Myself5 Posted May 21, 2022 Share Posted May 21, 2022 Hey Everyone, I've successfully managed to install Monterey 12.4 on my Latitude 5591 apart from a few issues. I intend to release a guide/GitHub documentation on the install process after these last flaws are solved. - Blackscreen during boot/Slow Boot(?) Currently, I get a black screen for around 2-3 Minutes during Boot. After I enter the filevault password I get the loading bar which fills approximately for 1/3, but after that i get a 2-3 Minute long Blackscreen until the Laptop ends up on the desktop. If I was to boot with "-v" the logs would approximately run as long as the 1/3 bar, but then get followed by a blackscreen -> Desktop scenario as well. - I have yet to look into CPUFriend for power consumption (is that even required on that platform?) - Replace the Intel drivers with required BRCM fixes once the DW1820 arrives Info: CPU: i5 8400H GPU: Intel UHD 630, no Dedicated RAM: 2x8GB SSD: Kingston NV1 (with working TRIM) Touchpad: ALPS, with full Mutitouch and gesture support as well as working trackpoint in the middle Brightness Buttons: Fixed using SSDT-BRT6 against GPU0 My current EFI directory is attached, I'd appreciate some hints in regards to the blackscreen/slow boot as I am pretty clueless about that currently. Note: The zip misses the "AirportItlwm.kext", which is however present on my system. It has been removed from the zip so that it can be uploaded here. Thanks in advance EFI_Latitude5591.zip Quote Link to comment Share on other sites More sharing options...
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