I'm happy to report that my LG Ultrafine 5K (2019) is now working at full 5K : 5120x2880@60Hz thanks to a
GC-Titan Ridge PCIe card (with 2 DP inputs coming from the Radeon VII, 1 TB3 output to the display) :
Code:
DID-EXT: Display ID Extension:
------------------------------
(only partly interpreted)
DisplayID version........1.2
DisplayID Block Type = Detailed Timing Block type 1:
Detailed Timing #1 in Block
Mode = 5120 × 2880 @ 59.993Hz
Pixel Clock............. 938.25 MHz Non-Interlaced
Horizontal Vertical
Active.................. 5120 pixels 2880 lines
Front Porch............. 48 pixels 3 lines
Sync Width.............. 32 pixels 5 lines
Back Porch.............. 80 pixels 74 lines
Blanking................ 160 pixels 82 lines
Total................... 5280 pixels 2962 lines
Scan Rate............... 177.699 kHz 59.993 Hz
Is default Mode
AGDCDiagnose confirms there's
two DP 1.2 HBR2 connections just like with my MacBook Pro :
Code:
Connections:
* 1: [DP 1.2 4 x HBR2] Status: [4 x HBR2 7777] caps [features 0x101001b, p_encoding 0xd] Sink OUI:204-045-140 27MD5K [050-055-077-068-053-075] HW Version: 48 FW Version: 3.4
* 2: [DP 1.2 4 x HBR2] Status: [4 x HBR2 7777] caps [features 0x101001b, p_encoding 0xd] Sink OUI:204-045-140 27MD5K [050-055-077-068-053-075] HW Version: 48 FW Version: 3.4
3:
4:
5:
6:
There's still a lot of tests to be done and only the display is working at the moment (no USB-C, internal camera, speaker and microphone) but it's showing promise.
I plugged the GC-Titan Ridge card in the PCIEX8 slot of the Designare because my PCIEX4 slot is currently blocked by a piece of water-cooling tubing. I think it should be plugged in the PCIEX4 to run from PCH since there's already the internal Alpine Ridge running on the CPU.
I'll try disabling the internal thunderbolt controller and/or using the PCIEX4 on PCH to see if I can get full Thunderbolt functionality but there's hope !
