Problems with Matrox Hub?
Having issues when using external displays through Matrox Hub.
Is anyone else having this problem?
MacBook Air, OS X Mountain Lion (10.8.2), external display, mirroring
On the Matrox forum (http://forum.matrox.com/ds1/) in the DS1 section, others are mentioning a similar issue. It seems Matrox is working on a potential fix, and one user seems to think it is an Apple Thunderbolt display driver issue.
They have a workaround for some monitor, have a look this http://forum.matrox.com/ds1/viewtopic.php?t=264.