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HD6850M Mountain Lion


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#1
Lordadmiral Drake

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Hi guys, Lordadmiral Drake is back in the Radeon scene.

I got a new laptop for Christmas and have now set it up with Mountain Lion

It's an Acer Aspire 7750G with 2GHz Core i7 and AMD Radeon HD6850M card.

from red sock_bios_decoder I get:


BR039168.009:


Acer Compal JE70 HR Granville Pro DDR3 64Mx16/128Mx16 4CH


Subsystem Vendor ID: 1025

Subsystem ID: 50e

Object Header Structure Size: 199

Connector Object Table Offset: 34

Router Object Table Offset: 0

Encoder Object Table Offset: 99

Display Path Table Offset: 12

Connector Object Id [14] which is [LVDS]

encoder obj id [0x1e] which is [INTERNAL_UNIPHY (osx txmit 0x10 [duallink 0x0] enc 0x0)] linkb: false

Connector Object Id [12] which is [HDMI_TYPE_A]

encoder obj id [0x20] which is [INTERNAL_UNIPHY1 (osx txmit 0x11 [duallink 0x1] enc 0x2)] linkb: false

Connector Object Id [5] which is [VGA]

encoder obj id [0x15] which is [INTERNAL_KLDSCP_DAC1 (osx txmit 0x00 enc 0x10?)] linkb: false


and from radeon_bios_decode I get:



ATOM BIOS Rom:
SubsystemVendorID: 0x1025 SubsystemID: 0x050e
IOBaseAddress: 0x3000
Filename: BR039168.009
BIOS Bootup Message:
Acer Compal JE70 HR Granville Pro DDR3 64Mx16/128Mx16 4CH

PCI ID: 1002:68a8
Connector at index 0
Type [@offset 45306]: LVDS (7)
Encoder [@offset 45310]: INTERNAL_UNIPHY (0x1e)
i2cid [@offset 45380]: 0x92, OSX senseid: 0x3
Connector at index 1
Type [@offset 45316]: HDMI-A (11)
Encoder [@offset 45320]: INTERNAL_UNIPHY1 (0x20)
i2cid [@offset 45403]: 0x90, OSX senseid: 0x1
Connector at index 2
Type [@offset 45326]: VGA (1)
Encoder [@offset 45330]: INTERNAL_KLDSCP_DAC1 (0x15)
i2cid [@offset 45430]: 0x94, OSX senseid: 0x5

This leads me to following configuration:


02000000400000000901000010000003 LVDS
00080000000200000001000011020101 HDMI
10000000100000000001000000100205 VGA

I'm using Framebuffer Uakari in AMD5000Controller.kext and have inserted device/vendor ID there and in AMDRadeonAccelerator.kext under Juniper (RV840 chip).
I also patched my DSDT and added Dual-Link code to GFX0

But when I boot up with GraphicsEnabler=Yes -v the system, despite fully booting up, doesn't switch to desktop but stays at console output. I also dont see any monitors / connectors in System Profiler

#2
mendietinha

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thats some nice topic. ill folllow. good luck.

#3
Lordadmiral Drake

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Tried changing control flags from 40 00 to 00 01. No change

#4
mendietinha

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how do i add dual link to gfx0 and what framebuffer you recomend for the 7650m, just a rebrand of the 6630m?

many thanks! my card isnt recognized by model yet.

edit: put the dual link too.

#5
mendietinha

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doing some progress here!

i think cosmetic for now, but ill keep going... all the right kexts load normally. amdacelerator, amd6000controller, amdsuport agpm etc...


lets see...

edit: inject vram, rom, framebuffer, disable hd4000, make it work together? the agpm recognizes and apears in the -v boot saying about the board, because i change the 6741 of 6630m to 6841 from 7650m. and it loads properly only using smbios mbp 8.2. otherwise says unknown.


any help here willl be fantastic. i change dsdt, agpm, boot, aty...

Attached Files



#6
Lordadmiral Drake

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mendietinha, would you please be so kind as to not hijack my thread and make your own? Thanx

#7
mendietinha

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off course! anyway ill follow it.

#8
Lordadmiral Drake

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Tried changing Feature Flags from 09 01 to the original 00 71. No change.

Anyone got any idea?

#9
mendietinha

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mate, did the system recognized vram or something? can u post some screenshots...? cheers

#10
artur-pt

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hello

for acer audio see here

http://www.osx86.net...hda_alc270.html

good hack

#11
Lordadmiral Drake

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Success! It works! :D

I updated OS X to 10.8.2, applied the exactly same patches to AMDRadeonAccelerator.kext and AMD5000Controller.kext as before, rebooted, and go fully working graphics :D

#12
mendietinha

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congrats!

is that all you`ve done?

"I'm using Framebuffer Uakari in AMD5000Controller.kext and have inserted device/vendor ID there and in AMDRadeonAccelerator.kext under Juniper (RV840 chip).
I also patched my DSDT and added Dual-Link code to GFX0"


because i think i can have success too after the official ati 7xxx support.

thanks!

#13
Lordadmiral Drake

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Yeap, thats all

#14
artur-pt

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hello

can u tell more exacly what u have.. i can understand by u words u have a sandy bridge notebook working with dual graphics ?

intel hd 3000 + ati6850m, if is that congrats u have nÂș 1 hack achieve that...

good hack

#15
Mirone

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congratulations!
explain in more detail you have dual graphics?
ati6850m HD300 as much work?
explain in more detail. :thumbsup_anim:





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