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macOS Sierra PB: Need testers for new AMD Radeon drivers!

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Dumb question, is it worth our time to file a radar (bug) report to Apple regarding this issue?
Absolutely!

Especially with the recent announcement that Apple will be making 'modular' machines in the sort of distant future, these issues need fixing. As well as for current folks that are trying to use their RX based cards.

The trick is in the phrasing. As well as how widespread the issue is, how disruptive it is, etc.

I understand this currently affects all Mac Pro users, all MacBook users with eGPU attached cards, etc. :)
 
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macOS Sierra 10.12.5 Public Beta V5 (16F71b) is available.

The Apple AMD 9510 Controller and 4100 kext have been updated to 1.51.8.
The frame buffer is Berbice and the relevant info is: <string>0x67E01002 0x67FF1002 0x67EF1002</string>.

Audio via DP/HDMI -> broken.
 
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Well, based on this picture, the rx 540 based on polaris 12 is pretty much confirmed https://www.amd.com/en/products/graphics/radeon-rx-540
At the moment, AMD's server is not responding, it is probably slashdotted by all of the tech bloggers trying to catch up on the new release. :)

But some of them have gotten the information and say that this is a new mobile gpu that is supposed to be decent for notebook computers (by decent, they say better than the built in igpu).

Thanks for the information.
 
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We might get driver support, but actual liquid cooled cards in a machine support might be a stretch ... Way back when during the PowerMac G5 times, Apple released a liquid cooled G5. These were the early days of liquid cooling, the technology was not mature, and there were a lot of leaks ruining the equipment. Apple swore off of that approach and has never used it since then.
 
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