[Solved] Need help for video acceleration on NUC

[Hervé]

Congrats.

 

So KBL mobile framebuffer 0x591e000 it is then!

ID: 591E0000, STOLEN: 34 MB, FBMEM: 0 bytes, VRAM: 1536 MB, Flags: 0x0000078B
TOTAL STOLEN: 35 MB, TOTAL CURSOR: 1 MB (1572864 bytes), MAX STOLEN: 103 MB, MAX OVERALL: 104 MB (109588480 bytes)
Model name: Intel HD Graphics KBL CRB
Camellia: CamelliaDisabled (0), Freq: 1388 Hz, FreqMax: 1388 Hz
Mobile: 1, PipeCount: 3, PortCount: 3, FBMemoryCount: 3
[0] busId: 0x00, pipe: 8, type: 0x00000002, flags: 0x00000098 - ConnectorLVDS
[1] busId: 0x05, pipe: 9, type: 0x00000400, flags: 0x00000187 - ConnectorDP
[2] busId: 0x04, pipe: 10, type: 0x00000400, flags: 0x00000187 - ConnectorDP
00000800 02000000 98000000
01050900 00040000 87010000
02040A00 00040000 87010000

with con1 patched for Pipe=0x12 and Type=HDMI, at least according to your IOREG because it sure ain't in your last posted config.

 

For some reason you also inject this and it really is not necessary (and incorrect) but it's just cosmetic, so...

model        Intel HD Graphics CFL CRB        DATA

Injecting "Intel Graphics UHD 620" would be much more appropriate.

con0 patches can also be removed with this mobile frame buffer, con0 being for an eDP/LVDS built-in screen.

 

Try and add boot arg igfxonln=1 to your OC config to force all displays online.

[quartz38]

Thanks Hervé, your last advice worked, display stay alive without disconnecting HDMI