OTOY Forums

Does anyone have external GPU/thunderbolt in Os X El Capitan running?
having no luck.

thanks
Allan

I have successfully upgraded a Macbook Air to El Capitan and have an external Thunderbolt PCIe chassis running x2 GTX 780 working. I had to disable System Integrity Protection before modifying the kext files, since rootless no longer works with El Cap:
http://osxdaily.com/2015/10/05/disable- ... -mac-os-x/

thanks for helpful info! =)

Glad to contribute in any little way.

What I would really like to clarify is the info I've read elsewhere that Yosemite and above can only recognise 2 graphic cards. My Thunderbolt chassis has the space and power for 4 full sized cards, but I've been holding off on adding more due to this issue that I've read.

Anyone able to verify this?

Has anyone had any luck with this?

https://github.com/goalque/automate-eGPU

thanks
Allan

mustardseedsg wrote:Glad to contribute in any little way.

What I would really like to clarify is the info I've read elsewhere that Yosemite and above can only recognise 2 graphic cards. My Thunderbolt chassis has the space and power for 4 full sized cards, but I've been holding off on adding more due to this issue that I've read.

Anyone able to verify this?

That applies to all except the nMP, I could not get more than 2 eGPU on my rMBP or a friends iMac, but on the Pro i got 4 with the exact same set up.

It may have to do with the way they map the PCIe lanes to the thunderbolt port as the nMP has 6 ports and a 40 lane cpu, others have a 16 lane and 2 ports there may not be enough resources to enable more than 2.

Thanks for the update Philiiplakis. Heartbreaking.

Just to confirm, were the rMBP and iMac you tested using Thunderbolt 1 or Thunderbolt 2?

Gidday,
I appreciate your tip re El Cap

I am also trying to upgrade my Macbook air to work with my external PGUs

When I try to go rootless I get:

Peters-MacBook-Pro:~ peta$ csrutil disable; reboot
csrutil: failed to modify system integrity configuration. This tool needs to be executed from the Recovery OS.


I have Cuda Driver 7.5.20
And WebDriver: 346.03.02f02
Looks like the Distribution file in the WebDriver package no longer needs Flat Package editor to change:
<script>
function InstallationCheck()
{
if (!validateSoftware()) return false;

return true;
}

This is already correct.... does that agree with yours as well?

thanks for any input

P3taoctane,

Yes you have to reboot into Recovery mode else you cannot disable SIP. I'm no expert either so I simply followed the steps listed in the site I linked:

1. Reboot the Mac and hold down Command + R keys simultaneously after you hear the startup chime, this will boot OS X into Recovery Mode

2. When the “OS X Utilities” screen appears, pull down the ‘Utilities’ menu at the top of the screen instead, and choose “Terminal”

3. Type the following command into the terminal then hit return:
csrutil disable; reboot

4. You’ll see a message saying that System Integrity Protection has been disabled and the Mac needs to restart for changes to take effect, and the Mac will then reboot itself automatically, just let it boot up as normal

Don't forget to follow the rest of the instructions should you wish to re-enable SIP.

Thanks mate.
Yep was able to go into recovery mode and turn it off.

I have been successful before but of some reason my nvidia card re not showing up.

are these the text files you are changing?

Kext Files:


/System/Library/Extensions/NVDAStartup.kext/Content/info.plist

/System/Library/Extensions/IONDRVSupport.kext/Content/info.plist


/System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAController.kext/Content/info.plist

ADD:
On each .kext file look for sections with
<key>CFBundleIdentifier</key>
and add
<key>IOPCITunnelCompatible</key>
<true/>
just before </dict>


I notice El Cap does not have ONDRVSupport any more.

If you have a cheat sheet that you did with drivers and steps... I'd love to see it mate.

Thanks for any tips.

Peter