Connecting Monitor from VGA to DVI-D

[Khameleon]

I have a PC with a Geforce 7300 SE/7200GS graphics card and it has both VGA and DVI-D ports. My monitor also has these two ports as well as a HDMI port. What I want to do is connect my PC to Monitor using the VGA cable that has a VGA/DVI-D convertor so it uses the DVI-D port rather than the VGA port.

At the moment the monitor is not detecting a signal when I use this method but works fine when its VGA to VGA. Do I need to do something else to get this setup working?

__________________
Khameleon WINS.....
FLAWLESS VICTORY
FATALITY

[Hard core Rikki]

Couldnt you go DVI-D directly? Its like, 4 bucks.
The convertor would prety much give you as flakey a picture as VGA can give, without the benefit of unaltered digital output.

__________________

deviantART | Blog | VBA-M | GeneralEmu | XTemu | FMVTool2 | @ES | Shendo new

NGemu toolbar http://ngemu.ourtoolbar.com

[SCHUMI_4EVER]

So you're saying DVI to VGA with DVI adapter doesn't work?

__________________

Intel Core2Quad Q9550 (2.83Ghz stock) | ASUS P5Q | 2x2GB Transcend JetRam DDR2-800 | ASUS ENGTX260\HDTP\896M | Windows Vista Home Premium 64bit SP1

The Champ has retired but may his Legacy live on FOREVER !!!!

No$GBA DS FAQ 2.0

Get it right fools! The glass is HALF-EMPTY, not half-full!!!

!!! WARNING: Emulation requires a brain !!! WARNING: Emulation =/= Piracy !!!

[masta.g.86]

You can't go from VGA (analog) to DVI-D (digital).

If your monitor had a DVI-A (analog) port there would be no problem, so long as you use a VGA to DVI-A cable or adapter as well.

__________________

The truth is there for those who choose to see it.

Core i7 2600K 4.2GHz | 8GB DDR3 1600MHz
AMD Radeon HD6870 Vapor-X | Samsung 24" Widescreen 1920x1200
Realtek HD 7.1 | Klipsch 5.1 Surround Sound
Samsung 6X BD-ROM | WD 1TB + 2TB Black
Windows 7 Ultimate 64bit

Join the NGEmu Folding@Home Team! Info
Download the standard client here OR preferably download the GPU or SMP client here.
Set your team ID to: 161326

[SCHUMI_4EVER]

Well you can but it matters which way round. The port on the monitor determines everything. So if you want VGA you have to use the VGA port, if you want to use DVI then you have to use DVI, the card can then take the other end with an adapter.

__________________

Intel Core2Quad Q9550 (2.83Ghz stock) | ASUS P5Q | 2x2GB Transcend JetRam DDR2-800 | ASUS ENGTX260\HDTP\896M | Windows Vista Home Premium 64bit SP1

The Champ has retired but may his Legacy live on FOREVER !!!!

No$GBA DS FAQ 2.0

Get it right fools! The glass is HALF-EMPTY, not half-full!!!

!!! WARNING: Emulation requires a brain !!! WARNING: Emulation =/= Piracy !!!

[masta.g.86]

Therein lies the problem. Most DVI ports on displays are DVI-D (digital only).

__________________

The truth is there for those who choose to see it.

Core i7 2600K 4.2GHz | 8GB DDR3 1600MHz
AMD Radeon HD6870 Vapor-X | Samsung 24" Widescreen 1920x1200
Realtek HD 7.1 | Klipsch 5.1 Surround Sound
Samsung 6X BD-ROM | WD 1TB + 2TB Black
Windows 7 Ultimate 64bit

Join the NGEmu Folding@Home Team! Info
Download the standard client here OR preferably download the GPU or SMP client here.
Set your team ID to: 161326

[Princess Garnet]

If you're using a VGA cable, then you don't need to worry about where it plugs in as it'll be analog anyway.

If your PC and monitor both have DVI, I suggest you just get a cable and use that.

A DVI to VGA adapter doesn't make a VGA cable become a DVI cable. The signal will only be as good as the lowest denominator. You need a DVI cable (not a VGA cable using a DVI to VGA adapter; that converts the physical layout only but not the digital workings) that is connected to a DVI output on your PC and DVI input on your display for it to be the better thing.

Otherwise the rest all falls back to the same sort of analog signal anyway, so if you're going to use VGA, I'd just hook it up that way on both ends to rid yourself of the redundant adapter.

__________________
"The heart has it's reasons that reason knows nothing of."

[Khameleon]

Originally Posted by masta.g.86

You can't go from VGA (analog) to DVI-D (digital).

If your monitor had a DVI-A (analog) port there would be no problem, so long as you use a VGA to DVI-A cable or adapter as well.

Originally Posted by masta.g.86

Therein lies the problem. Most DVI ports on displays are DVI-D (digital only).

Thats how my monitor is. before I purchased it I had no idea there were different DVI connections, but after a bit of research, I discovered I have both DVI-D connections on my PC card and Monitor.

Originally Posted by Princess Garnet

If you're using a VGA cable, then you don't need to worry about where it plugs in as it'll be analog anyway.

If your PC and monitor both have DVI, I suggest you just get a cable and use that.

A DVI to VGA adapter doesn't make a VGA cable become a DVI cable. The signal will only be as good as the lowest denominator. You need a DVI cable (not a VGA cable using a DVI to VGA adapter; that converts the physical layout only but not the digital workings) that is connected to a DVI output on your PC and DVI input on your display for it to be the better thing.

Otherwise the rest all falls back to the same sort of analog signal anyway, so if you're going to use VGA, I'd just hook it up that way on both ends to rid yourself of the redundant adapter.

Thanks, will try using a proper DVI-D cable and see if it works, If those VGA/DVI adapters dont convert the digital to analog, what use can they be apart from sticking two wires together?

__________________
Khameleon WINS.....
FLAWLESS VICTORY
FATALITY

[Princess Garnet]

Originally Posted by Khameleon

If those VGA/DVI adapters dont convert the digital to analog, what use can they be apart from sticking two wires together?

It's mostly for backwards compatibility through the transition from VGA to DVI. There's still CRTs, and much more so, LCDs that use VGA, out there.

The adapters are more intended to be used on the video card side, because most video cards will still be able to produce an analog signal through even a DVI output (though that slowly seems to be going away). The monitor, however, usually only accepts an input of the type it is, so use adapters on the video card end only, if at all.

__________________
"The heart has it's reasons that reason knows nothing of."

[Khameleon]

Originally Posted by Princess Garnet

It's mostly for backwards compatibility through the transition from VGA to DVI. There's still CRTs, and much more so, LCDs that use VGA, out there.

The adapters are more intended to be used on the video card side, because most video cards will still be able to produce an analog signal through even a DVI output (though that slowly seems to be going away). The monitor, however, usually only accepts an input of the type it is, so use adapters on the video card end only, if at all.

Ah that explains that then, cheers.

I have now tried using a DVI-D cable and have connected it up directly into PC and monitor. However, there still seems to be an issue where the monitor does detect something, but it wants to go into Power Saving Mode, and stay there. Tried to restart PC but this didnt help either. Is there something im missing here?

__________________
Khameleon WINS.....
FLAWLESS VICTORY
FATALITY

[Princess Garnet]

Originally Posted by Khameleon

I have now tried using a DVI-D cable and have connected it up directly into PC and monitor. However, there still seems to be an issue where the monitor does detect something, but it wants to go into Power Saving Mode, and stay there. Tried to restart PC but this didnt help either. Is there something im missing here?

I had a similar issue, only it didn't go to start and then jump right back into power saving mode; it kept looping and going back and forth. The hard drive started like it was starting Windows. That happened when I tried starting a temporary throw-together PC with my GeForce 4 Ti4200 in it (which made me falsely assume it was bad since the onboard via VGA and a GeForce 6800 GS via DVI both worked; not sure what was what and all, but I'm actually typing on the GeForce 4 now via DVI-D and it works without issue). I wish I had any guesses but I don't.

__________________
"The heart has it's reasons that reason knows nothing of."

[freak506]

Originally Posted by Princess Garnet

If you're using a VGA cable, then you don't need to worry about where it plugs in as it'll be analog anyway.

If your PC and monitor both have DVI, I suggest you just get a cable and use that.

A DVI to VGA adapter doesn't make a VGA cable become a DVI cable. The signal will only be as good as the lowest denominator. You need a DVI cable (not a VGA cable using a DVI to VGA adapter; that converts the physical layout only but not the digital workings) that is connected to a DVI output on your PC and DVI input on your display for it to be the better thing.

Otherwise the rest all falls back to the same sort of analog signal anyway, so if you're going to use VGA, I'd just hook it up that way on both ends to rid yourself of the redundant adapter.

Thanks for helping out, i was kind of clueless, i bought a vga to dvi-d adapter which thanks to you and testing it i now know doesn't work. and i recently purchased a dvi-d to dvi-d cable and changed my monitor from vga to dvi-d. thank you for posting this information.
-Jake

[SCHUMI_4EVER]

They just carry the analog signal over. A graphics card usually or at least back in the day didn't care as much as the monitor does so you could use the adapter on that side.

__________________

Intel Core2Quad Q9550 (2.83Ghz stock) | ASUS P5Q | 2x2GB Transcend JetRam DDR2-800 | ASUS ENGTX260\HDTP\896M | Windows Vista Home Premium 64bit SP1

The Champ has retired but may his Legacy live on FOREVER !!!!

No$GBA DS FAQ 2.0

Get it right fools! The glass is HALF-EMPTY, not half-full!!!

!!! WARNING: Emulation requires a brain !!! WARNING: Emulation =/= Piracy !!!

[SCHUMI_4EVER]

perhaps it's stuck in analog mode? That happened to me when I was naive and tried to use one monitor for 2 PCs by switching between Analog and Digital using the monitor's software to jump between comps but instead I just ended up locking my screen to Analog and permanent power saving, don't remember how I got it back to normal but it required quite same messing around with cables and connections and button presses.

__________________

Intel Core2Quad Q9550 (2.83Ghz stock) | ASUS P5Q | 2x2GB Transcend JetRam DDR2-800 | ASUS ENGTX260\HDTP\896M | Windows Vista Home Premium 64bit SP1

The Champ has retired but may his Legacy live on FOREVER !!!!

No$GBA DS FAQ 2.0

Get it right fools! The glass is HALF-EMPTY, not half-full!!!

!!! WARNING: Emulation requires a brain !!! WARNING: Emulation =/= Piracy !!!

[Khameleon]

Hmm, so I guess i just got to restart and fiddle with wires a few times for it to switch back to digital mode. I tried just connecting just the DVI-D wire from startup but it still used the Power Saving mode. Thanks for the advice anyways.

__________________
Khameleon WINS.....
FLAWLESS VICTORY
FATALITY

[n_w95482]

Originally Posted by Khameleon

Hmm, so I guess i just got to restart and fiddle with wires a few times for it to switch back to digital mode. I tried just connecting just the DVI-D wire from startup but it still used the Power Saving mode. Thanks for the advice anyways.

When you say you restarted, did you also try a full shutdown? I don't remember what nVidia cards do, but I know all of the ATi/AMD ones I've tried will shut down the TMDS transmitters during POST if nothing is using them. Usually a reboot clears it up, but in your case a full shutdown may be needed to reset the card.

__________________
Later.

[Khameleon]

Originally Posted by n_w95482

When you say you restarted, did you also try a full shutdown? I don't remember what nVidia cards do, but I know all of the ATi/AMD ones I've tried will shut down the TMDS transmitters during POST if nothing is using them. Usually a reboot clears it up, but in your case a full shutdown may be needed to reset the card.

Yes i did a shutdown too, also removed cables and wires from PC/Graphics card for around 10 seconds before reinserting with just the DVI-D cable. Still no dice.

__________________
Khameleon WINS.....
FLAWLESS VICTORY
FATALITY

[Princess Garnet]

Well, I don't know what you have to do since mine just seemed to not work for whatever reason in that configuration (I've no idea if it still wouldn't), and it had different symptoms, so... who knows? It's working now and the only difference is the video card is in a different PC.

__________________
"The heart has it's reasons that reason knows nothing of."

[Khameleon]

Ok, so after installing the latest driver from the LG website. the DVI-D cable does bring up a screen once the PC boots into the Desktop
(It remains in power saving mode from initial bootup checks till it actually gets into Windows XP).

Now, the screen seems very zoomed in, but I am able to move across the screen with my mouse and the screen will scroll across the desktop. My resolution is set at 1920 X 1080 native, but the only resolution that fits entirely into the screen is 1024 x 768. Anything higher and the screen will scroll if my cursor goes towards the edge, like how it would in an Age of Empires game. Is there a way to fit the screen properly, as my monitor doesnt support auto-adjust for DVI-D?

__________________
Khameleon WINS.....
FLAWLESS VICTORY
FATALITY

[Princess Garnet]

Originally Posted by Khameleon

Ok, so after installing the latest driver from the LG website. the DVI-D cable does bring up a screen once the PC boots into the Desktop
(It remains in power saving mode from initial bootup checks till it actually gets into Windows XP).

Now, the screen seems very zoomed in, but I am able to move across the screen with my mouse and the screen will scroll across the desktop. My resolution is set at 1920 X 1080 native, but the only resolution that fits entirely into the screen is 1024 x 768. Anything higher and the screen will scroll if my cursor goes towards the edge, like how it would in an Age of Empires game. Is there a way to fit the screen properly, as my monitor doesnt support auto-adjust for DVI-D?

Auto adjust is only something that applies to analog mode. Digital (DVI) doesn't need/use it.

By the way, for reference, what monitor are we dealing with here? Your GPU and OS might be helpful too.

I've heard of that first issue before, but I've no idea what causes it or how to get around it. Oddly, I think it was people who went from DVI to HDMI who had reported that one.

As for the second one, the only time I saw that happen was when I made some custom resolutions in the nVidia drivers; something about how it was using the higher resolution "internally", but showing it through less, and it'd do the scrolling you mentioned too. It had something to do with the timing/mode of the resolution/refresh rate. I have no idea what to suggest or why it would be cause it, but... perhaps you could try a wipe and reinstall of the drivers if you think it may help. It almost sounds a like an OS and/or driver issue (is 1024 x 768 actually filling the whole screen?), where maybe it's scaling 1024 x 768 as the "display resolution", but letting you select up to your native as the "internal" resolution.

It really should just be a hook up and work sort of thing. Unless you have a BIOS issue (either the PC BIOS or the GPU BIOS) causing the first problem in combination with a driver issue for the second problem, then I wouldn't know.

__________________
"The heart has it's reasons that reason knows nothing of."