Displayport Connection Problems

[GraysonTheGamer]

I am so frustrated with this, I have searched the web for hours trying to find why my Displayport is not recognized.

It basically goes like this,
I have my Lenovo ThinkPad x220i hooked up to my main monitor via VGA this works fine but if I try to plug in my DisplayPort to DVI adapter to a second monitor the computer doesnt recognize neither the monitor or the cable.

I have tried things like booting with VGA disconnected and DP in,

Swapping monitors

Booting with nothing and then connecting DP but nothing works

PLEASE help!!!!!!

 

[Someone Somewhere]

The graphics card in that laptop (Intel HD3000) can only handle two simultaneous screens. You'd need to either disable the internal screen or unplug the VGA one.

The other thing is that the port may not be DP++, so might not be able to use DP-DVI cables.

 

[Shaun o]

I would say you have answered your own question.

The digital visual interface connector is for connecting a monitor that supports Single-Link DVI.

Note: The DVI connector provides a digital interface only.

This connector can be used with a computer that
supports DVI via docking only.

Going on that premises, the Dp link is also, or should be only for a Digital out put.
That means that the Dvi adapter is actually and Analog adapter.

Digital DVI adapters have a single flat pin at one side. Where as an Analog adapter has the addition of four pins that protrude around the main flat pin.

Also can the Dvi of the monitor support Digital Dvi, or Just analog DVI.
Or a combination of both types of signal.

It`s the adapter Dvi, (wrong type pin out)

Or the monitor Dvi port and if it can use a Dvi digital signal.

If there is no detection of the monitor at all.
It is likely a cross over from digital to an Analog Dvi adapter being used.

If all in one, and you know the monitor can handle digital Dvi input, running some devices via DP.

In the case of three monitors requires an Active DP cable and not a passive device to get a signal to the monitor. Check the adapter to see if it is listed as an active or passive type.

 

[GraysonTheGamer]

I would say you have answered your own question.

The digital visual interface connector is for connecting a monitor that supports Single-Link DVI.

Note: The DVI connector provides a digital interface only.

This connector can be used with a computer that
supports DVI via docking only.

Going on that premises, the Dp link is also, or should be only for a Digital out put.
That means that the Dvi adapter is actually and Analog adapter.

Digital DVI adapters have a single flat pin at one side. Where as an Analog adapter has the addition of four pins that protrude around the main flat pin.

Also can the Dvi of the monitor support Digital Dvi, or Just analog DVI.
Or a combination of both types of signal.

It`s the adapter Dvi, (wrong type pin out)

Or the monitor Dvi port and if it can use a Dvi digital signal.

If there is no detection of the monitor at all.
It is likely a cross over from digital to an Analog Dvi adapter being used.

If all in one, and you know the monitor can handle digital Dvi input, running some devices via DP.

In the case of three monitors requires an Active DP cable and not a passive device to get a signal to the monitor. Check the adapter to see if it is listed as an active or passive type.

Sorry but half-way through that post I got confused to if you were telling me or asking me something

 

[GraysonTheGamer]

The graphics card in that laptop (Intel HD3000) can only handle two simultaneous screens. You'd need to either disable the internal screen or unplug the VGA one.

The other thing is that the port may not be DP++, so might not be able to use DP-DVI cables.

How would I be able to solve this, sorry I'm a bit of a noob when it comes to graphical interfaces

 

[Shaun o]

Put simply, the display port is used for digital monitor output signals from the laptop.
When you connect a monitor Via the display port.

The Monitor or the video connection ports of it must be able to take a Digital video signal.

The blue D-type block known as 15 pin Vga for example produces and Analog signal.
The Display port produces a Digital signal.

So, if you intend to use a Display port adapter with a DVI connection on one end.
You must make sure that although the monitor has a DVI connection to it.
If it is intended for a Digital signal; or an Analog signal.

When I talk about a Dvi, It looks roughly the same.
But the internal wire connections are wired different in respect to the type of signal.
We refer to this on how a connector or adapter is pinned, or the amount of pins by looking at the end to know what type it is. a Digital cable or adapter, or an Analog.

Here is an example of the range of Dvi adapters cables ect.
Showing buy the pin layout if it produces a digital or analog signal for the monitor.

http://en.wikipedia.org/wiki/Digital_Visual_Interface

If you get the wrong adapter or pin type.

When converting an interface, such as display port to Dvi it is important how the Dvi end is wired and also if the monitor, or the Dvi port of it can except

A: Only and Analog signal via Dvi connection.
B: Supports Digital signal Input from a correctly pinned or wired cable to it.
C: Can use or Switch between both Analog and Digital depending on how the input cable is wired and pinned on the Dvi plug adapter end.

 

[GraysonTheGamer]

Put simply, the display port is used for digital monitor output signals from the laptop.
When you connect a monitor Via the display port.

The Monitor or the video connection ports of it must be able to take a Digital video signal.

The blue D-type block known as 15 pin Vga for example produces and Analog signal.
The Display port produces a Digital signal.

So, if you intend to use a Display port adapter with a DVI connection on one end.
You must make sure that although the monitor has a DVI connection to it.
If it is intended for a Digital signal; or an Analog signal.

When I talk about a Dvi, It looks roughly the same.
But the internal wire connections are wired different in respect to the type of signal.
We refer to this on how a connector or adapter is pinned, or the amount of pins by looking at the end to know what type it is. a Digital cable or adapter, or an Analog.

Here is an example of the range of Dvi adapters cables ect.
Showing buy the pin layout if it produces a digital or analog signal for the monitor.

http://en.wikipedia.org/wiki/Digital_Visual_Interface

If you get the wrong adapter or pin type.

When converting an interface, such as display port to Dvi it is important how the Dvi end is wired and also if the monitor, or the Dvi port of it can except

A: Only and Analog signal via Dvi connection.
B: Supports Digital signal Input from a correctly pinned or wired cable to it.
C: Can use or Switch between both Analog and Digital depending on how the input cable is wired and pinned on the Dvi plug adapter end.

Thanks, should my PC make the connection sound (duh-dah) when I plug in the Displayport?

 

[GraysonTheGamer]

Put simply, the display port is used for digital monitor output signals from the laptop.
When you connect a monitor Via the display port.

The Monitor or the video connection ports of it must be able to take a Digital video signal.

The blue D-type block known as 15 pin Vga for example produces and Analog signal.
The Display port produces a Digital signal.

So, if you intend to use a Display port adapter with a DVI connection on one end.
You must make sure that although the monitor has a DVI connection to it.
If it is intended for a Digital signal; or an Analog signal.

When I talk about a Dvi, It looks roughly the same.
But the internal wire connections are wired different in respect to the type of signal.
We refer to this on how a connector or adapter is pinned, or the amount of pins by looking at the end to know what type it is. a Digital cable or adapter, or an Analog.

Here is an example of the range of Dvi adapters cables ect.
Showing buy the pin layout if it produces a digital or analog signal for the monitor.

http://en.wikipedia.org/wiki/Digital_Visual_Interface

If you get the wrong adapter or pin type.

When converting an interface, such as display port to Dvi it is important how the Dvi end is wired and also if the monitor, or the Dvi port of it can except

A: Only and Analog signal via Dvi connection.
B: Supports Digital signal Input from a correctly pinned or wired cable to it.
C: Can use or Switch between both Analog and Digital depending on how the input cable is wired and pinned on the Dvi plug adapter end.

I also have the adapter outputting DVI-D Dual-Link into a DVI-D Single-Link cable then back into a DVI-D Dual-Link Monitor, should this be the problem?

 

[Someone Somewhere]

You probably won't be able to run the monitor at its full resolution, and might not be able to at all. Not sure.

That's probably the issue.

What's the monitor? Does it have an actual displayport input?

 

[Shaun o]

I also have the adapter outputting DVI-D Dual-Link into a DVI-D Single-Link cable then back into a DVI-D Dual-Link Monitor, should this be the problem?

It will depend on how big the monitor is in screen size, and its resolution.
A dual link Dvi-D is used for a monitor to obtain, if the monitor can display up to a 2560 x 1440

If the monitor supports the resolution above, then buy using a single link from a dual link, to a dual link you will not obtain the resolution.

This is because one Dvi-d has a maximum resolution, a dual Link doubles the amount of pins to achieve the intended maximum resolution the monitor can display at.

As an example: Link one 1280p
Link two 1280p.

1280 x 2 = 2560 resolution.

The Dvi-d must be the correct type all the way through connection.

Or the monitor cannot relay its settings to windows.

Or the laptop graphics card, to set a resolution table up to drive the signals to the monitor.

At the correct resolution, and display frequency in Hz.

When you connect a monitor cable, it has to be the right type, because it uses the cable to tell the laptop, windows, and the graphics chip used.
By relaying the settings or resolutions, and refresh rates it requires to display an image.
From a chip in the monitor.

You may here the sound of connecting a device in windows, but if the cable is wrong and it cannot relay the information.
It is why the screen stays black or can say no signal. or windows does not detect the monitor.
Via the video cable.

Dual link Dvi-D and a DVI-I to a Dvi-D will not give you a signal due to the nature of how each is pinned or wired.

DVI cables can be a single link cable that uses one TMDS transmitter or a dual link cable with two transmitters

You should not cross cable or pin types, TDMS differs in pins from a single to a dual setup.