Currently Being ModeratedDec 9, 2012 8:03 AM (in response to jourikupad)
is there nobody who can point me in the right direction? Has anybody had the same or similar problem?
If both monitors stop working at the same time, is it then fair to asume that the graphic card is broken?
Help would be much appeciated!
Currently Being ModeratedDec 9, 2012 8:11 AM (in response to jourikupad)
The 8800 cards have been trouble-prone. In particular, they get hot enough to cause the low temperature solder (used with surface-mount chips) problems. There are online procedures for baking them in your home oven to re-flow the low-temp solder. This sometimes buys you more time.
Many users have walked away from these cards and replaced them with Apple-firmware 5770 for about US$250. It is a substantial upgrade for not a huge amount of money, but it certainly is a pain that you have to consider this solution at all -- that the 8800 cards are not more reliable.Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
Currently Being ModeratedDec 9, 2012 9:05 AM (in response to Grant Bennet-Alder)
Thanks for the reply!
ok I´ve read a lot negative comments about the 8800-card...maybe I should try to bake it.
But do you think this is a graphic card related issue only, or do you think this problem could be related to other hardware?
If this is an obvious graphic card related problem, maybe it´s worth investing in a 5770...the 8800 is quite bad
Currently Being ModeratedDec 9, 2012 9:57 AM (in response to jourikupad)
The simplest test is to hold the Alt/Option key at Startup. This invokes the Startup Manager, whose code is all in ROM. it draws a blue or gray screen and then shows an Icon for each potentially-bootable Volume. If the screen stays black, you clearly have a graphics problem.
Whether you also have additional problems is very difficult to tell.
.Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
Currently Being ModeratedJan 30, 2013 11:45 AM (in response to jourikupad)
Soooo... did you ever figure this out? I have the same issue and would love to hear your status! Thanks!
Currently Being ModeratedFeb 1, 2013 1:57 AM (in response to jourikupad)
Yes the problem is solved!
I started by borrowing a friends graphics card and installed it in my Mac Pro, and both screens was working. I realized my 8800Gt was broken.
I baked the 8800GT in the oven, there is a lot of videos on youtube on how to do it, and it worked again!
But I was tired of my old 8800Gt which is slow and old, and I realized Nvidia has released drivers for Mac on almost every card. And the new OS 10.8 support by default almost all new Nvidia cards. So I bought a GTX670 card and installed, works perfectly!
Currently Being ModeratedFeb 1, 2013 4:54 AM (in response to jourikupad)
Did you have to shop for a card with Apple firmware, or card that had been flashed to Apple firmware, or did you buy an "off-the-shelf" standard model?
Do you get the startup screens, or does the screen stay dark until the login screen or desktop?Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
Currently Being ModeratedFeb 1, 2013 9:20 AM (in response to jourikupad)
I just bought a "off-the-shelf" standard model, Gigabyte GeForce GTX 670 OC 2GB RAM to be precise. Even though it requires one 6-pin and one 8-pin power cable (Mac Pro only support 6-pin) it´s not a problem, you can just use a 6-pin-to-8-pin adaptor. The power supply is well within limits, they put an 8-pin cable on the card if somebody wants to manually over clock the card, which is not a good idea if you got a Mac Pro, because then you´ll need to get an external power supply (the power from the Mac Pro is not sufficient).
I don´t get a startup screen, the displays remain black until the login screen. But that´s not a problem for me, if I want to boot on a different drive I just choose startup disk before restart.
So far, it works like a charm!
Currently Being ModeratedFeb 1, 2013 10:02 AM (in response to jourikupad)
Not just OC'ing a card but some programs and games can push a card and force it to use more power.
There are people using a splitter to take one 6-pin and connect the two 6-pin. EVGA and others do have 670's that only require 2 x 6-pin while some cards use 1x6-pin and 1x8-pin connector. And some people want/need a card with more than 2GB for better performance, 2.5-4GB for CS6 and other programs.
Currently Being ModeratedFeb 1, 2013 11:15 AM (in response to jourikupad)
Thanks for making that perfectly clear. Now users who want to use that card will know exactly what to expect.Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers