Extremeagile

@muttonhead411 Yes totally onboard with the idea to get a little community going. I came across a blog post which listed the 7490 as its top recommendation for hackintoshing. If people took that advice there must be many more of us. What sleep related issues have you being experiencing? I haven't had the occasion to verify what is/ isn't working yet beyond what's obvious so haven't picked up on any other issues yet (not tested ports, audio out etc). So on booting back into OpenCore this evening - after having used Clover for the last week - I was surprised to discover that my trackpad doesn't work at all anymore under OpenCore (despite making no changes). Even with XOSI & GPIO; XOSI config patch,; DSDT patches etc. So damn strange. Also tried your suggested .config patches but that didn't work either. Any idea of what could be going on? Could you share your OC folder with us? Or give a detailed guide of how you got the trackpad working and what kind of issues you experienced along the way?

@Fuzeless: Nice work getting everything figured out under Clover If you’re still having trouble compiling your DSDT (and need it for some reason (Fn key remapping for example), the following may be of some assistance: I too, experienced some errors when compiling my DSDT in MacIASL (was following the OC wiki on Dortania.) By using an alternate fork of MacIASL, and disassembling the DSDT .aml file to a .dsl file, I managed to get it to compile without errors (key points below and detailed instructions at RehabMan’s laptop DSDT patching guide No I haven’t found that the right-hand section of my palm-rest heats up under MacOS. The machine seems to run cooler under OSX and is definitely much quieter than under Windows - the fan noise was insane with Win10. Key points for compiling DSDT file: Use clover boot loader to dump your DSDT (by pressing the F4 key at the boot screen). [I already dumped by DSDT under Win10 but figured this method might give a cleaner DSDT file]. Install RehabMan’s fork of MacIASL to Applications folder [this version seems to perform differently to the acidanthara release recommended by the Dortania OC wiki]. I can’t find a link to it but have attached the file to this post. Install iasl tools to /usr/bin Copy iasl tools to the MacIASL.app directory in Applications Disassemble your DSDT.aml file from clover. No need for -da option. No need for refs.txt Open the resulting .dsl file in MacIASL and try to compile. You should only get 3 errors. Replace the “If (LEqual (PM6H, One))” section with the amended one as explained in the guide Try to compile -> 1 error remaining -> Rename XTBT and add the XTB2 method before XTBT Now you can compile. Remember to save the error free dsdt as a .dsl file (patches can be applied to this). RehabMan-MaciASL-2018-0507.zip

It's totally strange that our trackpads are responding differently under virtually the same conditions. Can you confirm if VoodooI2CHID is loading properly (I don't see it in your screenshot)? Do we even have the same trackpad? The hardware ID for my trackpad is DELL081C. If we have the same trackpad then my thoughts jump to the BIOS configuration / version. I flashed mine recently so should be on the latest version. Or else, could it be that our trackpads are flashed with different firmwares? I tried the Swung boot loader which you linked - it seems to perform exactly as Hervé's does - albeit this occasionally occurs: "but it would occasionally cut off while dragging or using the cursor, which is more frustrating (the buggy and jumpy trackpad bug dissapeared though). " however it is very slight for me (once every 10 minutes, barely noticeable). As an aside, what did you do for wi-fi? Did you replace your internal card?

Hey Fuzeless, Are you using OpenCore as I was, or Clover or some other bootloader? I've resorted to using clover for the timebeing as I'm exhausted with trying so many different options and getting nowhere. The trackpad works perfectly under clover using the bootpack I linked to previously. OpenCore is another story entirely. I have tried so many different configurations at this point, such as different versions of I2C and I2CHID; +- XOSI +- GPIO +- XOSI + GPIO + various hotpatches of GPIO and XOSI +- Mojave OS +- Catalina OS +- transplanting the SSDT-I2C.aml file from Hervé's bootpack. Since my first post I attempted GPIO pinning the trackpad. According to the guide it is already very-well-pinned but I made some edits to the DSDT file to remove extra entries in XCRS section so that "Return (ConcatenateResTemplate (SBFB, SBFG))" was the only return statement. Also tried patching the dsdt with the three recommended patches but the laggy trackpad behaviour was still the same. Weirdly, if I pull-up the trackpad in IORegExplorer, while booted with clover, it lists values under gpioIRQ and gpioPin (see screenshot). These properties are not defined under OpenCore, even with the custom DSDT for GPIO pinning + patches. This seems relevant. If you're still experiencing issues then maybe it is worthwhile testing Herve's bootpack to see if that resolves the problem?

Ah yes, Intel I2C does show as being loaded in IORegExplorer. I removed AppleIntelLpssI2C.kext, AppleIntelLpssI2CController.kext and AppleHPM.kext, reloaded kext cache, and sadly the problem sticks. I also tested an alternative opencore configuration using a custom GPI0, and no SSDT-XOSI file but the results are largely the same. Might try an upgrade to Catalina tomorrow and pray that will solve it.

Tried this using VoodooI2C V2.14 and VoodooI2CHID V1.0 (copied from Hervé's files) which fixes the jumpy cursor problem but comes with a different problem: laggy cursor movement - which is even more bothersome and frustrating. I've also tried various other VoodooI2C versions (between V2.14 and V2.4.2) which generally result in one problem or the other.

I followed the OpenCore laptop guide provided by dortania.github.io which has worked splendidly well, however I am encountering some issues with the trackpad. The cursor's movement is jumpy. When moving the cursor, or when taping to click, the cursor often jumps to a different position on the screen. Has anyone encountered a similar issue before and can provide some pointers, or has some idea of what's up here? SPECIFICATIONS: DELL Latitude 7490 CPU model - Intel Core i5 Kaby Lake-U/Y OS Version - Mojave 10.14.6 VoodooI2C - v2.4.2 VoodooI2CHID - v1.0 INSTALLATION DETAILS: Using Rehabman's hotpached SSDT-XOSI and have applied the _OSI to XOSI Rename patch to my config.plist file (see https://dortania.github.io/oc-laptop-guide/prepare-install-macos/setting-up-input-devices.html for links/details). Oddly enough, the trackpad works perfectly under Clover, using Hervé's bootpack. Is there someway of transplanting the relevant sections from this clover bootpack into my vanilla opencore installation? TROUBLESHOOTING ARCHIVE: https://drive.google.com/open?id=1A3n1v9XQ_yzHsY__6bo2Y4Ltr0toZ1cl