Op 23-01-2021 om 23:18 schreef o1bigtenor:
OK, so this is your 4k monitor. It is plugged into the *secondary* GPU, and does not report any 4k@60 modes in the EDID (well, it does report 4k@60 YUV 4:2:0 modes, but we don't support those in nouveau at this time). Whether that's because the monitor itself doesn't support HDMI 2.0, or you plugged it into your old GPU which does not support HDMI 2.0, I couldn't say from just this output. What I can say is that no amount of modelines will get you 4k@60 in this setup with nouveau.
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If you would point out a suggestion that I haven't tried - - - please?
A quick DuckDuckGo for "Hisense 4K 60Hz only reports 30Hz" gives this thread: https://www.coolcomputing.com/article.php?sid=4659 . No idea whether this also applies to your 2016 model. Have you scavenged through the TVs menu's to make sure HDMI 2.0 is explicitly enabled?
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