDMI to VGA-->KVM2-->monitor.

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Gavinmc42
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Re: What kind of monitor can I use?

Fri Dec 13, 2019 1:20 am

Don't forget the old composite TV as an option.
Just ordered a Waveshare 800x480 4.5" HDMI for a self xmas present ;)
That probably about as small as I want to go.
HDMI input in Car media players works.

It is pretty hard to find something that does not work with the right cable/adapter/converter etc.
I ended up with a plastic clip-it storage contain to store them all in.
But most oldish monitors are DVI and that is electrically HMDI, you just need an HDMI to DVI adapter or converter cable.
HDMI to mini(Zero), HDMI to Micro(Pi4) adapters $2.80?
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Re: What kind of monitor can I use?

Fri Dec 13, 2019 2:24 pm

USB DisplayLink 2.0 to VGA used to also be an option though that seems to be broken under Buster.

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Gavinmc42
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Re: What kind of monitor can I use?

Sat Dec 14, 2019 7:42 am

USB DisplayLink 2.0 to VGA used to also be an option though that seems to be broken under Buster.
Buster or USB driver issue?
How fast would that be on USB3?
Another 2 screens?
USB3 to LVDS LCD?
With 5 or 6 SPI screems?
That's a lot of displays.
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Re: What kind of monitor can I use?

Sat Dec 14, 2019 12:40 pm

Gavinmc42 wrote:
Sat Dec 14, 2019 7:42 am
USB DisplayLink 2.0 to VGA used to also be an option though that seems to be broken under Buster.
Buster or USB driver issue?
No idea, only that it used to work and now doesn't and the PI seems to have taken to ignoring "framebuffer_depth=" settings in config.txt.

https://www.raspberrypi.org/forums/view ... 0#p1573257
https://www.raspberrypi.org/forums/view ... 0#p1575036
Gavinmc42 wrote:
Sat Dec 14, 2019 7:42 am
How fast would that be on USB3?
I don't believe DisplayLink 3.0 is supported on non-X86 platforms as the driver for that is a proprietary binary blob.

So one is limited to DisplayLink 2.0, VGA or LVDS, and perhaps 1280x1024 but that is quite respectable and usable.
Gavinmc42 wrote:
Sat Dec 14, 2019 7:42 am
Another 2 screens?
I recall reading there may be a limit of 6 additional screens but not sure why that would be. But being able to easily add additional screens is the big advantage of DisplayLink.

The more one adds the more host overhead there is and they are not ideal for gaming or high-rate updating but perfectly good for desktop and signage use. They don't degrade system performance anywhere near what some people like to claim they do.

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