328115208 Posted October 18, 2014 Share Posted October 18, 2014 Late 2013 15" Macbook Pro GT750M ＋ GTX780@16Gbps-TB2 (AKiTiO Thunder2 without riser) AKiTiO Thunder2 is not big enough for ]GTX 780 get in. So I bent the box of AKiTiO TB2 Anyone knows how to disable GT 750M? I cannot use eGUP in the inner screen. Do I need to modify the EFi? And in the Win8.1, Iris Pro is disabled, I cannot use inner screen with GTX 780. Using OSX 10.9.5. ------------------------------------------------------------------------------------------------------------------------------------------ 12/06/2014 Some New Stuff 1 Quote Link to comment Share on other sites More sharing options...
Sachin10 Posted October 18, 2014 Share Posted October 18, 2014 I don't think anybody has found a solution to use the internal display with the 15" MacBook Pro + GTX 750M. But you have a great setup to use with an external monitor. Quote Link to comment Share on other sites More sharing options...
Tech Inferno Fan Posted October 18, 2014 Share Posted October 18, 2014 I don't think anybody has found a solution to use the internal display with the 15" MacBook Pro + GTX 750M. But you have a great setup to use with an external monitor.Yes, Apple firmware does not enable the iGPU in Windows. Without the iGPU you can not engage NVidia Optimus' internal LCD mode.I've elaborated on how some fairly technical mods needed to enable the iGPU on this system at http://forum.techinferno.com/enclosures-adapters/7205-us%24200-akitio-thunder2-pcie-box-16gbps-tb2-59.html#post109786. Quote Link to comment Share on other sites More sharing options...
euqlaog Posted October 18, 2014 Share Posted October 18, 2014 Now we have the first proof that Mid 2013 MacBook Pro with GTX750M + eGPU enables the external monitor on OS X. Did you use these steps to enable it?http://forum.techinferno.com/implementation-guides/6088-%5Bguide%5D-2011-13-macbook-pro-gtx660%4010gbps-tb1-sonnet-ee-pro-win8-1-osx-10-9-1-a-2.html#post87145Mark said here that with the Late 2013 15" 750M + OS X, an additional reboot was required sometimes. There does not exist an eGPU solution for Mid 2014 Iris Pro Only model with OS X. I have tried to enable external monitor via eGPU many ways without success. I wonder how the dGPU affects this issue? For those who are considering whether to choose a model with the dGPU or Iris Pro only, should keep this in mind:- Iris Pro only -> internal screen Optimus support on Win8.1, black screen output to external monitor on OS X (someone who knows there is workaround, please say)- GTX750M -> no internal screen Optimus support on Win8.1, accelerated external monitor on OS X Quote Link to comment Share on other sites More sharing options...
328115208 Posted October 18, 2014 Author Share Posted October 18, 2014 Now we have the first proof that Mid 2014 MacBook Pro with GTX750M + eGPU enables the external monitor on OS X. Did you use these steps to enable it?http://forum.techinferno.com/implementation-guides/6088-%5Bguide%5D-2011-13-macbook-pro-gtx660%4010gbps-tb1-sonnet-ee-pro-win8-1-osx-10-9-1-a-2.html#post87145Mark said here that with the Late 2013 15" 750M + OS X, an additional reboot was required sometimes. There does not exist an eGPU solution for Mid 2014 Iris Pro Only model with OS X. I have tried to enable external monitor via eGPU many ways without success. I wonder how the dGPU affects this issue? For those who are considering whether to choose a model with the dGPU or Iris Pro only, should keep this in mind:- Iris Pro only -> internal screen Optimus support on Win8.1, black screen output to external monitor on OS X (someone who knows there is workaround, please say)- GTX750M -> no internal screen Optimus support on Win8.1, accelerated external monitor on OS XI do modify 3 kext. And the external monitor with GTX 780 does not work every time.When external monitor using GTX 780 does not work, I disconnect the TB2. Then the OSX 10.9.5 crashed and restarted itself.Then external monitor works. Is it harm for my laptop, when I disconnect the TB2 without shutting OSX down? Quote Link to comment Share on other sites More sharing options...
euqlaog Posted October 18, 2014 Share Posted October 18, 2014 I do modify 3 kext. And the external monitor with GTX 780 does not work every time.When external monitor using GTX 780 does not work, I disconnect the TB2. Then the OSX 10.9.5 crashed and restarted itself.Then external monitor works. Is it harm for my laptop, when I disconnect the TB2 without shutting OSX down?Thanks for you clarification. You can try also just selecting restart from the main menu as Mark did. Some thunderbolt devices are hot-pluggable, but eGPUs are not. Disconnecting the TB cable will cause system crash and restart, I don't think it harms your hardware. The same can happen, when Mac goes to sleep mode and eGPU turns off. I found an interesting note from Apple regarding new iMacs and Mac mini (Late 2014) with Boot Camp:"The iMac (Retina 5K, 27-inch, Late 2014) and the Mac mini (Late 2014) support “hot pluggable” Thunderbolt devices using Windows 8 or 8.1 (both as 64-bit only)."Thunderbolt ports and displays: Frequently asked questions (FAQ) Quote Link to comment Share on other sites More sharing options...
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