Add ALC255 layout-id 16 for Gigabyte Aorus 15G (warm-reboot/sleep audio fix) - #959
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Add ALC255 layout-id 16 for Gigabyte Aorus 15G (warm-reboot/sleep audio fix)#959Andergraw wants to merge 1 commit into
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Adds a new custom layout (id 16) for the Realtek ALC255 on the Gigabyte Aorus 15G.
Fixes acidanthera/bugtracker#2540. Created as a new layout per @vandroiy2013's guidance in that thread (layouts 1–10 are reserved for Mirone/Toleda), rather than modifying the existing Mirone layout 3.
Problem
On this laptop the speaker is silent after a warm reboot from Windows → macOS and after wake from sleep (short/medium/long). Everything enumerates correctly — the device shows up, volume keys and jack-sense work — but no sound is produced. Cold boot from power-off is unaffected.
Cause
The Realtek vendor node (NID 0x20) keeps a processing coefficient in the muted state that Windows leaves behind and macOS's AppleHDA init never clears. Comparing a broken vs. a working codec dump, coef 0x10 reads
0x0220(bit 9 / mute set) when broken and0x0020when working. Re-writing coef 0x10 to0x0020restores audio in every tested case. (Two further coefficients, 0x45 and 0x1A, also differ but were observed not to persist on read-back, so only the minimal, effective coef 0x10 write is shipped here.)Fix
A new layout 16, identical to Mirone's layout 3 except that the following two verbs are appended to both
ConfigData(cold/warm boot) andWakeConfigData(sleep wake):WakeVerbReinitistrueso the wake verbs are re-sent on every power transition.Because the layout and platform data are byte-for-byte the same as Mirone layout 3, the new layout reuses
layout3.xml.zlibandPlatformsM.xml.zlibrather than adding duplicate resource files (per the "avoid unnecessary duplication" rule on the Adding-codec-support wiki page).Files changed
Resources/ALC255/Info.plist— new layout 16 entry inLayouts(→layout3.xml.zlib) andPlatforms(→PlatformsM.xml.zlib).Resources/PinConfigs.kext/Contents/Info.plist— newHDAConfigDefaultentry for CodecID 283902549 / LayoutID 16 with the patchedConfigData+WakeConfigData.Changelog.md— changelog line.Testing
Patched build on Gigabyte Aorus 15G, macOS Sequoia (24G624), OpenCore,
alcid=16:(Audio settles ~8 s after boot/wake in all cases; that is codec settling time and is unrelated to the patch.)