- Joined
- Mar 8, 2017
- Messages
- 758
- Motherboard
- Dell XPS 9700 4K (OpenCore)
- CPU
- i7-10875H
- Graphics
- UHD 630, 3840x2400
- Mobile Phone
Hey there!
I'm trying to get my USB-C video working, on a T480s, with the i7 8550H. External Monitor is 4K@60Hz, connected through DP using a TB3 adapter. Working fully under Windows 10.
Using macOS, the internal screen goes black and the external has a max. res. of 2K. Spent my whole day on this, I think I'm at a dead end now. When I unplug the thunderbolt-cable, my laptop basically crashes with a black screen. Image comes back after lid open and close, but it is still in a crashed state and allows no more input.
My current config is attached, this is what the framebuffer looks like:
No other framebuffer than 0x00001659 seems to work for me, no image otherwise. Fbmem, stolenmem and unifiedmem seem to be correct, since internal works just fine. Tried LSPCON patching to maybe receive full 4K, no success. Tried different pipe-values, no success. Pixel-clock override does nothing, no matter if enabled or disabled. :/.
Any further ideas on this? Happy to share further information if needed.
I'm trying to get my USB-C video working, on a T480s, with the i7 8550H. External Monitor is 4K@60Hz, connected through DP using a TB3 adapter. Working fully under Windows 10.
Using macOS, the internal screen goes black and the external has a max. res. of 2K. Spent my whole day on this, I think I'm at a dead end now. When I unplug the thunderbolt-cable, my laptop basically crashes with a black screen. Image comes back after lid open and close, but it is still in a crashed state and allows no more input.
My current config is attached, this is what the framebuffer looks like:
No other framebuffer than 0x00001659 seems to work for me, no image otherwise. Fbmem, stolenmem and unifiedmem seem to be correct, since internal works just fine. Tried LSPCON patching to maybe receive full 4K, no success. Tried different pipe-values, no success. Pixel-clock override does nothing, no matter if enabled or disabled. :/.
Any further ideas on this? Happy to share further information if needed.