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No dual display with Sapphire 7750 on 10.8.3

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carambah

carambah

Joined
Sep 22, 2012
Messages
2
Motherboard
10.8.3
CPU
i 2500k
Graphics
Sapphire Radeon 7750 Low Profile / GMA3000
Mac
  1. 0
Classic Mac
  1. 0
Mobile Phone
  1. iOS
Hello there


Configuration:
Motherboard: Gigabyte ga-h67n-usb3-b3 with HD3000
Video: Sapphire Radeon 7750 (Low Profile, 11202-10-20G)
Mac OS X: 10.8.3 (last Chimera)


Parameters:
GraphicsEnabler=No
Onboard VGA: Always Enable (Award BIOS)


Monitors:
Apple LED Cinema Display 27" (miniDP)
Asus PA246 24" (HDMI/DVI)


Everything works great while I decided to connect the second monitor. Second Monitor have a grey background with mouse only. How can I solve this problem?

Снимок экрана 2013-04-30.png
 
carambah said:
Everything works great while I decided to connect the second monitor. Second Monitor have a grey background with mouse only. How can I solve this problem?
Click to expand...
Sapphire HD 7750 Low Profile, DP and HDMI working
Edits:
1. dsdt, add Dashimaki framebuffer injection
2. ATI7000Controller.kext, edit Dashimaki framebuffer

Edits described in hd7750_dp/hdmi_v1.0.pdf attachment
Not working: HDMI audio and the working DVI connector disables DP (edit not documented)

Screen Shot 2013-04-30 at 11.24.06 PM.pngScreen Shot 2013-04-30 at 11.25.02 PM.png
Screen Shot 2013-04-30 at 11.27.02 PM.png
 

Attachments

  • hd7750_dp:hdmi_v1.0.pdf
    19.8 KB · Views: 687
Build 1
MAXIMUS VII IMPACT |  i7 4770K |  Radeon Other
Build 2
GA-Z97N-WiFi |  i5 5675C |  HD 6200
That looks to fix the problem I am having with my 7870...

Is there a place in the forum that explains how to do those edits? Completely new to this...

I know that I need the Chutoro Framebuffer here:

Personality: Chutoro
ConnectorInfo count in decimal: 5
Disk offset in decimal 608864
0000000 02 00 00 00 00 01 00 00 09 01 01 00 12 04 03 03
0000010 00 04 00 00 04 03 00 00 00 01 02 00 11 02 01 01
0000020 00 04 00 00 00 01 00 00 00 09 03 00 21 03 02 02
0000030 00 04 00 00 00 01 00 00 00 09 04 00 22 05 04 04
0000040 00 04 00 00 04 03 00 00 00 01 05 00 10 00 05 05
0000050

However, not sure how to go about the dsdt.aml edit nor the ATIController edit. Any help you can throw my way is better than what I have now.
 
Build 1
MAXIMUS VII IMPACT |  i7 4770K |  Radeon Other
Build 2
GA-Z97N-WiFi |  i5 5675C |  HD 6200
hey...

i have the same card for testing purposes
got it working with HD3000 and Airplay @ 10.8.5

but i cant get audio over HDMi / DP :(

has anybody hints tips for me please?

Greetings
 
HtPC-Mac
GA-Z87MX-D3H |  i5 4670 |  GeForce GTX 660
thx a lot !

after many hours i had no success.

i have returned my 7750 and buyed a Gigabyte GTX 660 OC @ebay.

With MaciASL patch the card worked with sound over hdmi but i need audio over DisplayPort but this is another thread .

best greetings
 
HtPC-Mac
GA-Z87MX-D3H |  i5 4670 |  GeForce GTX 660
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