Hint for Maemo Leste Raspberry Pi 2 and Droid 4 programmers:
I still waiting new Pi2 version, so I tested with Raspi and Motorola Lapdock 100 and 500 and I found that internet has wrong information about settings.
Right information about Raspi-settings:
/boot/config.txt:
hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=81
hdmi_drive=2

And no any hdmi boost, you might broke device with boost.
So Motorola Lapdocks resolution is 1366x768/60hz and 500 Pro gives wrong answer if you ask from device. And 500 Pro works only that resolution +/- some hz.

But here is main point for this post:
So I don't know sure, but that resolution can be only HDMI-output resolution what Droid 4 really has. Probably that information gives some starting point for working HDMI-output with Leste.