Funky frank Posted August 16, 2014 Share Posted August 16, 2014 Hi, I currently try to fully enable my Haswell Intel's i7 4770 HD4600 graphics device in OSX 10.9.4 Mavericks. It is already detected by AGPM. I currently use this "AAPL,ig-platform-id": 0x03, 0x00, 0x22, 0x0D I want to use it as secondary gfx device next to my main discrete device ATI HD5570. But the DVI port of the HD4600 shows the desktop with a lot of "noise", lots of random pixels. Also Maps app that seems to use OpenCL, shows pixel noise while fading in parts of the map: The screenshot was takenon the output of ATI. If I disable HD4600, the corruption disappears. I can see the Intel HD4600 in the OpenCL benchmark tool as processor. What can be the cause for this? IGPU is correctly detected... I did not patch the AzulFramebuffer for proper connectors configuration. I read Toleda's docs, but cannot find the config "VGA / DVI / HDMI". But since I don't have a monitor connected until now to the H4600 and only testing OpenCL, is this relevant? Attached my DSDT/ioreg. Thanks for any hints. ioreg.zip DSDT.aml.zip 1 Link to comment Share on other sites More sharing options...
Funky frank Posted August 17, 2014 Author Share Posted August 17, 2014 No idea here what approach I could take for fixing this problem? Link to comment Share on other sites More sharing options...
Funky frank Posted August 20, 2014 Author Share Posted August 20, 2014 I compared current original ACPI with my patched one: It's exactly the same. I also patched the output of the intel azul kext: no change. Any ideas here? Link to comment Share on other sites More sharing options...
Funky frank Posted August 20, 2014 Author Share Posted August 20, 2014 If I connect a monitor to HDMI of HD4600, the computer crashes / restarts. Link to comment Share on other sites More sharing options...
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