Has anyone managed to turn on 2 monitors and the native screen of an HP ProBook 6465b laptop or similar?

Question

Iron

For example, they showed that Asus ZenBook works in this mode (2 monitors and a native screen). It all depends on the hardware and drivers, and this (HP ProBook 6465b) laptop has one (no integrated graphics) AMD Radeon HD 6520G GPU.
Somewhere on the official website, a message flashed that up to 5 monitors can be connected to this laptop. The docking station has a pair of duplicated DVI and DP connectors, to which 1 or 2 monitors are connected, but the main screen always turns off, even with a DP connection. VGA on the docking station also, apparently, is included in the system of dual outputs, the combination with DVI + DP + VGA gives a choice of only 2 monitors, without the main one. Two DPs have not been tried, and with DP + DVI, only 2 screens out of 3 are always offered. The native screen + additional screen can work.
There is a mini-DP on the case (also not tested) and VGA. Perhaps with some fantastic configuration of cables and drivers, it will actually turn on. But at what? Maybe you meant another version of the integrated video card? But higher than 6520 is not stated.
The answer to this question would make it clear how this model or its configuration is limited.
In particular, such a limitation was found. The power supply of the docking station (90W) periodically "does not pull" the load from 2 DVI cables (period from a month to 20 minutes; ends Windows with an error related to the video card driver), but works stably with DVI + DP.
HP ProBook 6465b Notebook PC Review - www.notebookcheck-en.com/Obzor-noutbuka-HP-ProBook...
HP ProBook 6465b Notebook PC - Overview and Features -h10010.www1.hp.com/wwpc/us/en/sm/WF06a/321957-3219...

Answer 1

I remember struggling with this on the 8760w. To do this, I had to connect 1 DVI monitor, 1 DP monitor through the docking station. Then all three worked. As we found out, both cables should be active, because a monitor was connected via a docking station using a DP-> DVI converter - it didn’t work (because the DP-DVI adapter was passive, because the active one cost a lot more.)