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jkheit Author

Level 1

5 points

10.10.3 breaks support for ATI video cards

The 10.10.3 update has broken support for a bunch of ATI video cards that worked just fine under 10.10.2. This is for my Mac Pro 5,1. Some folks also reported issues with breaking support for Nvidia cards, but have mentioned that the latest Nvidia beta drivers might work.

There is a thread that may be found here that has some details:

OS X 10.10.3 Update

and here (reverting back to 10.10.2 fixes things):

http://forums.macrumors.com/showthread.php?t=1864352

Specifically, my Visiontek Eyefinity 6 7750 stopped working, and another users Radeon 7770 stopped working. Yet, the 7970 continues to work. Reverting to the old ATI 5770 that came with the machine renders it usable. This is a problem as the 7750 only took a single slot, and the two 5770s eat up 3 slots so I can't use my USB 3 card, etc.

I remember this once happened before. I think it was with the 10.9.2 update which borked a bunch of video cards that worked fine under 10.9.1, and then were again made to work just fine with the 10.9.3 update.

All the 'standard' fixes have been attempted. Clean installs. Fix permissions. Etc.

Not sure why apple would seemingly disable support for these cards, other than by accident, I assume, much like happened with the 10.9.2 update.

Also not sure if just copying the correct driver from 10.10.2 might solve the problem until Apple get's around to fixing the issue. Has anyone tried? Any suggestions would be appreciated. Thanks!

Posted on Apr 9, 2015 11:45 PM

17 replies

Nov 1, 2015 6:35 AM in response to joshua_g4

The following configuration fixed my issues with a HIS ATI 7750 1 GB on a Mac Pro 3.1 in 10.10.5

Due to ATI's chip specification for vendors these settings seem to configure the device between dynamic or fixed power modes. I think, the implemented power converters and power scheme is highly dependent onto the vendors implementation an the PCIe GPU card. Of cause apple knows how their own cards operate and what settings they support. Nevertheless a detection of the GPU specific settings should be an easy job for them to do. I personally think keeping these great computers running and not forcing them to become trash due to none available GPU updates is way better for the environment.

For my card the following settings seem to work good running 10.10.5 Mac Pro 3.1.

# modified AMDRadeonX4000

<key>cail_properties</key>

<dict>

<key>CAIL_DisableDrmdmaPowerGating</key>

<key>CAIL_DisableDynamicGfxMGPowerGating</key>

<key>CAIL_DisableGfxCGPowerGating</key>

<key>CAIL_DisableGmcPowerGating</key>

<key>CAIL_DisableStaticGfxMGPowerGating</key>

<key>CAIL_DisableUVDPowerGating</key>

<key>CAIL_DisableVCEPowerGating</key>

</dict>

touch /System/Library/Extension

reboot

P.S. had the same issue with 10.11.0 with this PCIe GPU in my Mac Pro 3.1 Please note that the settings seem no to fix it even-though they did in 10.10.5.

The speed of the PCIe GPU seems to be reduced and unstable. If anyone has an idea please feel free to post here.

toni_999

Level 1

10 points

Nov 8, 2015 11:48 PM in response to joshua_g4

any chance to get newer ati cards running on a mac? I own a mac pro 2009 with a 7970.

I see the ati r9 nano would be low in heat an power consumption. Nvidia has it-s own driver available for download, but I did not find any for the ati cards.

10.10.3 breaks support for ATI video cards