- Jun 26, 2012
- Z170 Deluxe
- GTX 970
- Mobile Phone
Yes there are different states the Intel graphics controller is in through POST/Boot. Maybe if Clover or our BIOSes had an independent display mode other than simultaneous which it seems to have we'd be able to boot connected to more screens. Obviously just a thought. Maybe Apple will fix this in the next 10.11.6 update.I'm running F6 BIOS at the moment. I suppose an upgrade to F7 might be worth it if I can be bothered to find a USB stick etc.
Well, from what you said above, there is clearly a state that the computer can be in (and I'm betting it's a state the Intel 530 can be in) where it's attached to two monitors and boots successfully - that's whatever state it's in when you power on the second monitor e.g. during the clover boot process. And there's another state where it crashes. If Clover could put the Intel 530 back into the first state, it seems to me it would be indistiguishable from the monitor just having been plugged in.
I agree re the Skylake Macbooks, but it may be precisely that they are only expecting to set up an HD515, not an HD530, so the HD530 may be consequently be in some invalid state. I'm presuming the clover setup is UEFI GOP or Int 15h or similar. I'm thinking perhaps one could so something like this (set the output device using GOP SetMode). Clover is already playing with GOP's SetMode - see here. Perhaps Clover could be persuaded, as in the PDF, to set things up for a single monitor only.
Actually despite what the Internet says, the actual BIOS doesn't seem to have that setting anyway.
I can boot with my GTX970 and HD530 without issues so its not an OS X issue when it comes to dual monitors.
IGPU Multi Monitor is in my BIOS and I tested it a while ago, enabled and disabled with no change.