Help needed on Gigabyte H170M-D3H and AMD Radeon R9 270 Graphics

[skartha]

Hi I am new to OSX environment since for long I had been using Linux. I switched to Mac last month, installed OSX Sierra on my fresh PC comprising of Gigabyte H170M-D3H motherboard, Skylake i7 6700 Processor, 8 GB DDR4 Memory and AMD Radeon R9 270 4GB (2 DVI and 2HDMI out).

 

I downloaded ( a friend of mine, actually) OSX Sierra 10.12.3 from the App Store and build a USB Installer using ##### and did the post installation with #####. The installation went fine but my display card shows 4 MB size only and nor am I able to share the desktop to other displays. The other issue is with the sound. I have tried nearly all of the trouble shooting that has been given across various Mac forums to no avail. I have used patched kext of AMDRadeonX4000.kext to partial success in a sense that I was able to get the needed resolution but still desktop sharing was not possible.

 

After all this some guy say that flashing the vbios may do the trick. Is it possible?

 

I am totally at loss now and think I will have to switch back to Linux if nothing works.

 

Thanks in advance

[SavageAUS]

Your best bet now that you have a semi working system is to redownload OSX (if network works) and create your own CLOVER USB.
You will need to know the audio codec of your motherboard but that's pretty straight forward to get working, as for AMD gfx I have no clue, I use Nvidia. I'll post links shortly.

 

Unless im wrong your LAN should work OOB.

Your audio is Realtek ALC892 which should work with THIS and THIS and after checking HERE you can use layout 1, 2, 3, 5, 7, 92, 99.

As for gfx i see some good results HERE.

Trial and error is the best way, always make sure you have a USB drive with Clover on it.

 

Sent from my SM-G930F using Tapatalk

[Cyberdevs]

Hi I am new to OSX environment since for long I had been using Linux. I switched to Mac last month, installed OSX Sierra on my fresh PC comprising of Gigabyte H170M-D3H motherboard, Skylake i7 6700 Processor, 8 GB DDR4 Memory and AMD Radeon R9 270 4GB (2 DVI and 2HDMI out).

 

I downloaded ( a friend of mine, actually) OSX Sierra 10.12.3 from the App Store and build a USB Installer using ##### and did the post installation with #####. The installation went fine but my display card shows 4 MB size only and nor am I able to share the desktop to other displays. The other issue is with the sound. I have tried nearly all of the trouble shooting that has been given across various Mac forums to no avail. I have used patched kext of AMDRadeonX4000.kext to partial success in a sense that I was able to get the needed resolution but still desktop sharing was not possible.

 

After all this some guy say that flashing the vbios may do the trick. Is it possible?

 

I am totally at loss now and think I will have to switch back to Linux if nothing works.

 

Thanks in advance

Hi there,

Flashing your vBIOS is not necessary, besides you might end up bricking your graphic adapter and some times it doesn't change the device ID (in some cases it works) which is needed to get the graphics adapter to work fully in macOS, so DON'T flash it unless you know what you are doing!

 

Using clover's built-in VBIOS loader might help you to get the graphic adapter working and you can also spoof your Graphic adapter's ID to use the R9 270X's ID which works natively in macOS.

 

for more information about spoofing the device ID look here: https://clover-wiki.zetam.org/Configuration/Devices#devices_fakeid

 

for audio follow the links SavageAUS sent you.

 

and for desktop sharing if your ethernet doesn't work out of the box, make sure you have compatible kext for ethernet which is AppleIntelE1000e.kext and works perfectly fine with macOS.

 

you need to add the AppleIntelE1000e.kext to EFI\Clover\Kexts\10.12 where you installed the clover bootloader or System\Library\Extensions.

 

Using clover configurator to mount and edit EFI partition is the easiest way.

 

Good Luck.

[MaLd0n]

Read the rules about TobyMac!