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Dell Latitude 7490 with i7-8650U, Intel UHD 620 and 1920x1080 LCD - Mojave

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Last update: 03 Jul 2019


Latitude_7490.jpg Lat7490_Sides.jpg


  • BIOS 1.8.0 1.9.3 1.10.0 1.11.0 (needs SATA in AHCI mode, not RAID or disk won't be seen)
  • Intel 8th gen Kaby Lake R quad-core i7-8650U 1.9GHz CPU (Turbo boost up to 3.9GHz for 3 & 4 cores and up 4.2GHz for 1 & 2 cores)
  • integrated Intel UHD620 GPU 300-1150MHz (PCI ven id 0x8086, dev id 0x5917)
  • 14" 1920x1080 FHD non-touch LCD
  • 16Go DDR4-2400 RAM
  • M.2 2280 512GB SATA SSD (in socket M)
  • Intel i219-LM Gigabit Ethernet (PCI ven id 0x8086, dev id 0x15d7)
  • Realtek ALC256 (ALC3246) High Def audio (PCI ven id 0x10ec, dev id 0x0256)
  • Intel Wireless-AC 8265 M.2 combo wireless card (PCI ven id 0x8086, dev id 0x24FD) + Bluetooth 4.2 PCI ven id 0x8087, dev id 0x0a2b)
  • Dell DW1820A M.2 802.11ac combo wireless card (PCI ven id 0x14e4, dev id 0x43a3) + Bluetooth 4.1 (PCI ven id 0x0a5c, dev id 0x6412) 
  • integrated Realtek HD webcam (USB internal, PCI ven id 0x0bda, dev id 0x5650)
  • integrated Realtek RTS525A microSD 4.0 card reader (PCI ven id 0x10ec, dev id 0x525a)
  • Alps I2C HID Multi-Touch Touchpad (PCI ven id 0x1028, dev id 0x081c)
  • Alps I2C HID TrackPoint (PCI ven id 0x044e: dev id 0x1212)
  • 1 x M.2 2230 WLAN slot (socket A)
  • 1 x M.2 2242 WWAN slot (socket B )
  • 1 x 3.5mm universal jack (combo audio)
  • 3 x USB 3.1 gen1 ports Type-A (right port with PowerShare)
  • 1 x HDMI 1.4 port
  • 1 x DisplayPort on USB Type-c


Lat7490:~ admin$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers [8086:5914] (rev 08)
00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 620 [8086:5917] (rev 07)
00:04.0 Signal processing controller [1180]: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem [8086:1903] (rev 08)
00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller [8086:9d2f] (rev 21)
00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Thermal subsystem [8086:9d31] (rev 21)
00:15.0 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 [8086:9d60] (rev 21)
00:15.1 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #1 [8086:9d61] (rev 21)
00:15.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #2 [8086:9d62] (rev 21)
00:15.3 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #3 [8086:9d63] (rev 21)
00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-LP CSME HECI #1 [8086:9d3a] (rev 21)
00:16.3 Serial controller [0700]: Intel Corporation Sunrise Point-LP Active Management Technology - SOL [8086:9d3d] (rev 21)
00:17.0 SATA controller [0106]: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] [8086:9d03] (rev 21)
00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #1 [8086:9d10] (rev f1)
00:1c.2 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #3 [8086:9d12] (rev f1)
00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point LPC Controller/eSPI Controller [8086:9d4e] (rev 21)
00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-LP PMC [8086:9d21] (rev 21)
00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-LP HD Audio [8086:9d71] (rev 21)
00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-LP SMBus [8086:9d23] (rev 21)
00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (4) I219-LM [8086:15d7] (rev 21)
01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader [10ec:525a] (rev 01)
02:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4350 802.11ac Wireless Network Adapter [14e4:43a3] (rev 08)


For recommended BIOS settings, see here.


NB: The E7490 is able to boot from microSD card in Legacy mode but, unfortunately, the RTS525a is not supported under OS X/macOS. So, the Clover EFI partition can be installed on an SD card but not the whole OS.



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Last update: 08 Sep 2019


Target macOS release:

  • Mojave 10.14.x


This is a Clover-based installation using the well-known/well documented vanilla method detailed below:






7490_Brightness.jpg   Display_HDMI-TV.jpg






7490_CPU_idle.jpg   7490_CPU_x24.jpg   7490_CPU_x38.jpg   7490_CPU_x39.jpg






Audio_Speakers.jpg   Audio_headphones.jpg






  • full graphics acceleration on Intel UHD620 iGPU, including brightness control (with Lilu v1.3.5 + WEG v1.2.7)
  • multi-display with HDMI OOB, including HDMI-to-DVI adaptation (HDMI-to-VGA not successful)
  • audio, including HDMI, microphone input and headset output (with AppleALC v1.3.6 & layout 11 + CodecCommander v2.7.1)
  • GigEthernet LAN connection (with IntelMausiEthernet 2.4.0 kext)
  • wireless and bluetooth with any compatible card (a DW1820A in my case)
  • left and right USB ports (with Hackintool-generated USBPorts)
  • integrated webcam (OOB)
  • CPU power management
  • sleep (Lid, Energy Saver settings, Apple menu, Fn-Insert, PWR button) & wake (Lid, PWR button)
  • battery management (with ACPIBatteryManager v1.90.1)
  • keyboard (with VoodooPS2Controller v1.9.2)
  • touchpad (with VoodooI2C v2.1.4 + VoodooI2CHID v1.0), including tap-to-click (mandatory in PrefPane settings), scroll & zoom, rotate or other multi-finger gestures. On occasions, won't work until system is rebooted one or several times.


Not working:

  • RTS525a microSD card reader
  • Touchpad buttons
  • TrackPoint


Not tested:

  • DP over USB Type-C display output



GeekBench v2.4.3 (32bit) gives a 14200+ rating:




1) 10.14 USB installer creation

  • Using a USB key of 8GB minimum, create a Mojave USB installer through the following Terminal command:
sudo <path>/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --volume /Volumes/<USB key>
  • where:
    • <path> = location of Mojave installation package (eg: /Applications if freshly downloaded)
    • <USB key> = name of formatted USB volume (eg: USB_8GB)


The process will take several minutes. Once completed:

  • install Clover bootloader on the USB installer with the following customised settings:
    • Clover for UEFI booting only
    • Install Clover in the ESP
    • UEFI Drivers
      • AudioDxe-64
      • DataHubDxe-64
      • FSInject-64
      • SMCHelper-64
      • ApfsDriverLoader-64
      • AppleImageLoader-64
      • AptioMemoryFix-64
      • Fat-64
      • HFSPlus
      • NvmExpressDxe-64
      • PartitionDxe-64
      • Ps2MouseDxe-64
      • UsbKbDxe-64
      • UsbMouseDxe-64
    • Themes (optional)
    • Install Clover Preference Pane (optional)
  • you may use version r4919 attached below:
  • once Clover is installed, launch Clover Configurator app and mount the freshly created EFI partition of the USB installer
  • open this EFI partition and transfer/copy the files & folders from the Latitude 7490 Mojave Clover pack below to the EFI/Clover folder:
    • Clover_Pack_7490.zip
    • Clover_Pack_7490_#2.zip
    • Clover_Pack_7490_#3.zip
    • Clover_Pack_7490_#4.zip
    • Clover_Pack_7490_#5.zip
    • Clover_Pack_7490_#6.zip
    • 7490_Mojave_Clover_Pack_#7.zip


2) 10.14 installation

  • boot the Mojave USB installer
  • at the Clover main menu, select the "Install macOS Mojave" partition (but don't press [ENTER])
  • press [SPACE], select -v verbose option in the menu, then choose to boot with the selected options
  • proceed with installation, creating & formatting the target Mojave installation through Disk Utility as/if required
  • on 1st reboot, boot off the USB installer and select the freshly created "macOS install from <target Mojave partition>"
  • repeat this until this partition is no longer offered and only the target Mojave partition is left to boot
  • Reboot the target Mojave partition via your USB installer


3) Post-installation tuning

  • Once the target Mojave partition has booted, complete the 1st boot configuration tuning
  • Once at the desktop, install Clover bootloader on the Mojave partition/disk with the customised settings listed above
  • Once Clover is installed, launch Clover Configurator app and mount the freshly created EFI partition of the Mojave partition/disk
  • Open this EFI partition and transfer the files & folders from the above Latitude 7490 Mojave Clover pack to the EFI/Clover folder
  • You may then reboot and verify that Mojave boots off your disk through Clover




Edit: 16 Apr 2019

 - - - - - - - - - - - -

Tuned-up Clover pack #2:

  • removed unnecessary SSDTs
  • removed unnecessary patches
  • removed unnecessary settings
  • added NoTouchID kext to fix authentication lag when making changes to /LE and/or /S/L/E
  • replaced I2C kexts to fix TouchPad laggy/jumpy movement


Edit: 31 Jul 2019:

 - - - - - - - - - - - -

Revised Clover pack #4:

  • patched DSDT added to inject support for Fn-F11/Fn-F12 brightness keys.


Edit: 09 Aug 2019:

 - - - - - - - - - - - - -

Revised Clover pack #5:

  • fixed mistake in patched DSDT affecting _PWR resources which killed Sleep when laptop running on mains.


Edit: 15 aug 2019:

 - - - - - - - - - - - - -

Revised Clover pack #6:

  • Adjusted Clover config to add "DellSMBIOSPatch" in order to avoid truncated Mac model name in "About This Mac".


Edit: 08 Sep 2019:

 - - - - - - - - - - - - -

Revised Clover pack #7:

  • Patched DSDT of pack #6 was causing system reset. Re-patched raw DSDT from BIOS 1.11.0 to inject support for Fn-F11/Fn-F12 brightness keys (no other patch) and all seems Ok.


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I initially installed Mojave on an external USB3.0 HDD in order to avoid messing with the Win10 installation that's on the built-in M.2 SATA SSD. Given that the Latitude 7490 can boot from microSD card (needs Legacy boot enabled in BIOS), I installed Clover and the 7490 pack on an old 2GB microSD card I had lying around. Card was initially reformatted FAT32. I now use it to boot Mojave from a freshly created partition on the SSD without having had to mess around with the Win10 Boot (EFI) partition. It works great.

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I got to test the Dell WD15 USB Type-c docking station today.



Supported OOB:

  • HDMI, mini-DP and VGA outputs
  • GigEthernet RJ45 port (Realtek RTL8153 USB3-to-Ethernet converter, 0x0bda:0x8153)
  • Rear USB2.0 ports
  • Rear USB3.0 port
  • Front USB3.0 port
  • Front headset jack



  • Rear line-out jack (tried various layouts to no effect)


Regarding VGA output:

  • VGA worked OOB as single connected display, laptop booted lid closed.
  • VGA worked as 2nd display only if connected at startup (it's quite usual for VGA not to work if connected after system has started).
  • VGA worked alongside DP and/or HDMI but only in clone mode, not as 2nd or 3rd display. This is something apparently done at docking station level. Dell manual states it's the expected mode in 3 x displays setup but, in my case, this was experienced only with DP connected, laptop's lid closed.


Front headset output:




VGA output (lid closed):



DP/HDMI output (lid closed, with or without VGA):




Dual display, built-in LCD + VGA:




Dual display, built-in LCD + DP or built-in LCD + HDMI:




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Building on the info provided by @jpz4085 all those months ago, I've patched the Latitude 7490 DSDT in order to remap brightness control to Fn-F11 and Fn-F12 keys (by default, it's Fn-F6 / Fn-b).


ACPI debugging confirmed that Fn-F11 and Fn-F12 controls are handled by Embedded Controller (EC) EV5 event. This was hinted by presence of call to IGPU.BRT6 method under EV5 Method in the DSDT:

    Method (EV5, 2, NotSerialized)
        \_SB.PCI0.IGPU.BRT6 (Arg0, Arg1)


BRT6 Method showed the usual default LCD notifications:

        Method (BRT6, 2, NotSerialized)
            If (LEqual (Arg0, One))
                Notify (LCD, 0x86)
            If (And (Arg0, 0x02))
                Notify (LCD, 0x87)


The required DSDT patch is quite simple and as follows:

1) inject Darwin in PCI0._INI Method:

    Scope (_SB.PCI0)
       Method (_INI, 0, Serialized)  // _INI: Initialize
            If (CondRefOf (\XOSI))
                If (LOr (XOSI ("Darwin"), XOSI ("Windows 2009")))      // Darwin OS injection
                    Store (0x07D9, OSYS)

2) check for Darwin in XSID Method:

    Scope (_SB)
        Method (XSID, 0, NotSerialized)
            If (LEqual (ACOS, Zero))
                If (CondRefOf (\XOSI, Local0))
                    If (LOr (XOSI ("Darwin"), XOSI (WIN7)))     // Darwin OS check
                        Store (0x80, ACOS)

3) modify notifications under BRT6 Method:

        Method (BRT6, 2, NotSerialized)
            If (LEqual (Arg0, One))
                Notify (LCD, 0x86)
                Notify (^^LPCB.PS2K, 0x0366)     // Fn-F12 = Brightness up
            If (And (Arg0, 0x02))
                Notify (LCD, 0x85)
                Notify (^^LPCB.PS2K, 0x0365)     // Fn-F11 = Brightness down


Patched DSDT available in the Clover pack posted above.


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Issue of bad patched DSDT causing laptop reset should be fixed. New revised Mojave Clover pack #7 available in main guide.

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