Display/graphics failure on Mac Pro

[celegans]

Hello,

I have a year old Mac Pro (early 2008) which suddenly developed a display problem last week after being off for a couple of weeks while I was traveling.

The display (an LG 22") is blank (black) and does not detect a signal when the MacPro starts, or when it is running. I know the MacPro is running l, because I can screen share from a laptop and run programs as usual (the window showing the MacPro in the lpatop screen is then apparently set for 1280x768, I think). I tried to move the ATI Radeon graphic card to a different slot and even put a borrowed Apple graphics card in the teh same slot (an another one) with no success.

It looks like a logic board problem, but I was wondering if any others have had similar experience or have advice about testing/fixing this before I take it in and pay $$ at the Apple store.

Thanks in advance,

celegans

 

[Cindori]

Perhaps your screen is broken?

Try it with your laptop.

 

[dieideeistgut]

Running a MacPro1.1 here. Had this Problem with a flashed 2600 ATI Card which worked perfect for about 2 years. Switched back to the 7300GT and had no problems since then anymore.
I realy think it's a Mainboard issue. Noticing USB Failures on Boottime. Current method to fix it: Just let the Mac sleep instead of switching it off. Maybe you know a fix other than swaping the MB (which makes NO sense). Cheers.

 

[celegans]

Re: Display/graphics failure

Hello all,

Thanks for the suggestions. Its not the screen because the laptop shows up fine when connected to the same screen. I agree with dieideeistgut that it is likely to be a MB problem, because a swap wioth another graphics card did not fix it. MAc info (under apple menu) quits when you click on the graphics information item. It looks like a visit to the apple store will be necessary.

celegans

 

[dieideeistgut]

I agree with dieideeistgut that it is likely to be a MB problem, because a swap wioth another graphics card did not fix it.

Well, thats different here, changed to the 7300 and the bootups are fine for now. Getting a X1900 next week, maybe i know more then. i dont want to know how expensive the new board would be...

 

[dr34mr]

I also have this issue with my MacPro1,1.

I'm running a quad core 2.66 Ghz with 8GB RAM and a X1900XT.
Has done it interminantly for a while, normally i just unplug from the wall for 15 secs and then plug it back in then it boots fine. The system is running normally (Apart from no video output) because i can remote desktop in at every runs fine. One the other hand, the other day it took almost 3 hours to get it to start up.

Have tried reseating the RAM and video card, wiping the PRAM, and another display adaptor. No of which fix the problem

 

[sparkie7]

Hello all,

Thanks for the suggestions. Its not the screen because the laptop shows up fine when connected to the same screen. I agree with dieideeistgut that it is likely to be a MB problem, because a swap wioth another graphics card did not fix it. MAc info (under apple menu) quits when you click on the graphics information item. It looks like a visit to the apple store will be necessary.

celegans

TIME for a new card. The 4870