prakashpandey

Estimable
Jan 29, 2016
3
0
4,510
0
I have 2 devices Device A and B and a LCD monitor M with VGA port.


Device A : Laptop (HDMI output)
Device B : Respberrypi 3 (HDMI output)
Device S : Satellite dish TV Setup box(HDMI output).
Device M: LCD Monitor VGA port (input).
Device X : Some other LCD Monitor with HDMI port (input).

What I want to do?
Connect Device B(using HDMI to VGA converter) to Device M.


Device A -> HDMI to VGA converter -> M (works fine).
This means Device A, HDMI to VGA converter and Monitor M are working fine.

Device B-> HDMI cable -> X (works fine).
This means Device B is working.

This means Device A,B , Monitor M, HDMI to VGA converter all are working fine.

But,

Device B -> HDMI to VGA converter -> M (not working, LCD showing no signal found).

Device S -> HDMI to VGA converter -> M (not working, LCD showing no signal found).


Where is the problem while connecting Device B to monitor M?
Thanks..!


 

budwich

Estimable
Oct 30, 2015
205
0
5,160
53
as suggested, you need to state your resolution settings and further the actual model involved not just "generic models" (sony bravia) if you hope to get more detailed suggestions. On computers, you need to identify operating system levels along with interface cards.

further suggestions would be to set your resolution on the source to low (something like 720p).

still further, your "proposition" that "This means Device A,B , Monitor M, HDMI to VGA converter all are working fine." isn't totally stated accurate... these devices AND their SETTINGS, for the configurations that you have been successful with, work fine. That does not imply that the devices will work for any other configuration without "adjustments" other than "cable and device swaps".
Hence, the need to be more specific.

Further, to eliminate the "settings stuff" associated with computers and the like, you should focus on "simple" source devices. Get a dvd player and try your setup (or work more with the sat setup which also didn't work for "no reason"). Once you get those working or find that issue, it will likely help resolve the others.

Still further, what kind of vga cables have you tried. You need to ensure that your are using one that has ALL pins connected correctly especially ground pins.
 

Someone Somewhere

Dignified
Moderator
HDMI-VGA cables are non-standard, and may rely on your computer doing stuff that is not in the official HDMI spec.That cable probably came with your laptop, and your laptop has special hardware/firmware allowing it to drive the adapter. The other devices don't.

You may need either an active HDMI-VGA converter (which actually converts the signal, rather than just pushing VGA signals down an HDMI plug, as your laptop probably does), or a new monitor.
 

Tom Tancredi

Honorable
May 9, 2013
402
1
11,960
100
Your 'laptop' part is questionable as your not identifying what Laptop it is.
Example; A Macbook uses HDMI 1.4 where as a Dell/Windows Laptop uses HDMI 1.2/1.3 .
Difference causes problems as there isn't the included voltage being pushed out you would get on a MacBook, or say a new BlueRay Player to 'power' the 'adapter' when you try with a Dell/Win.
Rasberries are very low power low cost devices with very low end 'just get it on' standards. You might want to check the power relationship / HDMI standard that it outputs. It just may not be 'wired' to add the necessary power for the converter.
 

prakashpandey

Estimable
Jan 29, 2016
3
0
4,510
0


I am using Sony Vaio with Linux(Ubuntu)
HDMI to VGA converter is working fine with many laptops, PCs.
I have tested it with 5 laptops dell, hp and 3 windows PC.
 
Using the converter will not allow the device to handshake, detect the monitor, and set its output to be compatible with it. Try setting the two devices that don't work to a resolution that is compatible while connected to a TV with HDMI and then connect them to the HDMI VGA converter and monitor.
 

budwich

Estimable
Oct 30, 2015
205
0
5,160
53
you will likely get better answer if you include the actual equipment as opposed to "equipment x". Having said that, you need to provide / look at the resolution settings that you have for the equipment involved and further change any "auto" ones to a specific setting. Anything beyond that, people are just guessing without actual equipment.

just seen the additional posts... you need to identify the monitors involved.
 

prakashpandey

Estimable
Jan 29, 2016
3
0
4,510
0


Device X is Sony Bravia TV 1920 * 1080.
 

budwich

Estimable
Oct 30, 2015
205
0
5,160
53
as suggested, you need to state your resolution settings and further the actual model involved not just "generic models" (sony bravia) if you hope to get more detailed suggestions. On computers, you need to identify operating system levels along with interface cards.

further suggestions would be to set your resolution on the source to low (something like 720p).

still further, your "proposition" that "This means Device A,B , Monitor M, HDMI to VGA converter all are working fine." isn't totally stated accurate... these devices AND their SETTINGS, for the configurations that you have been successful with, work fine. That does not imply that the devices will work for any other configuration without "adjustments" other than "cable and device swaps".
Hence, the need to be more specific.

Further, to eliminate the "settings stuff" associated with computers and the like, you should focus on "simple" source devices. Get a dvd player and try your setup (or work more with the sat setup which also didn't work for "no reason"). Once you get those working or find that issue, it will likely help resolve the others.

Still further, what kind of vga cables have you tried. You need to ensure that your are using one that has ALL pins connected correctly especially ground pins.
 
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