What 30" monitors will work with old MacPro 10.6.8?

Thanks for trying to help. I'm not sure if you answered my question or if I'm confused...

I havent bought a graphics card - the MacPro still has the original default one installed. I only bought a used adapter. The original (used) card you linked to is sold out...

Money is tight and I'm reluctant to shell out $130 for a graphics card that may or may not help one iota to fix the problem - which apparently got fixed (temporarily) with the replacement adapter.

MacPro is 2 x 2.26 GHz Quad core Intel Xeon / 32GB memory. IDK what year because the display currently won’t come on, but I’m connected to the MacPro via my iMac, if you know a way to look at its system info from the iMac.

The Cinema Display has been cutting out for years - suddenly going black with no rhyme or reason. I replaced the adapter once before and that seemed to fix it for a year or 2, but it started again last year. Then I found I could unplug the cord with the racetrack shaped plug from the adapter, and it would come on again when plugged back in. Strangely, this changes the brightness to half bright — and the keyboard brightness key won’t change it. So each time it comes on again, I have to hold the brightness button on the side of the display.

In the last few months its started going black multiple times in a row, or alternatively turning gray with a million pixels. Reconnecting that cord has always worked until last week, and now it won’t come on at all. Part of it might be the plug hole in the adapter isn’t as tight as it was with all that plugging unplugging…but I think its the adapter, and will have another (used one) next week.

I'd love to think the display isnt the problem - it cost a fortune.

Ps - The My subscriptions column seems to have populated now - when I checked yesterday there was nothing. But now it shows this same thread twice, and only one other post, although I’ve posted in Apple forums (every now and then) for decades with the same handle...

Pps - I still have and use long defunct Adobe Director, as well as own the full Adobe Creative Suite 6 (back when you could own CC, and not have to pay rent). Once you upgrade beyond 10.6.8, I learned those apps won’t work..

So I got a confirmation its a 2009 MacPro, and a few graphic cards to choose from as well from MacSales. Not sure how the card figures into "fixing" the issue (temporarily) each time I unplug that cord, but will look at graphics cards as a possible solution after I get the replacement adapter.

Grant Bennet-Alder wrote:

What would make quite a performance difference, if you have not already done so, is a switch to an SSD boot drive. You can easily install a modest-sized SATA-3 speed drive on a special sled in any drive bay, and use that as your boot drive. having an SSD as the boot drive speeds up everything, even if you place your work files on other drives.

Thanks will keep that in mind. Its relegated to just a hobby station ATM - a really old one - so reluctant to put more $$ into it beyond keeping it alive. =0)

The replacement adapter worked to fix the monitor "cutting out" — for a week. But now the same issue has begun again - the screen just goes to black randomly on its own, multiple times in a row.

I'd like to know if an expensive (min. $130) new graphics card (like this one) is the best bet for fixing this, given that the adapter replacement did work for a time?

The card is the original NVIDIA GeForce GT 120 / 512MB VRAM

$70 for the used adapter and 2 wks later, same problem - intermittently cutting out thats fixed temporarily by unplugging and replugging the racetrack shaped plug from the adapter, and then holding in the button on the monitor to restore the brightness (that doesn't work via keyboard). On the previous adapter(s) - this latest is #4 - this unplugging/replugging eventually stops working.

Now it seems with the replacement adapter I'm back to square one. Don't know if I just have a series of bad luck getting faulty adapters, or something else is making them fail....

For now I can use the monitor and keep unplugging/replugging it until this adapter fails too. Sometimes it runs for hours without failing, other times like today, I had to unplug replug it 10 times...

Its just an ugly cycle and I had hoped maybe it wasnt the adapter causing it after all.

This is why the title question of my post seems to be the only remaining step, unless someone can offer another solution....