3 display configuration requires your computer to have 1 Display port or 1 embedded display port as minimum requirement. I see the docking station or port replicator is providing you with 1 display port, please bear in mind that docking station and port replicators are considered video adapters therefore, the multimonitor functionality might be affected.
First of all, thanks for your help.
Can you do me a favor ?
Can I ask some questions ?
I'm using 'DELL E/Port Plus for E Family'.
The port replicator has 2 display ports, 2 DVIs, 1VGA.
And I got an answer from DELL.
DELL support team said it supports 3 monitors (1 built-in + 2 external).
But you said, " I see the docking station or port replicator is providing
you with 1 display port ..."
1. Do you mean there's a problem with the port replicator ?
2. Can you tell me what it's based on ?
Is it based on the output of 'DxDiag.txt' file ?
If you provide the proof of port replicator problem, I can trasfer it to DELL support team.
1. Not really, the port replicator seems fine, I mean the video port configuration.
2. In order to make the Intel graphics controller work with a 3 display configuration your computer (laptop) requires to have 1 Display port or 1 embedded display port as minimum requirement, which is something that your computer does not have according to its specifications, http://www.dell.com/downloads/global/products/latit/dell_latitude_e6430_spec_sheet.pdf, the port replicator is replicating something that is not in your computer therefore there is not 3 display configuration.
I had a phone call with one of DELL engineers.
He confirmed serial numbers of my laptop and port replicator.
He said that the DELL Latitude E6430 laptop + E plus port replicator (which I have) supports 3 monitors.
Is there any way to check if there's a problem with Intel HD Graphics 4000 driver ?
There is no problem with the driver, liked mentioned before in order to make the Intel graphics controller work with a 3 display configuration your computer (laptop) requires to have 1 Display port or 1 embedded display port as minimum requirement, please note the picture below;
For further reference Configuration 3 Displays FAQ for Graphics Drivers.
You are totally wrong.
The root cause was in the Intel HD Graphics 4000 driver.
Finally I solved the 3 monitors issue myself.
Now I am able to see 3 monitors.
- downgrade the Intel HD Graphics 4000 driver. (10.18.10.4176 -> 220.127.116.1140)
- set the 'Active Display' as '3' in 'Intel Graphics and Media Control' -> 'Multiple Display'.
Happy New Year !
I am glad to hear that you were able to resolve your issue. Your feedback is important to us and I thank you for taking the time to share your outcome.
Hi are you going to fix this problem?
I was using driver version 18.104.22.16840 with 3 monitors (Built In Display & 2 X Display Port).
I updated the driver to 10.18.10.4176 and I only have the option to output to 2 monitors at the same time.
3 Monitors are detected but one has to be disabled at any one time.
Please look into this problem, we can't use the latest drivers because of this issue. @Amy_Intel
Please create a new thread, fill out the following form Default level information for reporting Graphics issues and post it on the new thread, follow my instructions closely so we can isolate your case.