[SOLVED] BIOS Won't Output to Display When Using VGA to HDMI Adapter

Hmmm.... @Appletax check your linkage. Verbiage is HDMI/VGA. Linkage is the IDE adapter again.

I'll bend digital to digital (HDMI/DVI/DP) but not analogue to digital (HDMI/VGA). I've found too much weirdness over the years as you have seen.
 
Appletax said:
Really don't want to have to get another monitor just to have a VGA port.
Click to expand...
Pffft! ...and we were just discussing IDE adapters to support old drives. You need a VGA monitor to support that old computer. Got to support the old with the new - heh. (I've got too many old/small VGA displays around here....) I recently realized I don't have a working machine to support the old floppy drives.
 
Going to try the Plugable anyways and if it doesn't work, will return it.

Hi,

Thank you for contacting us, I am sorry, based on the behavior you describe I believe our cable would behave similarly.

Converting from VGA to HDMI is generally going to create a more blurry or fuzzy image then a native HDMI output. Converting from VGA to HDMI is inherently less precise than a native HDMI signal, we see similar blurry or fuzzy images on modern displays with VGA inputs that use a similar process internally.

For entering the BIOS, generally the display adapter should not be preventing the computer from entering the BIOS, however it may be that the display adapter is either not fully initialized by the time the BIOS message has passed, or the BIOS resolution is not supported correctly by the adapter. Most active adapters, like VGA to HDMI, or DisplayPort to HDMI will take a moment to power on and start processing video data, this can be anywhere around a few seconds, easily enough to miss the initial system power on screen.

Even if nothing is displayed you can try pressing the BIOS entry key at startup to see if the computer will enter the BIOS and then the display will initialize. With many modern computers they will pass the BIOS access period before a directly connected HDMI or DisplayPort monitor will wake from power save mode. The BIOS entry key can often be found in the system manufacturer's manual.

I am sorry, based on the behavior you are seeing I do not expect our VGA to HDMI adapter to behave significantly differently from the CableMatters adapter.


Pat
Plugable Technologies
 
VGA is analog...
HDMI is digital...

YOU CANNOT USE A CHEAP PILE OF WIRES TO CONVERT THEM!

The only time these adapters work is when the video card has its own internal circuitry to detect and deal with the stupidity you've just inflicted on it. If you must convert across this line, you must use a POWERED device that is actually intelligent. They aren't "cheap".

You can wire up adapters to jump between DVI/HDMI/Display port all you want... they're all digital, and all using the same tech in slightly different wrappers.

You can wire up VGA/Composite/Component/and S-Video all you want because of the same.

You CANNOT JUMP THE DIVIDE! I don't care how many cheap wires you see on Amazon.


Make note of the sub part that flips the direction... these devices are directional.
 
I ran into this some time ago while trying to figure out why I was having problems with a crashcart adapter. As @Sky-Knight said they are two different signals. Before the OS loads it's only using the native hardware to process the signal so you can't mix output and input. You need a signal converter. Without the converter you have to have an OS to parse the video signal.
 
Sky-Knight said:
VGA is analog...
HDMI is digital...

YOU CANNOT USE A CHEAP PILE OF WIRES TO CONVERT THEM!

The only time these adapters work is when the video card has its own internal circuitry to detect and deal with the stupidity you've just inflicted on it. If you must convert across this line, you must use a POWERED device that is actually intelligent. They aren't "cheap".

You can wire up adapters to jump between DVI/HDMI/Display port all you want... they're all digital, and all using the same tech in slightly different wrappers.

You can wire up VGA/Composite/Component/and S-Video all you want because of the same.

You CANNOT JUMP THE DIVIDE! I don't care how many cheap wires you see on Amazon.


Make note of the sub part that flips the direction... these devices are directional.
Click to expand...

I canceled the Plugable and bought the JideTech. THANK YOU!

I thought the Plugable might work because it's "ACTIVE." It has the same design as my Cable Matters, so it probably works the same.

The powered converter will be much better than having to hang onto an ancient monitor - I will be able to use my modern monitor :)
 
@Appletax I hope it works, I haven't used that specific adapter but it looks worthy of a try.

Last time I was in this space I wound up spending almost $100 for a magic box to do this. It's an AV specialty item, but that box could ingest hdmi or VGA and spit it out VGA, HDMI, or Composite... Which makes it both of the magic boxes listed under the link I shared in one.

The capacity is nice, but the complexity not so much. The more complicated boxes I used to put into conference rooms all the time, and they resulted in nothing but user complaints! These things are simpler, single task, and plug and go. So let me know how it works!
 
Sky-Knight said:
@Appletax I hope it works, I haven't used that specific adapter but it looks worthy of a try.

Last time I was in this space I wound up spending almost $100 for a magic box to do this. It's an AV specialty item, but that box could ingest hdmi or VGA and spit it out VGA, HDMI, or Composite... Which makes it both of the magic boxes listed under the link I shared in one.

The capacity is nice, but the complexity not so much. The more complicated boxes I used to put into conference rooms all the time, and they resulted in nothing but user complaints! These things are simpler, single task, and plug and go. So let me know how it works!
Click to expand...

It did not work. Same quality. Same issue. The only solution is to keep on-hand a spare VGA monitor.
 
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