- Apr 5, 2016
- GIGABYTE Z170X-Gaming 7
- GTX TITAN X
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- Classic Mac
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- Mobile Phone
Single port works because the 5700XT supports DSC. In fact, you can use a Moshi DisplayPort to USB-C cable to connect the display without the Titan Ridge.Yes! Sorry I should have mentioned it before, completely forgot the thread was for the Ultrafine 5k. I'm working with the Pro Display XDR, Titan Ridge, and X299 board (Sage 10G) which has a thunderbolt header.
The 5700 XT works great with this display, although it seems I only need a single port connected to make it work. I've also tried with a Radeon VII, which I haven't been able to make it work with the 6K display, even with two displayport 1.4 attached.
Reg: 000060: 01 : DSC Support: 1 Reg: 000061: 21 : DSC Algorithm revision: 33 Reg: 000062: 00 : DSC RC Buffer Block size: 0 Reg: 000063: 0f : DSC RC Buffer size: 15 Reg: 000064: 0b : DSC slice Capabilities 1 : 11 Reg: 000065: 04 : DSC Line buffer bit depth: 4 Reg: 000066: 00 : DSC Block prediction support: 0 Reg: 000067: 00 : DSC Maximum bit per pixel: 0 Reg: 000068: 00 : DSC Maximum bit per pixel: 0 Reg: 000069: 01 : DSC Decoder color format capabilities: 1 Reg: 00006a: 0e : DSC decoder color depth capabilities: 14 Reg: 00006b: 02 : DSC Peak Throughput: 2 Reg: 00006c: 0c : DSC Maximum Slice width: 12 Reg: 00006d: 00 : DSC Slice capabilities 2: 0 Reg: 00006e: 00 : Reserved: 0 Reg: 00006f: 00 : DSC Bits per pixel increment: 0 Reg: 000090: 0f : FEC Capability: 0xf Reg: 000160: 01 : DSC Enable: 0x1 Reg: 00020f: 07 : DSC Status: 7
The Radeon VII probably doesn't support DSC so it should use dual link mode. You see both connections but they are only running at HBR2? HBR3 is required for 6K. Post AGDCDiagnose for Radeon VII connection, and SwitchResX timing info for the blurry resolution.The Radeon VII gets two displayport 1.4 attached at HBR2, but the text is all blurry.
You're sure that you are using the GC-TITAN RIDGE and not a GC-ALPINE RIDGE?
There was a problem with the Blackmagic eGPU where it would only connect at HBR2 speed instead of HBR3 speed. A firmware patch for the Blackmagic eGPU was released to fix that. I hope this isn't the same problem with the GC-TITAN RIDGE... Maybe the firmware patch should have been made for the XDR display...
Have you tried it in Windows?
Do you have a different DisplayPort 1.4/HBR3 display to test?
Try a single cable connection between the Radeon VII and GC-TITAN RIDGE.
Try a single cable connection between the Radeon VII and the XDR (using bi directional USB-C to DisplayPort 1.4 cable).
For each test, post AGDCDiagnose output.