TechAndrew Posted August 31, 2020 Share Posted August 31, 2020 On my Dell Latitude e7470, I had this issue that I haven't been able to resolve. When I toggle my brightness, it only remains at maximum and nothing happens until I reach minimum (or close to minimum), at which point the screen either starts to flicker or goes black. However, after I put the laptop in sleep (hibernate to be exact) and wake from sleep, the brightness adjusts exactly as intended. I already installed AppleBacklightFixup.kext to /L/E but then removed it as it's already part of WhateverGreen. I tried resetting NVRAM by running "sudo nvram -c". NVRAM appears to work, as the brightness level persists even after reboot. But the brightness level is ignored until waking from sleep. CLOVER.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted August 31, 2020 Moderators Share Posted August 31, 2020 is -disablegfxfirmware needed in boot arg? Check BIOS, make sure Legacy Option ROMS is NOT enable Link to comment Share on other sites More sharing options...
TechAndrew Posted September 1, 2020 Author Share Posted September 1, 2020 Yes, my laptop will not boot unless I add “-disablegfxfirmware”. Legacy Option ROMs is disabled. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted September 1, 2020 Moderators Share Posted September 1, 2020 Hmm, I don't have this issue. You could try using the OpenCore bootpack. Link to comment Share on other sites More sharing options...
TechAndrew Posted September 3, 2020 Author Share Posted September 3, 2020 Converted to OpenCore and double-checked I copied everything from Clover correctly... Even with OpenCore, I still have the exact same issue. Perhaps there's an issue with the patch itself? I attached the text files generated by OpenCore, in case they help at all. On the bright side, anyone with a Dell Latitude e7470 can use my OpenCore folder, albeit with the brightness issue (haven't fully tested it though). Note: Please place your unique Serial Number, UUID, MLB, and ROM in config.plist before using the folder. e7470-OC.zip Logs.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted September 4, 2020 Moderators Share Posted September 4, 2020 I've been running OC and Clover without any issue with the same SSDT-PNLF.aml. Link to comment Share on other sites More sharing options...
TechAndrew Posted September 4, 2020 Author Share Posted September 4, 2020 Not even the brightness issue? If you don't mind, would you be able to provide the OC folder you're using? Are you using an e7470? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted September 4, 2020 Moderators Share Posted September 4, 2020 Sure, I'm on Big Sur Beta6 on E7470. Works fine on Catalina 10.15.6 too. I removed Apple, Microsoft and Dell folder The VoodooPS2Controller might not work for you. If your keyboard and trackpad not work, then replace it with whatever you're using. EFI-E7470-BS_Beta6.zip Link to comment Share on other sites More sharing options...
TechAndrew Posted September 5, 2020 Author Share Posted September 5, 2020 Strange... I tried your OC folder and it still has the same problem... Maybe my e7470 is slightly different? Link to comment Share on other sites More sharing options...
Taqieallah94 Posted September 22, 2020 Share Posted September 22, 2020 Clear Nvram Link to comment Share on other sites More sharing options...
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