Add patch for AMD ZEN to fix microphone issue #882
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In the function AppleHDAController::getAudioStreamLinkPositionInDMABuffer(IOHDAStream*, uint64_t*), it expects bit 0 of register 0x70 to be cleared before reading DMA position. However, for AMD, it somehow is not cleared, hence DMA position is incorrect. For now the workround is to skip that bit check. This patch has been veried to work up to macOS Sonoma.
Previously the workround is to disable DMA Position Buffer Enable bit completely, which can be dangerous. This new patch just skips that bit check in getAudioStreamLinkPositionInDMABuffer method, which can be "safer".
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I can confirm this fully enabled the microphone port on back I/O. Tested on two different B550 ITX motherboards (Asus and Gigabyte). |
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Confirmed fully working built-in microphone on the Huawei Matebook D14 AMD (2020) (ALC256) with this change. |
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Confirmed to work on my Gigabyte B550 Vision D. Mic input on Ryzentosh has never worked until now. Thanks to the submitter for finding a solution, and looking forward to getting this added to AppleALC. |
The required AMD ZEN patches were merged into upstream AppleALC via [1], so AppleALC can be updated through upstream from now on. Thanks to qhuyduong for bringing the changes upstream! [1] acidanthera/AppleALC#882
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Tested on ThinkBook16p-2021-5800H with ALC287 and layout id 11 in macOS 13.6.1, In "System Setting" the audio input device is still not available, and microphone can't be used. Maybe somethins was wrong with me? |
Same for me, with ThinkPad P14s ALC287 and Layout ID 11 on 12.7.1 |
Some AMD laptops have a dedicated hardware for controlling microphones. You can try my other kext https://github.com/qhuyduong/AMDMicrophone |
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I'm using an MSI b450 Tomahawk with ALC892, and microphone does not work even with this new patch, back IO and USB mic out don't work :( Using layout ID 1 |
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1220-VB workis with the latest kext but there is some chir chir sound in the background. I mean its not producing completely clear sound |
Same Here i have tried this on LENOVO 82K2 Ryzen 5500H variant. Audio works flawlessy but there is a annoying static noise on every layout id. Even post noise suppression doesn't fix it properly |
The required AMD ZEN patches were merged into upstream AppleALC via [1], so AppleALC can be updated through upstream from now on. Thanks to qhuyduong for bringing the changes upstream! [1] acidanthera/AppleALC#882
In the function AppleHDAController::getAudioStreamLinkPositionInDMABuffer(IOHDAStream*, uint64_t*), it expects bit 0 of register 0x70 to be cleared before reading DMA position. However, for AMD, it somehow is not cleared, hence DMA position is incorrect. For now the workround is to skip that bit check.
This patch has been veried to work up to macOS Sonoma.