This thread seems dead but thought I'd try to revive it since also would like an answer to this issue!
My setup is a HP 2170p that has one dp in the pc and then a port replicator that has another one.
Internal display is LVDS and then I have one HP ZR2440w with DP connection.
What I want is to be able to connect a third display together with internal and the HP one.
All the setups I have tried:
DP - DVI - LVDS
DP - VGA - LVDS
DP - DVI - VGA
DP - DPtoDVI(passiv) - VGA
DP - DPtoDVI(passiv) – LVDS
DP - DPtoDVI(active) – LVDS = Should work but does not.
DP - DPtoDVI(active) – VGA = Only one that works but not what I'm looking for.
After this I bought and active DP to DVI adapter and tried:
DP - DPtoDVI(active) - LVDS = This still doesn't work. Now intel config lets me choose 3 active monitors and config seems to believe all three monitors are working but only get display on one of the DP ones.
I did however manage to get: DP - DPtoDVI(active) - VGA to work but what I need is the internal display and both according to you and HP it should work.
Here is a document where HP says this exact configuration should work:
Most viewed solutions for HP ProBook 4540s Notebook PC - HP Support Center
with this addition:
"NOTE: In this table, display combinations with dongles are not mentioned. However, a DVI display can connect with a DP-to-DVI dongle, and an HDMI display can connect with a DP-to-HDMI dongle."
So my question, when are you going to solve this windows driver limitation since it's obvious it is a driver limitation when it works fine in Linux.
BR
Erik