I bought a HDMI to DP cable to connect my Raspberry Pi 2 to a screen with Display Port.
Unfortunately I get no output on the screen.
Is it possible to connect the Raspberry Pi 2 to a screen with display port using this cable? What would I need to configure to achieve this?
Note: I get video output on my TV while using a plain HDMI cable.
That cable is most likely a DisplayPort-to-HDMI cable not a HDMI-to-DisplayPort cable (mind the direction). While there are DP ports able to support HMDI signals (DisplayPort Dual-mode) HDMI does not support DP directly. Since HDMI data transmission is very different from DP there will be no simple (passive) cable that just re-routes some signal lines on the different connectors.
The DisplayPort signal is not compatible with DVI or HDMI. However, Dual-mode DisplayPorts are designed to transmit a single-link DVI or HDMI 1.2/1.4 protocol across the interface through the use of an external passive adapter that selects the desired signal and converts the electrical signaling from LVDS to TMDS.
and HDMI@Wikipedia:
DisplayPort ports can be made so that they are compatible with single-link DVI and HDMI 1.4.[200] Compatibility is achieved with DisplayPort Dual-mode ports, which are marked with the ++DP logo, using attached passive adapters.
So while these cables can connect a DP appliance to a HDMI display it's not possible to connect a HDMI appliance (such as the RPi) to a DP display.
You may try to force HDMI output by editing /boot/config.txt
hdmi_force_hotplug=1
hdmi_drive=2
