在幾個月後
論壇的文章總算看到AMD官方的人員出來回覆了
https://community.amd.com/message/2904758
以下原文
反正就等吧
Fixed in 19.Q2 driver available on May 8th.
Root cause:
Whenever a monitor has a CEA extension block with a CEA SVD for
[email protected] the current and some previous drivers (except
18.Q1.1 and older) use 594MHz pixel clock and for that we do not
have enough bandwidth to do 10bpc, that's why the color depth
jumps back to 8bpc. Obviously the monitors without the above
mentioned CEA extension block did not have any issues reporting
10bpc/RGB444/[email protected]
CEA extension block with a CEA SVD is mostly used for digital TVs
& HDMI connections
Interim Workaround:
Emulate the EDID of your monitor with a Bit Rate of 8.1 GHz, that
might work for some monitors. If you need assistance with that, PM me.
Exception:
BenQ EW3270 still reports 594MHz, which seems to be a monitor issue
(still under investigation). However changing the Bit Rate to 8.1GHz
(HBR3) resolves the issue.