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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Graphics Display Problem with New Mac Pro & Premiere

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Michael McCaffrey

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I am getting weird lines across the screen. They tend to mostly appear in the upper left portion of the screen but sometimes in random other places as well. They appear for a frame several times a second (flickering) so its pretty annoying. This occurs on red and non-red footage so it doesn't appear to be specific to Red media.

screenglitch.png


I have the 8-Core 64GB RAM version of the Mac Pro with the Dual D700s, Premiere 7.2.1. I have three monitors hooked up via 3 mini-display adapters (since none of these monitors are thunderbolt). The lines only appear on the video playback monitor. This is a new issue, it did not appear with the old mac pro I had ever. The monitors are also the same.

Any ideas about what might be causing this?
 
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What adaptors are you using? I see glitches similar to this quite a bit with DisplayPort to Dual-Link DVI converters. Or it could be frame buffer corruption as Eric says. Do you have another proper way to monitor from the onboard HDMI port or via HDMI/SDI out of a BMD or AJA box?
 
Im using Apple mini-display port to DVI adapters. I do not believe they are dual link though because those 4 pins are not present on the side. Frame buffer corruption sounds about right. I switched the monitor arrangement around in display preferences and it seems to have helped. If the issue persists I will try the HDMI output instead.
 
Try using a different combination of adapters to the monitors and see if the issue follows a specific display or adapter.
 
I used to have the same issue after recent Mavericks update on a 12-core. Apple confirmed that there are some bugs with multiply non Thunderbolt displays configuration. Try using Apple USB-powered MDP to dual-link DVI adapters... I didn't have time to play with the issue, but it seems to be some sort of a software bug.
 
Unless he's running 2560x1440 or higher resolution, there's no need for the dual-link converters. Especially since they need to be powered and cost $90 instead of $9. And if there's an issue there in the displayport signal, it will probably pass through or cause glitching on the conversion anyway.

OSX 10.9 on the new Mac Pros seems to have some issues with displays anyway -- I think Apple is still trying to work out some of the kinks with the whole multiple Thunderbolt2 / displayport convergence thing. I can't let my nMP go to sleep with my 4K Dell monitor attached. It almost never wakes from sleep and usually crashes trying. Funny though, if I unplug the Dell 4K and just run with an old Dell 30" via MDP-DVI-DL converter, it all works just fine.
 
Blair S. Paulsen said:
Agree that Mavericks is still wonky with multiple displays. Here's to hoping 10.9.3 puts most of this to rest…

Cheers - #19
Click to expand...

Not yet... I'm expecting a couple more beta seeds before release, though. 10.9.3 does at least let my use my 24" Dell 4K properly, other than sleep issues.
 
Yes, Jeff, good point about adapters and resolution, my fault. BTW I have the same trouble with MBP, sometimes it wakes with external display settings messed up, but mostly it dies...
 
That's kinda scary. Hadn't run across that discussion yet…
 
Interesting. Any others on here noticing that? I wonder if it's a D700 issue or all DX00 cards.
 
I have this issue too. It's not a New Mac Pro Problem it is a Adobe and AMD problem. I talked with Adobe for a long time on the phone and they are aware of it and working of a fix with AMD. If you do "software only" on your renders or preview the issue will go away.

I told Adobe to unlist the D7000 from their list of support graphics cards until the issues is solved because it is really false advertising. If it doesn't work 100% it shouldn't be listed.
 
well in Resolve it will always exhibit because it always use the gpu. It is not only in Adobe, so it's not an Adobe problem.
the D700 gpu's beeing part of the new macpro i think it's a bit strange to say it is not a problem with the mac but only with the gpu which are from AMD. Apple is changing the computers, so I guess it's an apple problem.

cheers,
antoine,
 
Had this exact problem in Resolve on a 12c/D700 machine. Tried everything, including full re-install of the system. Nothing worked. Went away immediately when Apple replaced the unit for us. It's faulty hardware. Odd that it's so common. Maybe they got a bad batch of VRAM or something.
 
I'm going with the faulty hardware theory. I haven't seen this problem on any of the nMP systems I've worked with and I'm using Premiere and Resolve almost daily. And I'd also subscribe to Chris's comment on the bad batch of VRAM. This is one huge reason why the better GPUs, especially those with large amounts of RAM on them and aimed at the pro markets, will use ECC memory. The D700's in the nMP should have been K6000 or W9000 GPUs, but Apple went with the R9 280X and stacked more RAM on them than we see in PC land, 6GB each. Non-ECC..
 
Yup, bad hardware. Funny thing is I know three others with 8 core systems and D700s. All had the same issue and Apple replaced the GPUs.

It's not a software issue, it's not an Open CL issue, it's just a hardware issue. I got my 8 core traded in for a fully specced 12 core and couldn't be happier. Supposedly there's some bad D700s out there in the first run.
 
I had the unlucky distinction of being the first person in an Apple Store on the East coast to get their nMP serviced - and that included swapping out the D700s. Haven't had a problem since. Bad QC on the D700s, it seems.
 
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