I'm feeling better about the x220 full-HD mod chip overall now that I've read more about it and watched some installation videos. there is one solder joint on a very tiny capacitor that still scares me and I need to get a finer soldering iron tip to do it properly. also I misunderstood the docking situation. I'll still be able to use an external monitor with my dock, but the *second* external monitor port (which my dock doesn't even have) will be non-functional because that's what the mod chip takes over. furthermore, someone developed a coreboot patch to configure the overridden display interface as the default display and turn off the original display interface that becomes unused after modding, which makes the whole setup "just work" without any strange quirks like an active display that does nothing.