![]() Here are the mode values that my monitor accepted: It must be pushing DisplayPort 1.2 beyond its limits a bit. I tested this on my LG 32UL500-W and it actually works all the way up to 80hz, but not 85hz. It could damage the monitor.įollow this guide to download and compile CVT: You can use this modified version of CVT to generate those values anyway and push your monitor to its limits, but be careful running your monitor at rates higher than its spec. None of the online calculators seem to give me appropriate values either.ĬVT 1.1 does not generate reduced blanking values for any rate other than 60 or a multiple of 60. I know 120hz is out of the question because DisplayPort 1.2 doesn't support that at 4k and there's no way my monitor will handle that rate. ![]() Is there really no way to calculate an appropriate set of values for 75hz? I wish cvt would at least give me the option to calculate values for 75hz using -r so I could at least try them. My monitor doesn't understand the signal if I try to apply those modes at either 60hz or 75hz. If I run that same command without the reduced blanking flag, I get wildly different numbers that don't work when I add them to xrandr and apply them to a display. $ cvt 3840 2160 75 -rĮRROR: Multiple of 60Hz refresh rate required for reduced blanking. However, this command doesn't work if I try calculating the values for anything above 60hz. If I calculate it using cvt 3840 2160 60 -r I get the same values. When I run xrandr -verbose, it shows me the default VESA mode for 4k 60hz: 3840x2160 (0x5a) 533.250MHz +HSync -VSync It looks like DisplayPort 1.2 handles 4k at 75hz. I'm trying to see if my LG 32UL500-W monitor will overclock beyond 60hz. ![]()
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