Hi,
I've recently mastered a Dell Latitude E7470 (Skylake) laptop to perfection, but i can't get 4K on neither HDMI or DP.
HDMI is 1.4 so it'll do 4K@30hz, DP is a miniDP 1.2 which can do 4K@60hz, which of course i can confirm these numbers from Windows. macOS will do 1440p@60hz the most on both ports.
This is my Device Properties:
| PciRoot(0x0)/Pci(0x2,0x0) | ||
|---|---|---|
| Key | Class | Value |
| AAPL,ig-platform-id | Data | 00001619 |
| AAPL,slot-name | String | Internal@0,2,0 |
| device_type | String | VGA compatible controller |
| framebuffer-con1-enable | Number | 1 |
| framebuffer-con1-flags | Data | 87010000 |
| framebuffer-con1-pipe | Data | 12000000 |
| framebuffer-con1-type | Data | 00080000 |
| framebuffer-fbmem | Data | 00009000 |
| framebuffer-patch-enable | Number | 1 |
| framebuffer-stolenmem | Data | 00003001 |
| model | String | HD Graphics 520 |
macOS reports it having "1536 MB". The DVMT changes did not much for it (it's mandatory to at least increase the values to 96+ to get macOS running), and when i tried going for the 2048 MB option through the uefi-shell, the system wouldn't turn on at all.
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