reboot the computer with egpu without external monitor -> the egpu is recognized by the graphic driver ~20/30% of the time. What works : - shut down the computer, plug the thunderbolt with egpu without external monitor, boot the computer -> the egpu is recognized by the graphic driver 100% of the time. I have exactly the same issue described in my last post. I have removed the PCI riser and put the GPU directly on the Akitio card which is now powered with the original barrel cable. Unfortunately the problem is not solved with 10.10.5 and the new driver 346.02.03f01. I hope this feedback can help and thank you again for your work. ps: i've made a custom connector between my PSU and the DC Plug of the akitio, so it's not the issue. 47inch retina + gtx 980 ti + gt750m as main GC.txt Whether i put the script in -a or -m mode (plug or not the egpu) my internal screen is not recognized anymore, i have to -uninstall the script so that everything come back to normal. Like always, when i try to launch the benchmark, it cause a kernel panic. But when i go to the system report i can see that in fact the dgpu is driving the internal monitor et the gtx 980 ti the external. The gtx 980 ti is recognized by the Nvidia Web Driver, and it's written in "about this mac" "monitors" that both screen as driven by the egpu. 47inch retina + gt750m.txt - If i plug my egpu with external monitor, it do the same glitches but it doesn't cause a kernel panic. I have tried the new script with the -a mode and i can notice several bugs with my macbook pro : - In the case i don't plug the egpu at startup the 750m is attributed in system preference as the main graphic card but my retina internal screen is recognized as a 47inches screen and it is not handled properly (glitches at startup, very slow etc.). I will write a thread soon in the Implementation Guides section once everything is in place. Now i'm going to work on making a box to be able to transport it safely. Now my GC is replaced and here is the setup at this state : I just wonder how it is possible to optimize the system to use at least 80% of the capability of the 980 TI ? Is it really limited by the 4 lane PCI Express 2.0 interface of the Akitio (which is 5.0Gbps) and is it possible to double it with a second thunderbolt cable ? There is a great article about the difference of efficiency between several configuration in PCI-E : GeForce GTX 980 PCI-Express Scaling | techPowerUp For a GTX 980 there is not so much contrast so maybe a GTX 980 TI manage more data than 5.0Gbps ? That being said, the result is still very good and it is so convenient to be able to use the dGPU for other operations on the internal screen ! I realize now that thanks to your script it is very easy to use a eGPU on OSX, even for a beginner. Here is the result in comparison to other results you can found here (Unigine Heaven 4.0 Benchmark Scores | TechPowerUp Forums ): Regarding the issue, i've realized that the GC was definitely the problem when i had tested the Akitio setup with a GeForce GTX 560 Ti and everything was working (unless the internal screen not recognized, an issue which come from the v0.9.7). The retina display switch automatically from Iris pro to the GT 750m. ![]() ![]() I have to boot with 1 monitor attached and then hotplug the second one into the graphic card but, after that, it works like a charm. ![]() Finally ! The script v0.9.6 is working perfectly, everything is very stable, i just can't boot with 2 external monitors.
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