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MP2010, ATI 5870, PA271W, DisplayPort -- anyone have this config?

N

Nebster

macrumors newbie
Original poster
Sep 20, 2010
12
0
I'm having a slightly different issue than everyone else who's having video issues in these threads. (Fun, fun!)

I have a single PA271W connected via a mini-DP to DP cable. This monitor works fine if I connected it to my iMac. On the new MP, it won't drive it at boot up.

Apple sent me a replacement 5870 card today that does the exact same thing.

The display does work via DVI.

Does anyone else have this configuration that could verify it will cold boot a single PA271W off displayport? If so, then I know my MP is defective and I'll have them swap it out.

Or, if you have other ideas I should try, by all means...

Thanks,

Ben

p.s. Get this: if I start the computer on DVI, unplug it after it's up, and plug in either displayport port... it fires up the monitor at 378x1440 pixels. That's not a typo -- 378 pixels across! ?!?!
 
MP 2010 Hex, 2 5770, 2 NEC PA271W, both wired to DP

Yes, with 2 ATI 5770 and 2 NEC PA271Ws with mini-DP to DP cables. Work great but same problems reported in the other thread: Sometimes don't wake up readily from sleep (very intermittent).

I would advise, call Apple.
 
Nebster said:
Monoprice. And the cable works perfectly with another computer. So we know it's probably okay.
Click to expand...

There's definitely compatibility issues with the Monoprice cable - with numerous reports here of this issue. If you replace it with the Circuit Assembly cable I'd be willing to bet it fixes your problem.

I had the same problem and fixed it by replacing the cable and I've seen reports from at least 2 or three other users with the same result.

Whether there's something wrong with the Monoprice cable is not clear, but it certainly doesn't seem to work with the new Mac Pro video cards.
 
benmcgruer said:
There's definitely compatibility issues with the Monoprice cable - with numerous reports here of this issue. If you replace it with the Circuit Assembly cable I'd be willing to bet it fixes your problem.

I had the same problem and fixed it by replacing the cable and I've seen reports from at least 2 or three other users with the same result.

Whether there's something wrong with the Monoprice cable is not clear, but it certainly doesn't seem to work with the new Mac Pro video cards.
Click to expand...

Hmm, that's really interesting/good to hear. I've ordered another cable (the OWC one instead of Circuit Assembly for faster processing) that will arrive Wednesday. I'll follow up here.

Can you point me to the reports from others? I did a lot of searching but never found anyone posting something like this...

Thanks,

Ben
 
Nebster said:
Hmm, that's really interesting/good to hear. I've ordered another cable (the OWC one instead of Circuit Assembly for faster processing) that will arrive Wednesday. I'll follow up here.

Can you point me to the reports from others? I did a lot of searching but never found anyone posting something like this...

Thanks,

Ben
Click to expand...

I'm one such other :p That's why I asked where you bought your cable ;)

While I didn't get mine from Monoprice, the place I got mine from were undoubtedly selling the same ones, i.e. they had on them written: E301195 AWM STYLE 20276 80C 30V VW-1 PAK HENG

My problem with them was that whenever the machine was booted from a cold-start, all 3 of my monitors wouldn't receive a signal - only fixed by having the DVI monitor plugged in and then plugging in the DP monitors.

So i bought the cables from CA. It's all fixed - no dead displays on a cold boot.

This is the thread where we came across this revelation.
 
Both my MiniDP->DP are NewerTech from OWC. I just ordered two from Circuit Assembly to see if that is the problem with wake from sleep. I'll report back in a few days...
 
BigAl55 said:
Both my MiniDP->DP are NewerTech from OWC. I just ordered two from Circuit Assembly to see if that is the problem with wake from sleep. I'll report back in a few days...
Click to expand...

Oops, glad you posted this. I'll cancel the one order and order the other. <rolls eyes and sighs deeply>
 
Vylen said:
So i bought the cables from CA. It's all fixed - no dead displays on a cold boot.

This is the thread where we came across this revelation.
Click to expand...

Thanks, both for noticing this thread and pointing me to yours. I read the first part of that thread, but then dismissed it because it was about other issues.

It's frustrating that there are a bunch of closely-themed issues that may or may not really have anything to do with each other. For example, it may be that the 5870 firmware or hardware has issues that make it more sensitive AND the crummier Monoprice cables just manage to exceed the threshold. Both may be cofactors in the problem we are seeing, and they may independently be part of some of the other problems other people are seeing.

Fun, fun. I plan to give AppleCare a lot more to chew on so they get this fixed. Ideally I'd like a more stable card that just works, since this hardware (monitor and cable) seems fine on plenty of other Apple devices.
 
Guys: I got the OWC cable (10feet), and having the exact problem Ben has reported in his first post.

FWIW, I am pretty sure that all of these cables come from the same garage in China.

Miguel
 
Nebster said:
Thanks, both for noticing this thread and pointing me to yours. I read the first part of that thread, but then dismissed it because it was about other issues.

It's frustrating that there are a bunch of closely-themed issues that may or may not really have anything to do with each other. For example, it may be that the 5870 firmware or hardware has issues that make it more sensitive AND the crummier Monoprice cables just manage to exceed the threshold. Both may be cofactors in the problem we are seeing, and they may independently be part of some of the other problems other people are seeing.

Fun, fun. I plan to give AppleCare a lot more to chew on so they get this fixed. Ideally I'd like a more stable card that just works, since this hardware (monitor and cable) seems fine on plenty of other Apple devices.
Click to expand...

Well, read the 2nd page.. that's when we all agreed that Monoprices cables are to blame. In particular, read the last post where Monoprice concedes to a possible active vs. non-active cable issue.

In which case, there seems to be no issue with the card and instead a cable implementation/type concern. However, this is speculative with no definitive response from anyone or hard data.

miguelito said:
Guys: I got the OWC cable (10feet), and having the exact problem Ben has reported in his first post.

FWIW, I am pretty sure that all of these cables come from the same garage in China.

Miguel
Click to expand...

Well, read off the printed text on the cable - is it the same as what I posted above?
 
to add to this thread I have had issues also with this config (MP2010, ATI 5870, PA271W, MiniDisplayPort->DisplayPort)
Cable ID: DisplayPort Cable E301195 AWM STYLE 20276 80˚C 30V VW-1 PAK HENG
 
Vylen said:
Well, read the 2nd page.. that's when we all agreed that Monoprices cables are to blame. In particular, read the last post where Monoprice concedes to a possible active vs. non-active cable issue.
Click to expand...

No no, I mean I /initially/ read just the first few posts and skipped it. Now that you guys pointed me to it, it addresses the issue. The "headline was buried." :)
 
VideoFreek said:
Yes, typing this on my NEW :D 2010 MP hexacore with a 5770 connected to my PA 271W via NEC's DP-DP cable and this. Has only been up and running for an hour or so, but so far so good.
Click to expand...

Can you clarify whether you have:

1) Any issues with boot up (with your PA271W connected to the miniDP)?

2) Any issues with sleep / waking from sleep?
 
^^^^

No and no. The system boots fine, and I've tested both display sleep and computer sleep. So far, no problems at all.
 
Cables!...

I just replaced the OWC/Monoprice DP/MDP cables with Circuit Assembly cables and I don't appear to be having any wake from sleep issues. I've been testing it repeatedly over the last 2 days....

So, it doesn't look like it's the video card(s)...
 
BigAl55 said:
I just replaced the OWC/Monoprice DP/MDP cables with Circuit Assembly cables and I don't appear to be having any wake from sleep issues. I've been testing it repeatedly over the last 2 days....

So, it doesn't look like it's the video card(s)...
Click to expand...

Could you post back the cables ID info for us Just for the sake of clarity
 
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