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Last update: 16 Sep 2020 Here are BIOS settings that are known to work on the 7490 (8th gen. Kaby Lake R CPU with Intel UHD620 graphics) under Mojave and Catalina. These settings were tested and verified with BIOS 1.8.0 / 1.9.3 / 1.10.0 / 1.11.0 / 1.12.2 / 1.13.1 / 1.14.0 / 1.15.1 / 1.16.0. General . Boot Sequence: * Boot List Option = UEFI (-> Boot Sequence list will be set accordingly) . Adanced Boot Options: * Enable Legacy Option ROMs = On (required to boot legacy external devices such as USB media or SD cards) * Enable Attempt Legacy Boot = On . UEFI Boot Path Security: * Never (or whatever other value) System Configuration . Integrated NIC = Enabled . SATA Operation = AHCI . Drives: * SATA-2 = On * M.2 PCIe SSD-0 = On . SMART Reporting: * Enable SMART Reporting = On or Off . USB Configuration: * Enable USB Boot Support = On * Enable External USB Port = On . Dell Type-C Dock Configuration: * Always Allow Dell Docks = On . USB PowerShare: * Enable USB PowerShare = On . Audio: * Enable Audio = On * Enable Microphone = On * Enable Internal Speaker = On . Keyboard illumination: * Bright = On (or any desired value) . Keyboard Backlight on AC: * Any desired setting . Keyboard Backlight on Battery: * Any desired setting . Unobtrusive Mode: * Enable Unobtrusive Mode = Off . Miscellaneous Devices: * Enable Camera = On * Secure Digital (SD) Card Boot = On * Enable Secure Digital (SD) Card = On * Secure Digital (SD) Card Read-Only Mode = Off Video . LCD Brightness = Whatever settings you prefer Security . Admin Password = not set (or whatever) . System Password = not set (or whatever) . Internal HDD-0 PW | M.2 SATA SSD-2 Password = not set (or whatever) . Strong Password = Off . Password Configuration = default settings . Password Bypass = Disabled . Password Change: Allow Non-admin Password Changes = on . Non-Admin Setup Changes = Off . UEFI Capsule Firmware Updates = On . TPM 2.0 Security = Off or On with whatever desired settings . Absolute(R) = Disabled (or whatever desired settings) . OROM Keyboard Access = Enabled . Admin Setup Lockout = Off . Master Setup Lockout = Off . SMM Security Mitigator = Off Secure Boot . Secure Boot Enable = Disabled . Secure Boot Mode = Deployed Mode . Expert Key Management: * Enable Custom Mode = Off * Custom Mode Key Management = PK Intel Software Guard Extensions . Intel SGX Enable = Software Controlled . Enclave Memory Size = not configurable Performance . Multi Core Support = All . Intel SpeedStep = Enabled . C-States control = On . Intel TurboBoost = Enabled . HyperThread Control = Enabled Power Management: . AC Behavior: * Wake on AC = Off . Enable Intel Speed Shift Technology = On . Auto On Time = Disabled . USB Wake Support * Enable USB Wake Support = On or Off * Wake on Dell USB-c Dock = On or Off . Wireless Radio Control: * Control WLAN radio = Off * Control WWAN radio = Off . Wake on LAN/WLAN = Disabled . Block Sleep = Off . Peak Shift = Off . Advanced Battery Charge Configuration = Off . Primary Battery Charge Configuration = Express Charge (or any other choice) . Type-C Connector Power = 7.5 or 15 Watts POST Behavior . Adapter Warnings = Enabled . USB-C Warnings = Enabled (item only available in later BIOS versions) . Keypad (Embedded) = Fn Key Only . Numlock Enable = Enabled . Fn Lock Optio: * Fn Lock = On * Lock Mode Disable/Standard = On . Fast Boot = Minimal . Extend BIOS POST Time = 0 seconds (or any other choice) . Full Screen Logo = On or Off . Warnings and Errors = Prompt on Warnings and Errors . MAC address Pass-Through = Passthrough MAC address Manageability . Intel AMT Capability = Enabled (item only available in later BIOS versions) . USB Provision = Off . MEBx Hotkey = Enabled Virtualization Support . Virtualization = Enabled . VT for Direct I/O = Disabled . Trusted Execution = Off Wireless . Wireless Switch: * WWAN = On * WLAN = On * GPS (on WWAN Module) = On * Bluetooth = On . Wireless Device Enable: * WWAN/GPS = On * Bluetooth = On * WLAN = On

I very much doubt the patched DSDT of the E6230 has anything to do with your issue... Your patched AppleAHCIPort kext is of High Sierra (beta?) origin (v328), re-versioned to v999. It probably came from here or here and details of the alternative to reverting kext (i.e. binary patch) were posted here. Given the very origin of the kext, I'm not too surprised it now causes KP in Catalina. What you ought to do is find the alternative to replacing/superseding Catalina's vanilla AppleAHCIPort kext by a now inappropriate older version and actually apply the relevant binary patch to Catalina's own kext. Once you find details of the patch, simply apply them to the kext cache through Clover's built-in on-the-fly patching facility. I suggest you start here and/or Google for "Hotplug Catalina" / "Hotswap Catalina"... More suitable than kext superseding here. As usual, the key is to know what you're doing and why you're doing it.

DW1510 does not have Bluetooth so you must be using another device for Bluetooth. DW1550 will work since it's a combo card but you'll still the 2 kexts mentioned above for wifi. DW1560 will not wok since it's an M.2 card and you need a mini PCIe card. If you have Bluetooth working prior with BRCM*, then try upgrading the kexts. https://github.com/acidanthera/BrcmPatchRAM/releases YOu'll need these 3 kexts in /L/E: BrcmBluetoothInjector.kext BrcmPatchRAM3.kext BrcmFirmwareRepo.kext

DW1510 is no longer supported in Catalina and as such you'll need to restore kext(s) from Mojave. https://osxlatitude.com/forums/topic/11138-inventory-of-supportedunsupported-wireless-cards-2-sierra-catalina/ For 10.15.0, you'll only need IO80211Family.kext replaced from Mojave copy to /L/E For 10.15.1, you'll need both IO80211Family.kext and IO80211FamilyV2.kext from Mojave copy to /L/E Repair permissions and rebuild cache