Tony Goldenfeld

Q: 20-inch cinema display on 2008 MacPro 3,1

I have a MacPro 2008 3,1 model running 10.10.3; I've upgraded the video card to a Radeon R9 270x (flashed professionally for  use). It's fast. Very fast. However, on boot-up, I get the EFI screen which then goes black as soon as OS X loads. If I disconnect the display and reconnect...hey presto! everything works (screen not black).

 

Is there a work round so I don't have to do this physical disconnection/reconnection?

 

The video card is this one (see below) which also shows the display type.Screen Shot 2015-06-03 at 14.17.29.jpg

Posted on Jun 3, 2015 6:30 AM