FrameBuffer Help Asus HD7970-DC2-3GD5

[kmifflin]

I'm looking for some help on getting all 6 outputs working on my HD7970-DC2-3GD5
I've gone thru a couple guides, and although adding FBName Junsai does change which 2 monitors are working. Patching the Framebuffer seems to have no effect. I'm running 10.11.2

Below is how far I've gotten. I've attached a copy of the gpu bios

Clover
Under Graphics I've set
<key>FBName</key>
<string>Junsai</string>
and
<key>ATI</key>
<true/>

Under KernelAndKextPatches I've set
<key>ATIConnectorsData</key
<string>000400000403000000010001120403010004000004030000000100012205040200040000040300000001000111020103000400000403000000010001210302040004000004030000000100011000050500040000040300000001000120010606</string>
<key>ATIConnectorsPatch</key>
<string>000400000403000000010001110201030004000004030000000100012103020400040000040300000001000112040301000400000403000000010001200104060004000004030000000100012205050200040000040300000001000110000605</string>

 

[Fl0r!an]

I've read positive reports about a 7970 Eyefinity card by just using the default RadeonFramebuffer. Doesn't this work for you?

 

[kmifflin]

I've switched <key>FBName</key><string>Junsai</string> to <key>FBName</key><string>Radeon</string>
and I still only get 2 displays working correctly, while the other 4 displays show that they are detected with the correct monitor name, but are black.

 

[Fl0r!an]

Are you using active DP adapters or a true DP connection on your 4 DP ports? This is a hardware requirement for AMD Eyefinity.

 

[kmifflin]

Are you using active DP adapters or a true DP connection on your 4 DP ports? This is a hardware requirement for AMD Eyefinity.

Yes 4 Active DP to DVI adapters, 1 straight DVI, and 1 DVI to HDMI adapter.
All 6 outputs work perfectly under window 7 & 10

 

[kmifflin]

I feel that I'm doing something wrong in the following key's.
<key>ATIConnectorsData</key>
<key>ATIConnectorsPatch</key>

I've also tried the a R9280X-DC2T-3GD5 card that I have. And I can also only get two displays working.
editing the ATIConnectors Data & Patch lines don't seem to have any effect.

 

[Fl0r!an]

I'd suggest updating to 10.10.5 first, normally Eyefinity should work without injecting an edited framebuffer.
I verified this with my R9 280 and a HD 7870, both can drive 3 displays OOB.

 

[kmifflin]

I'd suggest updating to 10.10.5 first, normally Eyefinity should work without injecting an edited framebuffer.
I verified this with my R9 280 and a HD 7870, both can drive 3 displays OOB.

I'm already past 10.10.5 and I'm running 10.11.2. Is El Capitan my problem?

 

[Fl0r!an]

Whoops, sorry, I read 10.10.2.
I'll look into your framebuffer patch when I find the time.

 

[kmifflin]

Whoops, sorry, I read 10.10.2.
I'll look into your framebuffer patch when I find the time.

Thanks
The only major change I've made since the original post is I've updated the MotherBoard BIOS and GPU BIOS.
I used the Asus UEFI updater which worked fine, accept I had to change PCI ROM Priority from UEFI Compatible ROM in the BIOS to "Legacy ROM" for the machine to boot properly. I still have 6 displays working in windows and 2 working in OS X, and 4 just showing black.

I've attached the new VBIOS.