MikeGiff Posted November 9, 2017 Share Posted November 9, 2017 Hi Im having trouble getting dual external monitor output when docked. I have 1x DVI connected and 1x HDMI using a HDMI to DP adaptor. I cannot recognise the HDMI/DP monitor. DVI works ok. I am running Sierra using Clover as per Jake Lo's guide. First question is - should this work OOB based on the standard bootpack from the guide? Have tried booting with lid open/closed, sleeping then wake, only one monitor connected etc. but nothing seems to recognise the HDMI. Thanks Mike Link to comment Share on other sites More sharing options...
Administrators Hervé Posted November 9, 2017 Administrators Share Posted November 9, 2017 HD3000 only supports 2 x concurrent displays, not 3. As such, you can get dual external displays if and only if the lid is closed. Once you've applied the appropriate SNB framebuffer patches, all will work. Check these posts: https://osxlatitude.com/index.php?/topic/7914-dell-latitude-e6220-with-i5-2520m-hd3000-and-1366x768-lcd-mavericksyosemiteel-capitansierra/&do=findComment&comment=52237https://osxlatitude.com/index.php?/topic/7914-dell-latitude-e6220-with-i5-2520m-hd3000-and-1366x768-lcd-mavericksyosemiteel-capitansierra/&do=findComment&comment=57882https://osxlatitude.com/index.php?/topic/7914-dell-latitude-e6220-with-i5-2520m-hd3000-and-1366x768-lcd-mavericksyosemiteel-capitansierra/&do=findComment&comment=58826https://osxlatitude.com/index.php?/topic/1969-guide-for-enabling-vga-and-hdmi-in-intel-hd3000-gpu/If you use this patch for port 0205: 02 05 00 00 00 08 00 00 06 00 00 00 // patched: HDMI/DP display port (built-in/docking port) I expect you'll be able to use the HDMI port or the DP port without further mod. I'll have to verify that, it's been a while since I last played with this... Link to comment Share on other sites More sharing options...
MikeGiff Posted November 9, 2017 Author Share Posted November 9, 2017 I don't seem to be having much luck. I updated the Kext by basically changing the following 02 05 00 00 00 08 00 00 05 00 00 00 to 02 05 00 00 00 08 00 00 06 00 00 00 Followed by copy to /S/L/E and Repair/Rebuild then reboot. I still don't get the DP monitor show up when I do a 'detect displays'. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted November 10, 2017 Administrators Share Posted November 10, 2017 Sorted with following SNB patch: 01 02 04 00 10 07 00 00 10 07 00 00 // vanilla: nb of connectors -> "04" 05 03 00 00 02 00 00 00 30 00 00 00 // vanilla: laptop's own LCD display 02 05 00 00 00 08 00 00 05 00 00 00 // patched: HDMI, display port #5 (built-in port) 03 04 00 00 00 04 00 00 06 00 00 00 // patched: DP, display port #6 (docking-station port) 04 06 00 00 00 04 00 00 07 00 00 00 // patched: DVI, display port #7 (docking-station port) Link to comment Share on other sites More sharing options...
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