I have an adapter that attaches to the VGA lead and into the base unit
ferrari wrote:One can only guess with the info you've provided. In order to diagnose the problem, you're going to have to make the effort to swap out or test the PC, cable, and VGA-input of your monitor with different hardware. Can you connect the display to another PC? Does your PC have a discrete graphics card? Maybe it is not seated properly, or maybe it has failed.
dandnsmith wrote:Don't worry about the comment about 17" monitors - that sounds like a bit of an attempt to sell more expensive leads. Any suitable lead should work, given the correct connection types.I have an adapter that attaches to the VGA lead and into the base unit
This bit worries me - does that mean you don't have standard 15-pin VGA connectors at both TV and PC? Any converter could be the cause of trouble.
Wikipedia wrote:As well as digital signals, the DVI connector includes pins providing the same analog signals found on a VGA connector, allowing an analog VGA monitor to be connected with a passive plug adapter
PCNetSpec wrote:There is nothing strange about having a DVI-I interface on the graphics card, and the use of a DVI --> VGA adapter:
http://en.wikipedia.org/wiki/Digital_Visual_InterfaceWikipedia wrote:As well as digital signals, the DVI connector includes pins providing the same analog signals found on a VGA connector, allowing an analog VGA monitor to be connected with a passive plug adapter
The adapter is passive (doesn't do anything, other than a straight pin to pin pass through), so is *unlikely* to be the cause of the problem... unless you've bent a pin
The black blanking plate, as you suspect, is probably covering a VGA (D-sub 15) interface for an "onboard" (built into the motherboard) graphics card.
Enabling the onboard graphics card usually requires the removal of the "add-in" graphics card, and/or *sometimes* a change to a setting in the BIOS.
There is a possibility that (if the BIOS/CMOS battery has ever fully discharged) the BIOS has been reset to enable the onboard graphics card rather than the add-in card.
ferrari wrote:Yes, as PCNetSpec has mentioned you have a DVI-I connector. A discrete graphics card is a separate card that plugs in to the motherboard (inside the PC). Integrated or on-board graphics is built in to motherboard.
TheWizardofOdds wrote:When you say the adapter is passive, do you mean the VGA lead or the erm, adapter that plugs into the base unit, PCNetSpec? I noticed that the adapter at the base unit has a small nut detached from either the base unit or the adapter itself. There is one attached to the adapter and one attached to the metal blanking plate, they were both fixed to the same thing originally, I don't know which though, neither seems to want to budge?
TheWizardofOdds wrote:I take it the add-in card must produce better quality or it would just be a case of connecting to the 'black plate' connection?
TheWizardofOdds wrote:I'm beginning to think it's the 'nuts' attached to the adapter or the metal plate, not being attached properly or broken, as when I used the TV monitor I couldn't get any graphics, I then moved the adapter about at the back and the graphics came up immediately. At the moment I'm using the original monitor with no problem at all?
TheWizardofOdds wrote:If I was to take off the black cover and attach the VGA would that be a problem?
PCNetSpec wrote: OK, now I'm confused... I thought you said the monitor didn't work?
PCNetSpec wrote: Does the "TV Monitor" connect to the DVI to VGA adapter?
Does the "Original Monitor" connect to the DVI to VGA adapter?
PCNetSpec wrote:One other suggestion... if you've been wiggling the cables about whilst they are connected to the back of your PC, it might be a good idea to check the add-in card is seated properly in the motherboard.
PCNetSpec wrote:Anything's possible
Try adding a vesa mode as a kernel boot parameter, such as
Other common vesa modes can be seen here:
http://en.wikipedia.org/wiki/VESA_BIOS_ ... de_numbers
It would be helpful to know what the exact (working) graphics resolution is when your system is running properly.
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