Closed Qonfused closed 8 months ago
It's possible that HDMI audio does not work due to an unset power well state. This was discovered from a check that looks for the presence of a connector flag (from the internal display, oddly enough).
This check was found in AppleIntelFramebufferController::getPowerWellState: https://github.com/acidanthera/WhateverGreen/blob/c5a5f507f54a6ff1d17e048fb9456302ef2a3702/WhateverGreen/kern_fb.hpp#L138-L142:
AppleIntelFramebufferController::getPowerWellState
0x100 // Activates Power Well 2 usage (SKL_PW_CTL_IDX_PW_2) 0x80 // Activates MISC IO power well (SKL_DISP_PW_MISC_IO)
I've previously encountered this in https://github.com/Qonfused/ASUS-ZenBook-Duo-14-UX481-Hackintosh/issues/4#issuecomment-1483911815, which brings some related points to this issue (as both audio and DDI_B lanes are within the power domain of PW2).
For HDMI (digital audio), the suggested fix is to change the connector flags for the internal display (con0) from 98000000 to 98010000:
98000000
98010000
framebuffer-con0-alldata | Data | <00000800 02000000 98010000> framebuffer-con0-enable | Data | <01000000>
It's possible that HDMI audio does not work due to an unset power well state. This was discovered from a check that looks for the presence of a connector flag (from the internal display, oddly enough).
This check was found in
AppleIntelFramebufferController::getPowerWellState: https://github.com/acidanthera/WhateverGreen/blob/c5a5f507f54a6ff1d17e048fb9456302ef2a3702/WhateverGreen/kern_fb.hpp#L138-L142:I've previously encountered this in https://github.com/Qonfused/ASUS-ZenBook-Duo-14-UX481-Hackintosh/issues/4#issuecomment-1483911815, which brings some related points to this issue (as both audio and DDI_B lanes are within the power domain of PW2).
For HDMI (digital audio), the suggested fix is to change the connector flags for the internal display (con0) from
98000000to98010000: