Mac pro 1.1, 7300GT, SL dual DVI problem

Discussion in 'Mac Pro' started by xgdlm, Aug 30, 2009.

  1. xgdlm macrumors newbie

    Aug 12, 2008
    Hi all,

    I'm running a MacPro 1.1 with a 7300GT. I have two 24" monitor plugged on each DVI output of the card. Eveything worked well in leopard.

    I tried Snow leopard with the same setup, and there is no way to have both monitor working. No signals reaches the second screen.

    Worst, once boot... If I run the "screen detection", both DVI signals are stopped.

    SL seems the both screen, I can see them in the system configuration. Both are stated as "connected", I can even "move" windows on the second screen but of course this is useless cause there is no signal.

    Anyone here having the same problem ? any idea to fix it ?

    Sorry for the english as I'm not a native speaker.

    Thanks in advance,

  2. seclusion macrumors regular


    Jul 15, 2007
    I have 2 22" screens on my 06 Mac Pro running SL no problems.
    Possibly maybe you need to pull the Video card our, clean and reseat it?
  3. xgdlm thread starter macrumors newbie

    Aug 12, 2008
    Interesting ... and are you using a 7300GT ?
    I'll give a try to pull out the video card later on, but I pretty sure this won't change anything, cause when I boot on my 10.5.7 partition both screen are up and running ... but I'll try ;)
  4. xgdlm thread starter macrumors newbie

    Aug 12, 2008
    Pulling out the card, even changing the slot didn't change anything.
    Dual DVI is still not working under SL and working as usual under leopard.
  5. xgdlm thread starter macrumors newbie

    Aug 12, 2008
    I just tried with two 19" ... on dual DVI works on SL. I pluged back the two 24" on only on screen is working. This is weird. If I boot on leopard with the two 24" everything works well :mad:

Share This Page