Lion 10.7.3 - Radeon HD 6870

[chorner]

Hey guys,

So let's just say I'm tired of searching through a million threads with no specific information on supported cards, and what it takes EXACTLY to configure the card, and if it works 100% without any issues like DVD player crashes I've heard of etc. OOB.

Assuming you have a proper motherboard DSDT installed and setup with MultiBeast, what settings are required to get a reference design Radeon HD 6870 working 'OOB' like I've read it should be supported?

Please list your system definition, and your org.chameleon.plist settings.

Do you need to use Graphics Enabler = yes? Can you omit this, and have it work 100%? Do you need any other settings? I've purchased and setup a bootable installation disk for Lion 10.7.3 fresh install, and getting prepared to throw in this card until my Radeon 7970 is supported (if ever )

Thanks guys!

 

[imdrecordings]

Here you go!
You'll need two DVI cables hooked up and a HDMI cable for dual monitors.
What's your Mobo and who makes your GUI card?

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Kernel</key>
<string>mach_kernel</string>
<key>EthernetBuiltIn</key>
<string>Yes</string>
<key>GenerateCStates</key>
<string>Yes</string>
<key>GeneratePStates</key>
<string>Yes</string>
<key>AtiConfig</key>
<string>Duckweed</string>
<key>AtiPorts</key>
<string>4</string>
<key>GraphicsEnabler</key>
<string>Yes</string>
<key>Legacy Logo</key>
<string>Yes</string>
<key>Timeout</key>
<string>1</string>
<key>UseKernelCache</key>
<string>Yes</string>
</dict>
</plist>

 

[chorner]

Thank you very much! Awesome

I have a Diamond HD 6870 (the reference card), and a Gigabyte X58A-OC motherboard.

I'm running a 27" Apple Led Cinema Display, so I've got it hooked up to the miniDP port.

 

[ectoplasmosis]

I'm running pretty much the same setup as you (27" Cinema Display via reference 6870), and everything just worked out of box with the preconfigured GraphicsEnabler=Yes string. No need to change framebuffers or anything kooky like that.

I did need to edit my system definition and AGPM.kext to get full performance after wake from sleep as per this thread: viewtopic.php?f=15&t=55900

And modified my BIOS to get the full 2560x1440 resolution for Chimera/Apple boot screen: viewtopic.php?f=7&t=41796

One word of warning if you do set Chimera to native Cinema Display res and use a full size 2550x1440 wallpaper: you will break the bootloader with a Memory Allocation Error as it can't handle .png image sizes larger than ~3.8MB. I ended up booting from the Unibeast disk and optimising my background in Photoshop down to a 3.2MB 8-bit PNG (didn't affect image quality as it's just the grey shaded Apple linen background).

Hope that helps.

 

[chorner]

Interesting... excellent tips ectoplasmosis. Thanks! I will certainly apply the full performance after wake from sleep fix.

I hadn't read what you posted before, but I simply put a string into my chameleon bootlist, to set the graphics mode as '2560x1440x32' -- which only looks stretched in the 'legacy apple boot screen' which doesn't really bother me. Don't know that I'd bother with a bios mode to get rid of less than 5 seconds of that screen not being 16:9!