AMD Radeon HD 6750M on Mojave

[izo1]

Hey guys, seems like Apple discontinued Mojave support.

 

Dosdude figured out a way to enable it, but you're forced to Intel HD....and AMD is not accelerated.

 

http://dosdude1.com/mojave/

 

Is there a solution to this?

[Onestyle]

19 hours ago, izo1 said:

Hey guys, seems like Apple discontinued Mojave support.

 

Dosdude figured out a way to enable it, but you're forced to Intel HD....and AMD is not accelerated.

 

http://dosdude1.com/mojave/

 

Is there a solution to this?

Compare S/L/E between High Sierra and Mojave, and you'll notice that certain AMD Radeon kexts are missing. I'm having the similar issue with my Thames radeon gpu, and so far, with a simple copy and paste of missing kexts ( in my case for my GPU those are AMDLegacySupport, AMDLegacyFramebuffer, AMDRadeonX3000 and AMD6000Controller) from 10.13 to 10.14. GPU is then correctly read, the gpu ram is read, but still no QE/CI due to Mojave not being able to load AMDRadeonX3000 while booting, meaning no acceleration.  I've just started to play around with Mojave, so these are just my first impressions of this problem. But considering that they were dropped for a reason ( no metal support for those cards ) there's not really lots of hope that QE/CI will ever run, unless someone does some extreme work on it. 

Edited August 29, 2018 by Onestyle

[noisegate]

On 8/29/2018 at 8:38 PM, Onestyle said:

Compare S/L/E between High Sierra and Mojave, and you'll notice that certain AMD Radeon kexts are missing. I'm having the similar issue with my Thames radeon gpu, and so far, with a simple copy and paste of missing kexts ( in my case for my GPU those are AMDLegacySupport, AMDLegacyFramebuffer, AMDRadeonX3000 and AMD6000Controller) from 10.13 to 10.14. GPU is then correctly read, the gpu ram is read, but still no QE/CI due to Mojave not being able to load AMDRadeonX3000 while booting, meaning no acceleration.  I've just started to play around with Mojave, so these are just my first impressions of this problem. But considering that they were dropped for a reason ( no metal support for those cards ) there's not really lots of hope that QE/CI will ever run, unless someone does some extreme work on it. 

 

I’m in the same boat with my HD 6870. I installed the same kexts and Mojave is stuck when loading AMDRadeonX3000.

 

-v -x -s or ‘block kext’ won’t help. Any idea how to boot back inside Mojave while blocking the conflicting kext?

 

thanks

[Slice]

Boot to command line (-s) then
 

/sbin/mount -uw /

mkdir /off

mv /System/Library/Extensions/AMDRadeobX3000.kext /off

then reboot

[noisegate]

Thanks for the help. It was a fresh ish setup so I eventually reinstalled.

[iRoham]

any updates on this issue ? 

[Slice]

On 3/8/2019 at 1:29 PM, iRoham said:

any updates on this issue ? 

What issue? The card is not supported in Mojave.

[hardcorehenry]

On 3/8/2019 at 1:29 PM, iRoham said:

any updates on this issue ? 

Try this solution link.

[shrieken213]

On 8/28/2018 at 6:23 PM, izo1 said:

Hey guys, seems like Apple discontinued Mojave support.

 

Dosdude figured out a way to enable it, but you're forced to Intel HD....and AMD is not accelerated.

 

http://dosdude1.com/mojave/

 

Is there a solution to this?

 

No.

 

You're in the same boat as Nvidia users right now. There simply are no drivers, no plans to make new drivers, and no hack to make the AMD card work in Mojave.

 

Anything claiming to be a "solution" simply disable the AMD chip and run the laptop off the IGPU as you've already found out.

 

It's an old laptop. The chip is 8 years old. You could use an upgrade.