Proph

@goalque You mean a SMC reset before I erase the HDD and reinstall OSX? I just erase the HDD and reinstall the OSX, is there a difference when I do a SMS reset just before reinstall? Im using Adaptare 36052 to split the 6-pin to 2x6pin for the GTX 970.

Yes tried another TB port and even tried to restore original AppleGraphicControl.kext with kextwizard. Still black screen after reboot. Dont know why I can reboot after hotplug the eGPU, even see the 970GTX in display but after shut down or reboot again I get stuck in the black screen.

@goalque ok I think Im done with my eGPU project for now, cant work with that black screen boot process thank you for your help anyway, I will watch this topic maybe there will be someone with the same problem who can find a solution best regards

@goalque -Did a clean install of OSX 10.11.3 -did comment lines 1076, 1077, 1078 and 1082 with #-changed the line 62 of the script to: config_board_ids=() -did chmod +x ./automate-eGPU.sh -sudo ./automate-eGPU.sh -sudo reboot -boot process hangs with default mode -force power off, unplugged the eGPU -after reboot with eGPU unplugged did hot-plug the eGPU -sudo ./automate-eGPU.sh -a -nvram tbs-options says <00> -sudo reboot -reboot works I see the GTX 970 in system report -sudo reboot -boot process hangs with -a mode -force power off, unplugged the eGPU -Restart without eGPU -nvram tbs-options says <00> -hot-plug eGPU -sudo reboot -boot process works, I see the GTX 970 in system report -sudo reboot -boot process hangs again.. . . . did the process a few times, the iMac boots only if eGPU is unplugged OR when I hot plug the eGPU and reboot

@goalque Output of (4) after restart with unplugged eGPU is the same - 0 automate-egpu-daemon The automate-eGPU-dameon.plist is in /Library/LaunchDaemons/ yes First restart also works with -m mode If i boot the iMac with the eGPU unplugged, I can connect the eGPU and reboot, then it works. But it never works when I restart from a successfully boot with the plugged eGPU. After black screen i have to force power off and do the power up process i described top.

@goalque Thx for response, here is the output (1) 10.11.3 (2) 15D21 (3) Mac-B809C3757DA9BB8D (4) - 0 automate-egpu-daemon Didn't change anything manually so far. Thx for your help!

Hi, I have a problem with booting my iMAC 5k (late 2015, i7, 27") when using Sonnet lll + GTX 970. After clean install of 10.11.3 el capitan I disable System Integrity Protection, download newest CUDA, plug in my Sonnet lll with GTX 970 installed and run automate-e-GPU (https://github.com/goalque/automate-eGPU ). I activate -a mode of the script and restart. First restart works fine, GTX 970 works but after another restart my imac gets stuck while booting with black screen. I know thats a common issue with eGPU but I tried all fixes I found, nothing helps. One thing that works is the power up process described here (https://www.techinferno.com/index.php?/articles/guides/2015-13-macbook-pro-gtx97016gbps-tb2akitio-thunder2-win81osx1010-tranj10-r2/) ----------------------------------------- Power up process: This is the power up process I always use to consistently have a successful boot without any black screen issues. 1) Have everything powered off 2) Connect thunderbolt cable to eGPU and MacBook 3) Power on the eGPU power supply (use a power strip with on/off switch) 4) Wait ~15 seconds 5) Power on the MacBook while holding option key 6a) Select the boot partition you want 6b) If you run into a blank black screen: - Force power off for MacBook - Power off eGPU power supply - Disconnect thunderbolt cable from MacBook - Power on the MacBook while holding option key - Boot into OS X, log in, and shut down - Go back to step 1 (there will be no black screen issues for at least the next boot up) - If you still are getting black screens after repeated tries then try a NVRAM clear (https://support.apple.com/en-us/HT204063) - Note that the NVRAM clear does mess with the changes implemneted by automate-eGPU. So you'll need to run 'sudo ~/Desktop/automate-eGPU.sh -skipdriver' to re-enable the changes - If the NVRAM clear doesn't help then try enabling -a mode with automate-eGPU by running 'sudo ~/Desktop/automate-eGPU.sh -a' ----------------------------------------- That process works one time but I dont want do do that whole process every time i start my imac Tried the NVRAM clear and automate mode of the script restart- stuck in black screen Also tried to make a backup of AppleGraphicControl.kext and replacing the backup after running the script, imac wont boot at all even without eGPU plugged in. When i boot without eGPU - no problem, when i plug in the TB connection after I booted, the GTX 970 is called Nvidia Chip Model, so that dont works neither. I just need the eGPU for CUDA, no video output from the GTX970 is needed. Can anyone help me? I would donate some cash for a working solution. Best Regards, Proph

Hi, I have a problem with booting my iMAC 5k (late 2015, i7, 27") when using Sonnet lll + GTX 970. After clean install of 10.11.3 el capitan I disable System Integrity Protection, download newest CUDA, plug in my Sonnet lll with GTX 970 installed and run automate-e-GPU (https://github.com/goalque/automate-eGPU ). I activate -a mode of the script and restart. First restart works fine, GTX 970 works but after another restart my imac gets stuck while booting with black screen. I know thats a common issue with eGPU but I tried all fixes I found, nothing helps. One thing that works is the power up process described here (https://www.techinferno.com/index.php?/articles/guides/2015-13-macbook-pro-gtx97016gbps-tb2akitio-thunder2-win81osx1010-tranj10-r2/) ----------------------------------------- Power up process: This is the power up process I always use to consistently have a successful boot without any black screen issues. 1) Have everything powered off 2) Connect thunderbolt cable to eGPU and MacBook 3) Power on the eGPU power supply (use a power strip with on/off switch) 4) Wait ~15 seconds 5) Power on the MacBook while holding option key 6a) Select the boot partition you want 6b) If you run into a blank black screen: - Force power off for MacBook - Power off eGPU power supply - Disconnect thunderbolt cable from MacBook - Power on the MacBook while holding option key - Boot into OS X, log in, and shut down - Go back to step 1 (there will be no black screen issues for at least the next boot up) - If you still are getting black screens after repeated tries then try a NVRAM clear (https://support.apple.com/en-us/HT204063) - Note that the NVRAM clear does mess with the changes implemneted by automate-eGPU. So you'll need to run 'sudo ~/Desktop/automate-eGPU.sh -skipdriver' to re-enable the changes - If the NVRAM clear doesn't help then try enabling -a mode with automate-eGPU by running 'sudo ~/Desktop/automate-eGPU.sh -a' ----------------------------------------- That process works one time but I dont want do do that whole process every time i start my imac Tried the NVRAM clear and automate mode of the script restart- stuck in black screen Also tried to make a backup of AppleGraphicControl.kext and replacing the backup after running the script, imac wont boot at all even without eGPU plugged in. When i boot without eGPU - no problem, when i plug in the TB connection after I booted, the GTX 970 is called Nvidia Chip Model, so that dont works neither. I just need the eGPU for CUDA, no video output from the GTX970 is needed. Can anyone help me? I would donate some cash for a working solution. Best Regards, Proph