Re: [求助] EW3270U 10bit設定疑問

看板LCD (電腦螢幕)作者vwvwbg (VwVwBg)時間7年前 (2019/03/16 14:58)推噓4(4推 0噓 18→)

留言22則, 8人參與討論串2/3 (看更多)

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 3840x2160@60Hz 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/RGB444/4K@60Hz 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. -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 122.116.161.14 ※ 文章網址: https://www.ptt.cc/bbs/LCD/M.1552719523.A.756.html ※ 編輯: vwvwbg (122.116.161.14), 03/16/2019 14:59:23

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seiya2000

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AKSN74

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AMD員工有貼另外兩張圖解釋 https://goo.gl/G32G2x https://goo.gl/FPUzKH 用了不同的標準造成螢幕達成10bit RGB444所需要的頻寬不同順帶一提DP1.2的頻寬是21.6Gbit/s 不過我不是很懂得是 DP1.4給的頻寬應該是高過這個值的而卡線螢幕都有DP1.4的情況下卻沒有辦法 ※ 編輯: vwvwbg (122.116.161.14), 03/16/2019 18:01:17

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quamtum

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