Please forgive this question from a bygone age ... but I'm a film composer and have an old setup that I'm trying to resurrect for the first film project in a while. I'd really appreciate some help.
My old Mac Pro 3,1 (2008) works happily with OSX 6.8 (and Logic 9.1.6) and original HD 2600 XT graphics card. However I'm scoring a movie shot at 23.976 fps, (no longer possible to follow past modus operandi of firing MIDI TC to a Quicktime set up in an external MacBook - MIDI TC doesn't exist at 23.976 fps)
So I'm attempting to make a 3rd Monitor display the Quicktime movie by replacing the original card with a Sapphire ATI Radeon HD 5770 GDDR5 card :
This Radeon 5770 has 2 x DVI outputs / standard HDMI output / Display Port output. Using 2 x DVI outputs as as 2 main computer monitors ... the 3rd monitor comes out of DP port with cable running into HDMI on Panasonic LED Cinema screen ... all 3 monitors are 1920 x 1080. (I tried the HDMI port output from 5770 but seemingly no signal.)
All 3 displays have a picture and come to life in the following boot-up sequence :-
DP > HDMI lead and the 3rd screen now boots first (on external LED screen) but will only mirror the main screen. ("Mirror" option in System Prefs is turned off) When looking at Display arrange window in system prefs there are only 2 screens ... yet the 3rd monitor does now boot up before my 2 main computer monitors?
Does anyone have any idea how to make 3 displays turn up in System Prefs Arrangement Window as 3 independent screens ? I've tried zapping PRAM but wonder if my intention to run a 3rd screen is not possible with this card?
Any thoughts would be much appreciated. Thanks Richard
My old Mac Pro 3,1 (2008) works happily with OSX 6.8 (and Logic 9.1.6) and original HD 2600 XT graphics card. However I'm scoring a movie shot at 23.976 fps, (no longer possible to follow past modus operandi of firing MIDI TC to a Quicktime set up in an external MacBook - MIDI TC doesn't exist at 23.976 fps)
So I'm attempting to make a 3rd Monitor display the Quicktime movie by replacing the original card with a Sapphire ATI Radeon HD 5770 GDDR5 card :
This Radeon 5770 has 2 x DVI outputs / standard HDMI output / Display Port output. Using 2 x DVI outputs as as 2 main computer monitors ... the 3rd monitor comes out of DP port with cable running into HDMI on Panasonic LED Cinema screen ... all 3 monitors are 1920 x 1080. (I tried the HDMI port output from 5770 but seemingly no signal.)
All 3 displays have a picture and come to life in the following boot-up sequence :-
DP > HDMI lead and the 3rd screen now boots first (on external LED screen) but will only mirror the main screen. ("Mirror" option in System Prefs is turned off) When looking at Display arrange window in system prefs there are only 2 screens ... yet the 3rd monitor does now boot up before my 2 main computer monitors?
Does anyone have any idea how to make 3 displays turn up in System Prefs Arrangement Window as 3 independent screens ? I've tried zapping PRAM but wonder if my intention to run a 3rd screen is not possible with this card?
Any thoughts would be much appreciated. Thanks Richard
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