some games not showing external DMD all of a sudden

[maquis]

Hi,  I have been using VPX for 2 weeks, I have a 2 screens desktop setup.  I have tested 6 games and all of them run perfectly, but one day, the external DMD not showing on 4 games.  I tinkered in the XDMD folder and somehow got 2 games DMD working.  But STar TREk LE and Xmen LE still don't load the external DMD.  When I alt tab on those games I saw a DMD window but just a blank screen with a black icon like the xbox symbol or something, and with letter "virtual DMD".  The DMD works fine on those games before, but it seems it's corrupted or something.  In other games, DMD works fine, no problem.

 

Thanks. 

 

Edit:  okay, when I alt tab on those games, I saw the "blank" DMD window on tool bar, nothing happened when I tab it, but when I right clicked it and click maximize, the dmd finally showed, but in FULL SCREEN stretch mode.  That's weird.  It seems the DMD is minimized when launched.   Any ideas how to fix this?  I just want the dmd launched in a normal size, normal aspect ratio.

Edited 1 hour ago by maquis