![]() ![]() The problem: Apple’s Disk Utility did not show the internal drive. The odyssey however continued for brief moment: Booted in Recovery Mode (CMD-R), which came up via Internet with an ancient El Capitan (10.11) Installer. (I can't say whether the Ubuntu had rebooted meanwhile, as the system was set to Auto-Login). hallelujah! Tactile Engine was suddenly back. Left the machine alone for about an hour but saw when I left, that Ubuntu had began downloading updates, drivers etc. Still: Trackpad working but no haptic feedback. Booted from it, wiped the SSD using Ubuntu’s Disk Utility and installed Ubuntu on the SSD. So I created a bootable USB drive using Etcher and Ubuntu 22.04 LTS amd64. My friend and partner in crime asked an interesting question this morning: How does the Trackpad behave under Windows or Linux? (Being an Intel machine it can boot either natively). still: Trackpad fully functional except for haptic feedback. Changed the Trackpad settings back and forth, rebooted, SMC & NVRAM reset, basically tried the whole sh*t again. So the Trackpad Prefs Pane is fully functional again, yet the Tactile Engine still provides no feedback. Would be good if some board level expert could explain the reason why with a comment below. It’s absolutely crazy: I've learned here that the Trackpad preferences don't show up properly (and instead present the image of the Apple’s Magic (Bluetooth) Trackpad, as seen in the now striked screenshot above), if the battery is not present. ***) Update 1: Trackpad now shown again in System Settings > Trackpad. Or it’s an active on-board component which is in charge of the tactile engine and passed away. The only thing I could imagine is either a hiccup in the board’s EFI or that the tension on the trackpad’s flex cable due to the bloated battery has lifted the FPC connector on the board (though nothing’s visible under a magnifier). bloated battery might lead to broken flex cable, but I've replaced that already twice and even tried replacing the trackpad as such, as you can read above). swapping the SSD (!) with a different macOS versionĪpple Diagnostics (formerly known as AHT Apple Hardware Test "D" at boot) reports no damage/error.booting in Recovery Mode, erasing the SSD Volume group, restarting and installing Big Sur from bootable macOS Installer USB drive. ![]() installation of two identical, known to be good Trackpad assemblies 810-00149-A.installation of two identical, known to be good Trackpad Flex Cables 821-00184-A.Re missing trackpad: According to System Profiler > SPI the trackpad is there. When opening System Preferences > Trackpad, it tells me that it doesn't find the trackpad and shows me a bluetooth connected Magic Trackpad, to which it would like to connect (perhaps as alternative as it thinks it's missing the internal trackpad, however there never was such a Magic Trackpad paired with that MBPR). No water damage, machine is otherwise in perfect condition. If I recall correctly the tactile engine/haptic feedback worked when I received the machine, but either stopped due to the further bloating battery or in the process of updating the macOS (which also has updated the board’s EFI). The machine had a bloating battery (which I've removed new battery waiting to be installed, once following trackpad problem is resolved). I have a 13" MBPR Early 2015 (A1502) here on which the internal trackpad fully works, but doesn't provide tactile feedback. For iMac10,1 through iMac12,x, we highly recommend users upgrade the GPU to a Metal supported model.FYI: Apple veteran (first Mac 1989), would call myself a Pro (unfortunately not at board level).GPU is socketed, recommend upgrading to Metal GPU (opens new window) Stock Bluetooth 2.0 card non-functional Requires an SSE4.1 CPU Upgrade (opens new window) UHCI/OHCI support in Public Beta, see current issues ( #1021 (opens new window)) GPU Acceleration in Public Beta, see current issues ( #108 (opens new window)) No GPU Acceleration in Mavericks and newer macOS Ventura installer creation requires 10.11 or later.May support 10.4 and newer (in a potentially broken state). Refers to OSes that can be patched to run with OpenCore Users running 10.9 or older are advised to upgrade to a newer operating system before using OCLP. Refers to OSes where running OpenCore-Patcher.app are supported Regarding OS support, see below: Support Entry The below table will list all supported and unsupported functions of the patcher currently: System_profiler SPHardwareDataType | grep 'Model Identifier' ![]()
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