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    • is this latitude or Inspiron?   Have you tried Karabiner-Elements.app to set the Fn keys. See my example here
    • Have you tried connecting to external monitor and see if you have full QE/CI?   Do you know if system has LVDS or ePD display?
    • why not compare all the data you have above with the imacs info and see whats different or missing.
    • This report whit this file and your SSDT, no work   now I put the kext "BETA" 2.1.1 PS2 but same result, I really tried them all, but I can't give up now, I have to insist ...... From the vision of the ACPI origin do you have ideas ???? I have not found any ACPI folder with similar structure among the configurations found on the DELL network I have read in some guides that removing _DSM methods is not good, so I didn't use that rename   This is the keyboard for brightness keys   MacBook Pro di Baio77.zip 0DYKNT.zip
    • Oh, alright thanks.   Thank you for every bit of help, I really appreciate it.   Can't always find a solution to these obscure problems.
    • Oh, if there is no ethernet, yes install the NullEthernet kext. You can Google for it.   For the rest, it's up to you, I've no explanation for the encountered behaviour.
    • I have a 7490 with Thunderbolt and followed Hervé's guide. I'm still on Mojave for what it's worth. I can confim I have the same issue with the USB-C port as reported here. I have a WD15 Dock which works fine on the USB-C port, althought it doesn't work if I hot swap it - it must be plugged in before I turn on the 7490.   When plugging in a flash drive into the USB-C port, it doesn't pickup the drive at all. On the same machine but booted into Linux, it works fine.   I was trying to get Thunderbolt to work myself but I've not had much luck. If I connect the 7490 to an iMac using Thunderbolt, it shows up as a Thunderbolt enabled PC. However it shows this before the 7490 even boots into macOS and I believe it's supposed to detect that it's a Mac connected when macOS is booted. If I boot the same 7490 into Linux with the Thunderbolt cable still connected to the iMac, the iMac shows it's an Ubuntu device connected.   I can see a Thunderbolt 3 NHI PCI device at 8086,15d9 but it doesn't seemed to be properly loaded. It might need to be added to the config.plist but I'm not sure what sort of property keys and values it needs. I'd be happy to test anything if anyone else has any ideas.   iMac with 7490 Connected running macOS   iMac with 7490 Connected running Ubuntu   Thunderbolt 3 NHI PCI Device   IOReg showing the PCI device   System Profiler showing no drivers loaded    
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