darkhorn
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What HDMI to VGA adapters work for all monitors?

Fri May 24, 2019 9:43 pm

I have a monitor (tube) produced in March 2000. 100-240V ~ 60/50Hz 1.5A, it also has a 14-pin VGA cable. And I have a cheap HDMI to VGA converter. I can use my tube monitor when I connect it to my laptop via the HDMI to VGA converter. So both HDMI to VGA converter and the monitor are functioning but the issue starts when I use my Raspberry Pi. I cannot use my tube monitor with my Raspberry Pi, there is no signal in my monitor when I connect it to Raspberry Pi via the HDMI to VGA converter. I know the config.txt and I have worked on it for a half day but I wasn't able to get any signal. What HDMI to VGA converters are highly guaranteed to work with very old monitors?

dl324
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Re: What HDMI to VGA adapters work for all monitors?

Fri May 24, 2019 11:27 pm

darkhorn wrote:
Fri May 24, 2019 9:43 pm
What HDMI to VGA converters are highly guaranteed to work with very old monitors?
Don't think you're going to get a list. Too many variables and few people will be using CRT monitors these days.

I purchased an HDMI to VGA converter to use for playing with Pi's because I have a number of idle VGA monitors (LCD). I hadn't gotten around to trying it until now because I used composite video to configure and have vncserver started at reboot so I've been using vncviewer almost exclusively.

The converter is VicTsing VC38BVT Model H79. Works fine with the first monitor I grabbed (1440x900).

Is your Pi already configured? Or are you trying to do initial setup?

W. H. Heydt
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Re: What HDMI to VGA adapters work for all monitors?

Sat May 25, 2019 2:09 am

This first thing I would do is set force_hdmi, followed by putting the monitor geometry settings in /boot/config.txt. It's quite possible (given the age) that the monitor doesn't give proper EDID feedback (or that the converter doesn't report it).

Personally, I try to avoid using converters as it is often cheaper to find a used monitor that has DVI or HDMI input than it is to buy a converter. That said, I do have one in routine use that I got from Monoprice that takes the output side of a 4-port HDMI/USB KVM switch into a port on an 8-port VGA/PS2 KVM switch. The converter has it's own PSU and cost more than a Pi, but it's been working solidly for about 5 or 6 years now.

LTolledo
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Re: What HDMI to VGA adapters work for all monitors?

Sat May 25, 2019 8:02 am

Am using generic ones that are are available at Amazon....
Tested it on my 10yr old Viewsonic monitor... displayed properly....Rasbian set the right resolution....

am also using one now.... connected a 8" XGA monitor to my RPi1B c 2012
"Don't come to me with 'issues' for I don't know how to deal with those
Come to me with 'problems' and I'll help you find solutions"

Some people be like:
"Help me! Am drowning! But dont you dare touch me nor come near me!"

hippy
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Re: What HDMI to VGA adapters work for all monitors?

Sat May 25, 2019 12:05 pm

darkhorn wrote:
Fri May 24, 2019 9:43 pm
What HDMI to VGA converters are highly guaranteed to work with very old monitors?
If the converter works with your laptop there should be no reason it wouldn't work with your PI. It doesn't seem to me to be a converter issue.

I would imagine the Pi isn't configured the same as the laptop. The first thing to do would be to determine what mode the HDMI of the Pi is in ( I believe it's "tvservice" which will help there ), and, if you can, determine what mode the laptop's HDMI is using.

You can work your way through the various HDMI settings to see which works. The monitor will probably accept 640x480 or 800x600 so start with those to limit the options you need to try before something works.

The other possibility is that the converter isn't getting enough power from the Pi when it can from the laptop. Adding an external supply for the converter may help.

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Re: What HDMI to VGA adapters work for all monitors?

Sat May 25, 2019 12:18 pm

FWIW I've tried a few (over the years):
http://www.cpmspectrepi.uk/raspberry_pi ... erter.html
http://www.cpmspectrepi.uk/raspberry_pi ... rter2.html
http://www.cpmspectrepi.uk/raspberry_pi ... erter.html
http://www.cpmspectrepi.uk/raspberry_pi ... Audio.html
(all have worked O.K. with the various monitors or T.V.'s I have so far)
Early Pi's often needed the then available devices to be externally powered.
W.r.t. the use of the tvservice command etc. see my notes here:
http://www.cpmspectrepi.uk/raspberry_pi ... tings.html
Trev.
Still running Raspbian Jessie on some older Pi's (an A, B1, B2, B+, P2B, 3xP0, P0W) but Stretch on my 2xP3A+, P3B+, P3B, B+, A+ and a B2. See: https://www.cpmspectrepi.uk/raspberry_pi/raspiidx.htm

333over106
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Re: What HDMI to VGA adapters work for all monitors?

Sat May 25, 2019 8:09 pm

I have never used a CRT (with a PI), but only several very elderly (early naughties) Dell monitors. HDMI Adapter converter SKU:0301-ADPT-HDMI-VGA-8K Manufacturers's SKU HCB-0366 has always worked. It has an stereo cabal output, which even works. Good luck!

darkhorn
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Location: Europe

Re: What HDMI to VGA adapters work for all monitors?

Tue Jun 25, 2019 9:40 pm

I have bought this one and it works.

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