Perfect Triple Monitors 100% Work PowerColor HD6870 on Lion

[moarfish]

I have a 5850 and like to use displayport, for some reason it was working fine before, but since I have reinstalled the OS (10.7.4) it doesn't get a picture via displayport.

Any idea?

I have no idea as you are using a different card. My PowerColor HD 6870 works perfectly with 10.7.4 without any modification.
Just Standard UserDSDT install. Nothing to change in plist file.

 

[kiyyto]

idk, it is weird because it was working fine before I reinstalled.

 

[moarfish]

Works on Mountain Lion as well.
10.8.1 tested.

 

[grafixidea]

Works on Mountain Lion as well.
10.8.1 tested.

What about 10.8.2? I think will not be different (my 5770 do the same, although I'm running single monitor). I know it's old card but looks like it fits my needs and would be a medium upgrade from my HD 5770. I got a huge frustration from my new GTX 660 Ti which makes me want to stay away from Nvidia and think that AMD still more reliable when it comes to hackintosh!

I know the GTX 660 Ti none-comparable with HD 6870 but the 5770 is more than enough in my work on OS X (web design & development), I just need something more powerful for gaming on windows, the 660Ti do the gaming part perfectly, but not doing well on the OS X side which is more important for me in terms of stability and having a 100% functional system. I think the 6870 will definitely be more powerfull on gaming than the 5770 and still rock solid on OS X, what do you think?

So when I choose, sell the 660Ti and go for:
GTX 670 -- or -- HD 6870 + Samsung 23" 1920x1080 LED monitor, for almost the same money or less. I find myself vote for the second option!

 

[custom-mac]

Is your Sleep working?

If you use sleep: Did you check performance of your card after wakeup? I have ATI Sapphire Radeon HD 6870 1GB DDR5 PCIE VIDEO GRAPHICS CARD 100314-3L - it does not do well after wakeup. Also, it seems your card has reference layout, so the framebuffer should be Gibba (5 ports). Duckweed is similar, but only for cards with 4 ports.

 

[dextercry]

Hi! Are you still using HD 6870 ? I have same card as you and I cannot make my 3rd monitor to work, can you please give me some info ?

Thank you!