ThinkPad USB 3.0 Dock 0A33970 with 2560x1440 monitor

[tinkererguy]

My 2560x1440 monitor works fine on a desktop PC.

This dock (really more like a USB 3.0 to dual DVI adapter) works fine with my 1920x1200 monitor.

But this dock won't recognize my 2560x1440 monitor/the 2560x1440 resolution doesn't get detected. This problem happens with NVidia Optimus Mode and Discreet Video modes on my ThinkPad W520, and this happens with Windows 7 x64 SP1 or Windows 8 Release Preview.

Here's the USB 3.0 Dock listings:
http://blog.lenovo.com/products/dock-is-launched
http://shop.lenovo.com/us/itemdetail...62D739642CFC27
http://support.lenovo.com/en_US/prod...DocID=PD023761

and the Displaylink chip inside is from the DisplayLink DL-3900, described here:
http://www.displaylink.com/usb3/index.php
http://www.extremetech.com/deals/130...ort-replicator

and should be capable of driving up to 2560x1600 resolutions.

I've tried the latest (and only) Lenovo driver from the CD that shipped with the unit June 2012, which matches the V10606 version available online here:
http://support.lenovo.com/en_US/guid...DocID=UM014961

I also tried 6.3 and 7 B1 from here:
http://www.displaylink.com/support/downloads.php

Any ideas?

I will attempt to upload Displaylink diagnostics from Windows 7 x64 SP1 and Windows 8 Release Preview, in case this will help.

A similar post appears at Lenovo's support forum here:
http://forums.lenovo.com/t5/Options-...or/td-p/797413

Thank you!