MacPro 1,1 GTX 750 detected as (null null) Display stays black

Discussion in 'Mac Pro' started by DebianJunkie, Apr 2, 2015.

  1. DebianJunkie macrumors newbie

    Feb 25, 2015

    I have MacPro 1,1 and upgraded to Yosemite 10.10.2 using the Efi 32-64 bit wrapper and a Samsung SSD. Problems begin w/ new Nvidia VGAs
    So I tested 2 GTX 750. First was MSI w/o the 6 pin power connector (newer energy eficient version of 750) N750-2GD5/OCV1 and Nvidia web drivers WebDriver-343.02.02f01_nhw
    The monitor stayed black and VGAs are detectad ass (null null) (see screens) and I got all the screenshots via Screenshare (For those who doesn't know its Mac's built in VNC server)
    I chose Nvidia drivers as main ones- still no signal
    The second I chose with the power connector Gigabyte GTX 750 GV-N750OC-2GI Also upgraded to newer webdrivers 343.02.02f04 but the result is the same.
    If I plug in an old GT 210 everything works and the vga is detected.
    I got the empression that GTX 750 or 770 was a safe bet but I can't keep buying them just to test them out. Forum and google didn't yield any answers
    Screen shots from imgur
  2. Fuchal macrumors 68020

    Sep 30, 2003
    I had the same issue, I was never able to get a GTX 750 to work.
  3. DebianJunkie, Apr 2, 2015
    Last edited: Apr 2, 2015

    DebianJunkie thread starter macrumors newbie

    Feb 25, 2015
    Did you also have 1,1 or a newer one?
    Edit: Why did you delete the info on 460? Does it work or not?

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