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Lynge

Lynge

Member Since 17 Jan 2008
Offline Last Active Oct 23 2012 10:58 AM
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Posts I've Made

In Topic: 6870 with 4 monitors. Resetting display settings.

26 September 2012 - 07:00 PM

Would gladly provide you with the temps, any suggestions on how to get them?

My card has 2048 and it shows up as such, but maybe that's not what you meant?

eep357: If you still have those files, I would love to try them out or did you need any more info to make them work?

In Topic: 6870 with 4 monitors. Resetting display settings.

26 September 2012 - 12:20 PM

eep357: Yep, switching to scaled enables the resolution selector again. Thanks.

My framebuffer line looks like this:
ATY,AMD,RadeonFramebuffer@0  <class AtiFbStub, id 0x100000338, registered, matched, active, busy 0 (1965 ms), retain 8>

The only problems I am having with it is the slight chopping when dragging a large window to the vertical screen (I can live with this) and when maximizing chrome, the transition effect is also choppy. Not so when doing the same with Textmate for some reason. Maybe it is just a product of having such a large amount of screen realestate?

I just tried booting with Bulrushes and I got all black screens.

In Topic: 6870 with 4 monitors. Resetting display settings.

21 September 2012 - 06:43 PM

The only problem so far is that I have one of the smaller monitors in portrait mode, and moving windows around on it, seems a bit choppy.
Plus, I can no longer select what resolution I want for the monitors. Not that it has selected a wrong one. I suspect it is simply no longer an option in ML?

In Topic: 6870 with 4 monitors. Resetting display settings.

21 September 2012 - 03:04 PM

I am speaking to you from the land 4 monitor goodness and "near-OOB" perfection. I am in a state of zen and nothing seems to bother me :D

In other words, IT WORKS!!!

For some reason, I cannot run the kakewalk installer with the ATI6000Controller.kext it provides, but when it is added back in after the installation is complete, it just works! Everything!

I have been trying to see if it is running bad in some way, but I can play 720P movies and play flash games. Any other ideas to gauge if the driver is working like it should?

All effects seem to be running.

I cannot believe it was this simple. If only my initial ML image had not been corrupt, all this might have been avoided as I would probably have pursued that installation rather than trying to fix the old one. I did however learn something about how these cards a tied in with the system.


So, to recap.
Graphics card is a Club 3D Radeon HD 6870 Eyefinity 6 Edition

I made a Kakewalk install stick (not sure how much this matters, it might also work with custom or myHack sticks). Then I copied the kext: /path to your Kakewalk install stick/System/Library/Extensions/ATI6000Controller.kext to an empty USB stick and removed it from the Kakewalk stick. I did not repair permissions on the Kakewalk stick, probably not important if you do or not.
Then I was able to install 10.8 on the machine.
I then finished installing Kakewalk to the machine and before I rebooted, I got the kext from the other usb stick and put it back in /System/Library/Extensions/
Repair permissions and reboot with boot options -v -f. It should now recognize all 4 monitors.

TL;DR-version: The ATI6000Controller.kext cannot be present during OSX 10.8 installation, but must be injected afterwards to make the card work.

My specs:
Gigabyte X58A UD7
Club 3D Radeon HD 6870 Eyefinity 6 Edition 2GB
Intel core i7 9200
12 GB 1079 MHz DDR3
Intel 80GB SSD

Huge thanks to all who helped. Especially eep357 who let me waste such a large amount of his time with this enormous detour :D Thanks mate, I definitely ow you the infamous beer everyone seems to hand out :)

This thread could be renamed, if you wish, to something that would help others with the same card, find this little workaround.

Again, thanks for the help :D

In Topic: 6870 with 4 monitors. Resetting display settings.

20 September 2012 - 06:53 PM

YAY! removing ATI6xxxController.kext from the usb installer did it. I now have a ML install running. Crappy graphics, but now I just need to get xcode and run ioreg to get you that file.

I have a question: Do I have to add the removed kext back in before running ioreg? Because I fear that if I add it back, the system wont start up.
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