I need your help! I've bought HP ProBook 6470b laptop with i5-3210M CPU @2.50GHz and integrated Intel HD Graphics 4000, 4 GB RAM.
Running Windows 7 Enterprise 64bit SP1 Build 7601 with Intel graphics driver version: 188.8.131.5261
Can't connect 3rd display (using two HP LA2306x) neither with 2xHDMI, 2xVGA, or 1xHDMI and 1xVGA.
At the time I can use only two of them: One HP with laptops display or both HPs when laptop lid is closed.
When all the monitors are connected I can see them (below), but if I choose to etend second display, click Apply and Keek Changes - nothing hapens, same window appears (bellow).
Question: How the 3rd monitor should be connected? (it's written in intel.com what HP Graphics 4000 supports up to 3 displays)
Could you please verify that your system has the latest System BIOS update from HP available http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=5212923&... 120 here?
I am also have a Probook 6445b and having the same issue. Previously, I had a Probook 6445b with two HP Compaq LA2006x monitors connected; one monitor connected directly and the second via an HP USB Graphics Adapter (model # NL571AA). Upon attempting to configure the monitors in the same way with my 6445b, my laptop crashes presenting the 'blue' screen. When I attempt to connect without the adapter, the computer appears to see the 3rd monitor but will not connect. Any advice would be greatly appreciated.
Wanted to throw in my two cents on this and see if anyone has resolved the issue. I recently started as the new "IT guy" for a company and cannot get this same setup to work with two workstations that I rebuilt however I have 4 others with the exact same config and it works. Here is what I know:
The stations that work have the following setup:
Driver Revision Date: Dec 2012 (don't know where to find this)
(2) display port to DVI on docking station
(1) VGA on docking station
I believe the VGA needed because of the low frequency however the latest drivers from HP install version 184.108.40.20612 that has a date of April 2012, not Dec 2012 like the working stations have.
Win7 picks up the 3 monitor however nothing will display. I have forced the monitor to VGA input on the display that won't work.
I'm at a loss, did anyone figure this out?
Did you ever figure this out? :3
Have the same issues.
I know its 6 years later but mby you have something that can help me?
Im this "IT Guy" too and one of my customers have the same equipment you had 2015 and he want 3 monitors.
I allready do some Updates (graphic driver, bios, display driver)
- Same laptop
- Same dockingstation
- Same Cabel connections
If you want to support three monitors, the two external monitors must be connected to a single, native DisplayPort interface. These monitors can be connected using DisplayPort Daisy-Chaining (presuming at least one of these monitors actually supports this capability) or an MST Hub device with multiple monitor interfaces. In fact, DisplayPort Daisy-Chaining also utilizes a MST Hub. This MST Hub is located within the first monitor (the one connected to the system's DisplayPort interface) and it handles (and multiplexes) both the DisplayPort stream for the local monitor and the DisplayPort stream for the second monitor (made available via a second DisplayPort connector).
It can be costly to purchase DisplayPort monitors that contain the MST Hub necessary to support Daisy-Chaining. It is, in fact, more cost-efficient to purchase an external MST Hub device that provides the two (or three) connectors needed for the monitors. Versions of these devices are available supporting both DisplayPort and HDMI monitors. Here are examples:
DP to 2x DP: https://www.amazon.com/dp/B084641DFB
DP to 2x HDMI: https://www.amazon.com/dp/B0845X7J72
From what I can see, the dock has two DP interfaces and I would presume that the dock provides the MST Hub that allows these two interfaces to be used simultaneously. I do not understand why this isn't working for you or the original OP. It is typical that the VGA and DVI connectors will use the same DisplayPort channel from the processor and thus only one of them can be used. I would say stay away from these connectors completely; use the DisplayPort interfaces.
Hope this helps.