I've been watching this thread for a while. Today, I took out my mimo UM-710 monitor that has been sitting in my desk drawer since I upgraded to 10.8.
My mac is running 10.8.2.
I installed the 1.8 drivers currently available on
http://displaylink.com/mac.
I have two normal monitors and the mimo UM-710 monitor. They are all working right now. Here's what I did:
1\ Download/install the drivers.
2\ Reboot.
3\ Log in.
4\ Plug in the mimo monitor and turn it on. At this point, the two normal monitors flashed blue like I'd expect but the mimo didn't work.
5\ Open System Preferences > Displays.
6\ Observe that there is a dialog for the mimo monitor but there wasn't a small draggable screen in the Arrangement tab.
7\ (here's the weird workaround) I change the rotation for the mimo monitor to be 180°.
8\ Content showed up on the mimo monitor and a draggable screen showed up in the Arrangement tab. It seems to work fine.
It also worked at 90° and 270°, just not at Standard rotation. Unfortunately, I never tried the rotation setting on 10.8 so I don't know if the OS bug fixes in 10.8.2 mentioned in this thread fixed anything.
Seems like the rotation triggers some kind of software scaling/transform that works around a bug. Now my monitor is happily connected to my computer and I have an ugly usb cable sticking out of the top of the monitor. Much better than leaving it in my desk drawer and getting more frustrated with DisplayLink as a company.
I hope this works for someone else!
I also hope that DisplayLink steps up and puts a notice on their website about compatibility problems with 10.8.*. A "Known Issues" post on
http://displaylink.com/mac would be a good start.