Is Matrox Powerdesk installed on both and configured correctly? Open up Poweredesk in the one that isn't working properly and Check to make sure that Multi-Display Setup is in stretched mode.

Just got RH8 set up on my new P4 system. I have a Matrox G450 dual head setup going - nice having 2 screens. Anyway, the issue is that I end up with artifacts from the first screen over on the second ...

Matrox Graphics has released its new series of PowerDesk 4.00 display driver for M-Series graphics cards, which now operate under Microsoft Windows 7. The newest driver features stretched desktop mode ...

MONTREAL, June 9, 2010 /PRNewswire/ — Matrox Graphics Inc., the leading manufacturer of specialised graphicssolutions, today announced the release of the Matrox PowerDesk 4.00 displaydriver for ...

Matrox Graphics on Monday announced the availability of PowerDesk, desktop management software intended for use with its Graphics Expansion Module (GXM) devices on the Mac. It’s available for free ...