The problems listed here are likely to be experienced by anyone installing macOS High Sierra 10.13. Slow boot with APFS and TRIM The new APFS file system is much more sensitive to SSD hardware/firmware compatibility with regards to TRIM than HFS+J. Incompatibility will result in slow boot and other problems (battery status not showing, trackpad prefpane not showing, etc). Two solutions available: - disable the any TRIM patch you may be using (eg. no TRIM support for your SSD in that case) - or, install on HFS+J For installing on HFS+J, read here: https://www.tonymacx86.com/threads/...n-high-sierra-update-or-fresh-install.232855/ Problems booting the installer with dual-GPU (eg. Intel+AMD, Intel+Nvidia) There is an issue with the VESA drivers and the dual-GPU scenario. It impacts laptops and desktops. nv_disable=1 will not help. Instead you need to inject properties that prevent the VESA drivers from loading for the discrete graphics device and use the IGPU only. The new plists linked from my guide already have these injections (for Nvidia only; I will add AMD later). You can also inject the properties with ACPI. Read here: https://www.tonymacx86.com/threads/...-only-ran-for-0-seconds-with-dual-gpu.233092/ Extra/new Preboot entry showing in Clover with APFS setup You can hide it with config.plist settings. Read here: https://www.tonymacx86.com/threads/clover-high-sierra-and-preboot.233308/ Battery status not showing (even with correctly patched ACPI) Use ACPIBatteryManager.kext 1.81.3 or later: https://github.com/RehabMan/OS-X-ACPI-Battery-Driver Also, if you installed on APFS, disable the trim patch. With ACPIBatteryManager.kext 1.81.4 or later, you can also increase the FirstPollDelay (default 4000ms) by using RMCF (see SSDT-ACPIBATT.dsl in the ACPIBatteryManager github) or by using kernel flag abm_firstpolldelay. For example, to set to 16000ms (16 sec), use kernel flag: abm_firstpolldelay=16000 IntelBacklight.kext and ACPIBacklight.kext not working These kexts have been not working since 10.12.4. Read here: https://www.tonymacx86.com/threads/...rol-using-applebacklightinjector-kext.218222/ VoodooPS2Controller.kext versions prior to 1.8.24 will cause a KP Update to 1.8.24 or later. https://github.com/RehabMan/OS-X-Voodoo-PS2-Controller SysPrefs -> Trackpad is empty Use VoodooPS2Controller.kext v1.8.28 or later. https://github.com/RehabMan/OS-X-Voodoo-PS2-Controller Run Apps from Anywhere is now missing from SysPrefs -> Security & Privacy -> General If you had "Anywhere" already selected, upon updating to 10.13, it will still be available. But if you did a fresh install, this option is no longer present. Never mind though, you can enable it in Terminal: Code (Text): sudo spctl --master-disable Caps lock is unreliable Use VoodooPS2Controller.kext v.18.25 or later. https://github.com/RehabMan/OS-X-Voodoo-PS2-Controller -xcpm is no longer available for Ivy Bridge CPUs This flag was typically used with certain Ivy Bridge CPUs due to problems with ssdtPRgen.sh and native power management. See here for a potential fix: https://www.tonymacx86.com/threads/solved-ssdtprgen-aicpupm-kernel-panics-and-stepping-woes.202421/ With recent versions of Clover (r4155+), you can also set config.plist/KernelAndKextPatches/KernelIvyXCPM=true. Karabiner is broken Ouch! I really like that app. Hopefully it is fixed soon with an update. Karabiner Elements appear to be a replacement. It seems to be a WIP and has some issues, however... HD4400/HD4600 crashing with Safari and video playback Install IntelGraphicsFixup.kext + Lilu.kext. Haswell (and Broadwell) lags/pauses/unresponsiveness shortly after boot (and after wake from sleep) Shortly after login (and somewhat prior to login), the mouse and/or graphics may seem unresponsive. This usually clears up after about 20 seconds. The same effect is observed after wake from sleep. This seems to affect only Haswell graphics hardware. May be related to SMBIOS changes, as similar effects were observed when using MacBookPro11,2 with previous versions of OS X/macOS. But now the problem appears also with MacBookAir6,2 and MacBookPro11,1. The solution appears to be removing unused connectors from the ig-platform data in the framebuffer kext: https://www.tonymacx86.com/threads/...s-in-10-12-sierra.202316/page-94#post-1485104 Note: In some cases, this is issue from 10.12 is already fixed in 10.13. YMMV. Brightness and Volume keys will not work The new VoodooPS2Controller.kext v1.8.25 or later maps the brightness keys to F14/F15. As long as you don't re-assign them in SysPrefs->Keyboard->Shortcuts, this is a fine work around. https://github.com/RehabMan/OS-X-Voodoo-PS2-Controller Some audio codecs will require an additional patch (AppleHDA) If you are using target codec 0x11d4198b, you may need to also zero out codec compare 0x11d4198a (a new supported codec in 10.12). eg. in KextsToPatch: Comment: 0x11d4198a to zero MatchOS: 10.12.x Name: AppleHDA Find: <8a19d411> Replace: <00000000> Some Broadcom WiFi no longer supported The drivers have been removed as these devices were included on Macs that are not supported by Sierra. https://www.tonymacx86.com/threads/...i-devices-unsupported-in-macos-sierra.201746/ Graphics boot glitch patch for 10.13 Install IntelGraphicsFixup.kext and Lilu.kext. You probably need them for other problems anyway. The patch is also present in config_patches.plist in the github repo linked from the Clover laptop guide: https://www.tonymacx86.com/threads/guide-booting-the-os-x-installer-on-laptops-with-clover.148093/ New USB port limit patch See guide: https://www.tonymacx86.com/threads/guide-creating-a-custom-ssdt-for-usbinjectall-kext.211311/ USB power properties injection method has changed (since 10.12) See guide: https://www.tonymacx86.com/threads/guide-usb-power-property-injection-for-sierra.222266/ New patch for SMBIOS whitelist AirportBrcm4360 abgn WiFi eg. in KextsToPatch: Comment: AirPortBrcm4360 whitelist patch (board-id), 10.13.beta9, credit RehabMan MatchOS: 10.13.x Name: com.apple.driver.AirPort.Brcm4360 Find: <483b45e0 7514> Replace: <ffc39090 9090> New minStolenSize patches for Broadwell and Skylake The minStolenSize patch is used if you can't set DVMT-prealloc to the required value. You need 64mb or larger, typical PC laptop defaults to 32mb. See patches in config_deprecated.plist as linked from the main Clover laptop guide: https://www.tonymacx86.com/threads/guide-booting-the-os-x-installer-on-laptops-with-clover.148093/ Better than using the minStolenSize patch is to patch the framebuffer such that the assertion never fires. Read here: https://www.tonymacx86.com/threads/...lensize-patch-with-32mb-dvmt-prealloc.221506/ New mechanism for system logs Sierra uses a new mechanism for logging. Both at the application level and system level. Logs created by kexts using IOLog are automatically redirected to the new mechanism. See this thread for ideas on access: https://www.tonymacx86.com/threads/...ay-the-console-now-works.207833/#post-1375525 Further details at developer.apple.com.