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Found 2 results

  1. Alexandru

    Serious colour banding

    Hello InsanelyMacForum, I managed to boot into Mac OS Sierra with my Intel Core 2 Duo, Nvidia 9400 GT and 4 GB of Ram machine, got internet and sound working, but the issue appears when I boot with Nvidia Web Driver. I get these acid colours, but Graphics Acceleration is working fine. I tried to inject EDID from my display, but no results as well. Would be really grateful if someone could provide some help. Thank you!
  2. [sOLVED] - Look at the end of this post for solution. Hi all, I have a Lenovo IdeaPad Y510p with Intel HD 4600 graphics as shown in my signature. Now, as the title says, I am having issue with my graphics. When i put the display to sleep or do anything that switches display off, like, changing resolution, putting display / system to sleep etc., after waking up it seems like there are 16-bit colours instead of normal 32-bit. Pardon the low quality capture of the glitch, as I was not able to capture the details in my {censored} camera. Anyway, this is how the bands/gradients/16-bit colours look : These are not exactly like 16-bit but they do seem like it in translucent areas (like launchpad, notification center), shadows, desktop wallpaper etc. Again, it only happens after turning display off then on. Also, just for the record, I do have QE/CI, and everything else like Power Management, Sleep, etc working perfectly. Other posts about same issue: It seems like those having Lenovo Y510p and Y410p are suffering from these problems, also a guy having an Asus K550JK, all of them having same IGPU HD4600 of course. You can see the posts linked below regarding this issue : Y510p reference here (under "Not Working" section) Asus K550JK reference here. Y410p reference here. I also made some posts regarding this issue in a thread dedicated to "Fixing IGPU" here and here. Things i've tried so far : different ig-platform-id's with patched framebuffer data. changing DVMT pre-alloc memory in BIOS and patching framebuffer to match. custom EDID Injection and all of them didn't help. Now, i have dumped the Intel Registers in both Linux and Mac. I've been trying for hours to make sense of them but i couldn't right now (but I'm trying hard). I'd appreciate it very much if somebody would take a look. Attached is the whole folder containing dumps before and after system sleep (and display sleep too) in both Linux and Mac. I could not find any solution for this issue, and if anybody has this issue or solved it or any ideas, please post here. It would be great to hear from you guys. Thanks in advance. ======= Solution : ======= Thanks to @RehabMan and @vusun123 for their suggestions coz of which the issue is fixed. @ahmed_ais, thanks for the hard work mate. You are making OS X experience in Y510p more awesome day by day. Also, thanks to all i forgot to add for their contribution and suggestions. So it turns out the solution is actually an easy one. The EDID info needed to be customised for proper functioning of the display. Specifically: Change EDID version from 1.3 to 1.4 Change basic parameter from 80 -> 90 Fix the checksum Original EDID from Darwin Dumper: header: 00 ff ff ff ff ff ff 00 serial number: 30 e4 16 04 00 00 00 00 00 17 version: 01 03 basic params: 80 23 13 78 0a chroma info: 15 d5 9e 59 50 98 26 0e 50 54 established: 00 00 00 standard: 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 descriptor 1: 1a 36 80 a0 70 38 1f 40 30 20 35 00 59 c2 10 00 00 19 descriptor 2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 descriptor 3: 00 00 00 fe 00 4c 47 20 44 69 73 70 6c 61 79 0a 20 20 descriptor 4: 00 00 00 fe 00 4c 50 31 35 36 57 46 31 2d 54 4c 43 32 extensions: 00 checksum: 7d Modified EDID: header: 00 ff ff ff ff ff ff 00 serial number: 30 e4 16 04 00 00 00 00 00 17 version: 01 04 basic params: 90 23 13 78 0a chroma info: 15 d5 9e 59 50 98 26 0e 50 54 established: 00 00 00 standard: 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 descriptor 1: 1a 36 80 a0 70 38 1f 40 30 20 35 00 59 c2 10 00 00 19 descriptor 2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 descriptor 3: 00 00 00 fe 00 4c 47 20 44 69 73 70 6c 61 79 0a 20 20 descriptor 4: 00 00 00 fe 00 4c 50 31 35 36 57 46 31 2d 54 4c 43 32 extensions: 00 checksum: 6c As you can see, the changes are in "version:" from 03 to 04, "basic params:" from 80 to 90 and the calculated checksum from 7D to 6C which might be different for you. Source if you need it. Intel Reg Dumps.zip Intruder’s MacBook Pro.ioreg.zip config.plist.zip
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