LCD monitor and DVI cable

sykocus · January 17th, 2003, 01:34 AM

I recently bought a LCD monitor (HP L1815) which has a standard VGA input and a DVI-I input. It came with two cables. A regular VGA type and one DVI on one end and VGA o on the other. My video card (GF4 4600) has a DVI out so i went on ebay and bought a DVI-D cable and plugged it in, but nothing happens (the monitor goes to sleep mode).

Is my cable bad or do I need a different kind?

I've done some research and found out there are different DVI cables but from what I understand a DVI-D cable will work on a DVI-I plug since it supports both digital and analog. But i want to make sure before i spend more money.

Thanks for any help you can give.

Peter M · January 17th, 2003, 06:06 AM

Yes, DVI-I outputs on graphics cards have both the analog and digital copy of the same display signal. They take either a DVI-D cable from a digital device, or a DVI-VGA adapter that feeds the analog signal into a legacy device.

Now if your screen stays blank, you might
(a) have to push a few buttons on the panel to make it use the DVI input,
or (b) figure out why your graphics card doesn't detect the device on the DVI channel correctly. It might be a problem with the graphics card's BIOS, or incorrect plug&play "EDID" data in the display panel

sykocus · January 18th, 2003, 03:44 AM

I've tried changing the imput on the monitor. it says 'selected imput not availible' i guess i'll look into the video card...

have any tips on what to look for? or where to look for it?

sykocus · January 18th, 2003, 08:41 PM

got it to work!!! i installed in dirvers and when i rebooted i had the DVI-D cable plugged in, nothing came on the screen til windows loaded but now it works. Thanks.

ctan6611 · October 19th, 2003, 12:44 PM

Hi sykocus,
I have the same problem which unable to get DVI-D cable to work. It has no display at all during POST. May I know what driver you installed you get it work? Is it LCD panel driver or graphic card driver?
You said it works after windows load, you mean you don't see anything during POST as well until all windows fully load?

Any reply would be appreciate.

tx,
ctan6611

Peter M · October 19th, 2003, 01:12 PM

Drivers won't help during POST, obviously. So either your graphics card's BIOS does not auto detect the panel's timing requirements correctly, or the display panel itself is declaring them incorrectly. Either case is thinkable.