Next One Posted July 12, 2020 Share Posted July 12, 2020 This model has pretty good battery life (thanks to stevezheng cpufriend script), but the screen is not very good. It supports a ssd and nvme drive for dual boot hds which is nice. Not working: Headphones (but internal speakers and hdmi tv work ) sd reader fn11/12 brightness keys (set brightness in sys prefs) wifi (add a dw1560) ONLY USE FOLDER IF YOU HAVE 8250U CPU ! (if not delete cpufriend and "provider" from "other") appleps2controller used for trackpad (I tried to make a minimal setup, but I don't seem to have all the ssdts right) CLOVER insp5570.zip Link to comment Share on other sites More sharing options...
Next One Posted March 12, 2021 Author Share Posted March 12, 2021 I have now transitioned to BigSur using OC 6.7. Everything works fine except the brightness hotkeys; in Catalina I used BRT6 SSDT and XOSI patch method - in BigSur I have dropped the XOSI patch for GPIO.SSDT. Unfortunately I had no luck with "Brightnesskeys.kext"; is there a recommendation to fix this for f11/f12 without karabiner or other app ? Thx Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted March 12, 2021 Moderators Share Posted March 12, 2021 post your file Link to comment Share on other sites More sharing options...
Next One Posted March 12, 2021 Author Share Posted March 12, 2021 Thanks for looking...:Archiv.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted March 13, 2021 Moderators Share Posted March 13, 2021 Try this, just adding back SSDT-BRT6 and patch 5570-BrightnessFnKey.zip Link to comment Share on other sites More sharing options...
Next One Posted March 13, 2021 Author Share Posted March 13, 2021 That did not work; but its due to my mistake; I went back and checked the old EFI, and the ssdt I used was "SSDT-BKeyBRT6-Dell.aml" with XOSI-patch, not BRT6. I tried to merge the values but could not fix it (lacking skills...), please see attached ssdt. If you don't have the time that's fine - I can use the brightness slider from the menu of course - its more a "nice to have" now... Thanks again SSDT-BKeyBRT6-Dell.aml.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted March 13, 2021 Moderators Share Posted March 13, 2021 try this Archive.zip Link to comment Share on other sites More sharing options...
Next One Posted April 30, 2021 Author Share Posted April 30, 2021 re f11 f12 brightness-keys: I finally found that I don't need SSDT-GPIO, and found another way to enable f11-f12 brightness keys. This is based on SSDT-BCKM from tctien342 on GitHub ,so credits to tctien342; he has commented: // make BRT6 to be called on Darwin // call chain: _Q66 -> NEVT -> SMIE -> SMEE -> EV5 -> BRT6 // in SMEE, EV5 is called only when OSID >= 0x20, and OSID: // if ACOS == 0: init ACOS based on OS version // return ACOS // hence set ACOS >= 0x20 can do the trick, and this trick affects less methods than _OSI renaming patch I am not an expert and deleted some lines I felt I did not need, but this works on the 5570 and 5770 Inspiron; maybe you want to take a look as this could work on other Dell Laptops as well. My EFI setup using OC 6.7. and everything appears to work fine: SSDT-BCKM_DELL.zip Link to comment Share on other sites More sharing options...
Administrators Hervé Posted April 30, 2021 Administrators Share Posted April 30, 2021 We have known, detailed and used this kind of brightness keys patch for many years on laptops such as the E6xxx or E7xxx series... But thanks for this particular useful contribution for the Inspiron 5570. https://osxlatitude.com/forums/topic/8285-refined-alps-touchpad-driver/?do=findComment&comment=84779 https://osxlatitude.com/forums/topic/8285-refined-alps-touchpad-driver/?do=findComment&comment=84815 https://osxlatitude.com/forums/topic/12129-latitude-e7250-with-i5-5300u-hd5500-and-1366x768-lcd-high-sierramojavecatalina/?do=findComment&comment=93508 Link to comment Share on other sites More sharing options...
Next One Posted April 30, 2021 Author Share Posted April 30, 2021 These "previous" methods have worked for my E7250 and E7450 and Catalina. (but not on the Inspiron) I don't know why you have to point at those again - I have no intention to take credit for anything or get into some sort of competition. Thanks for your support, and I hope someone using the Inspiron 5570/5770 can make use of this. Link to comment Share on other sites More sharing options...
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