First, i'm running the latest Carbon nightly on my Razr HD.
Things that happened:
1) I plugged in the HDMI/USB and the phone mirrored onto the screen, however the mouse/keyboard didn't work and it wasn't charging the phone.
2) I removed the phone, checked the jacks and plugged it back in again. This time, the lapdock's backlight turned on, but nothing showed up on the screen. I ran an lsusb and it does show a device there (when i remove the usb it doesn't list anything).
I can't seem to get the phone to mirror again though. I've since rebooted the phone and tried a few other things, but i can't seem to replicate #1.
Anyone have a similar experience?