The thread for this problem is now a year and a half old with 720 replies. It spans two different OS X releases, two major releases of Premiere with 3 or 4 additional .x releases from Adobe and here we are. Still no solution. Not even any public recognition of the problem from Adobe or Apple and therefore no formal commitment to ever solve the problem. Perhaps its time we stop looking for fixes and start asking for refunds? ... View more

Ive seen this problem on 3 different MacPro for the first 18 months we had them. Since updating to 10.10.4 I have not seen the horizontal lines or any GPU related glitches. I upgraded to 10.10.4 about 5 months ago. So far so good. Ive seen this issue disappear for a few months and return so I can't guarantee it solved the problem, but so far that appears to be the case. This is the longest Ive gone without seeing the issue return. ... View more

Green Lines on export are NOT a separate issue. It is a similar side effect due to the same cause. I've had green lines on export multiple times and it obviously ruined the render. Green lines on playback, not on playback, on export -- its all the same problem. ... View more

Thanks for sharing David. I concur 100%. In my 14 months or so going through two different 2013 MacPros, both with Dual D700s, I narrowed it down to heat issues with the GPUs as noted in my earlier posts. My Co-worker has the exact same machine and he has never had any issues, but he is not pushing the machine much and therefore it does not heat up like mine does. I've installed smcFanControl and am monitoring things more intelligently now to gauge what temps I hit before I start having issues. I was up to 135 degrees Fahrenheit yesterday but no signs of green lines yet. When I do see them, I will crank up the fan speed to cool off the machine and see if they go away. Now the question is.. is this a GPU problem? Or a problem with how the new MacPro's are monitoring/implementing the GPUs? I believe there were a few reports on this thread of people with non-Apple machines with D700s reporting problems -- so that would indicate it is strictly an AMD problem. A better question yet would be, is AMD aware of this and how are they going to fix it? Or when will they issue the re-call? Im not holding my breath. It will likely be years before either company acknowledges the issue if they ever do at all. The good news is, knowing what the problem is, we can control the issue to some degree by monitoring the temps and implementing measures to keep the computers cool. ... View more

TiberiusJones, Thanks for sharing.. However, I believe what you did is a work around, not a solution. In other words, you found a way to avoid the problem, not to solve it. If h.264 indeed does work 100% as you have reported, that would be great if the only codec we ever needed was h.264, however, h.264 has limitations that won't work for everybody all the time. For example, h.264 does not allow for alpha channels or 4k resolution. Also bear in mind that these horizontal lines show up on the monitor even when no video is playing (at least for me). And they are not always isolated to the video playback area. Sometimes they appear over windows and bins etc. So the problem, whatever it is, is not merely a codec issue. Perhaps using a specific codec might mitigate the problem, but the problem nevertheless remains and in all instances points to something related to the GPUs. ... View more

Thanks for sharing your experience. I also have multiple monitors. Two of them are mDP to VGA, one is mDP to DVI and the fourth is my 4k TV which is connected via the HDMI port (straight HDMI connection to Tv). I also believe this is indicative of a larger issue. My first 2013 nMP I had to return to Apple because of this problem. Now, 10 months later, the second nMP is exhibiting the same symptoms of horizontal colored lines (even in renders). If this were just a monitor connectivity issue, it would not be showing up in the renders. This is a GPU issue with new MacPros imho. The flaw in the GPUs are agitated and show symptoms when the GPUs are pushed -- such as in the case of a multiple high-res monitor display or GPU rendering. The first 10 months I had this second nMP I had no issues. When the issues began, is at the same time I started leaving the MacPro on 24/7 for days at a time doing heavy 3D rendering in Blender. Then the horizontal lines started showing up again in Premiere etc. My own hypothesis is that there is a hardware flaw in the GPUs brought on by increased heat (hence showing up with lots of rendering). As with most problems, Adobe says its an Apple problem and Apple says its an Adobe problem and nobody takes responsibility or even attempts to make a moderate effort to isolate or resolve the issue. OMS_AK, I know you said you resolved the issue by disconnecting your other displays. Can you or anyone confirm that replacing the monitors with display port monitors would actually fix the issue? If all of your 3 displays (or mine) were replaced with display port connections, it would be interesting to see if that resolves the issue. However, if my hypothesis is correct, it will still not resolve the issue due to the strain on the GPUs. ... View more

The original post was March 7th, 2014, today is March 17th, 2015. Here we are a year later with no resolution. No fixes from Apple, no fixes from Adobe. Nothing. No response, is a response. I purchase a nMP last year and immediately saw these horizontal lines. Apple replaced the Mac Pro and things were fine for 10 months. Now the lines are back. They are on my playback monitor and they are in my renders. This is not a small issue. This issue effectively stops everyone with a nMP and Premiere in their tracks -- and yet, all we get from Adobe and Apple is the typical run-around. 'try dumping your cache,' 'try restarting the computer.' seriously? This issue is WAY beyond that. I need a solution NOW. And considering this has been going on for over a year and there is no solution, the solution is to dump the nMP and stay with Premiere, or dump Premiere and keep the nMP. There are NO other solutions, and given the long history of this issue, there likely will be no solutions. A grim outlook, but unfortunately a very real one. ... View more