I think we are looking at solving the OP's question.
Quote:I can only find the source frames (23.976 fps) but not the display refresh rate.
I don't think the codec info in Kodi should be relied on entirely. I think that's why things were omitted in the 1st place, but I could be wrong.
I find using a combination of the Kodi codec info window AND the display info overlay useful during software setup for hardware. Also the info for, AVR, GPU, player, and display.
Furthermore, Nvidia in particular, you will be able to see exactly what settings are available during certain playback and those that are not making this an 'info' in itself.
This way I know exactly what I am putting in and what I am putting out and how to adjust each software accordingly.
There are many, many valuable test titles in the wiki. Everything from HDR, 3D, 10 bit, 60Hz, 4k, etc.
If you are playing these, and your info overlays tell you something other than what these titles ACTUALLY are, you have some work to do.
By using all the info from all the sources it should help nail down any problem(s), common during new setups or changes to existing ones.
The OP found info for the source. He's asking for the display. Perhaps he too is checking his system? I suggest 1st use the wiki's test files so you know exactly what your source is. Confirm it using mediainfo. Make triple sure with Kodi codec info and for those quick limited reference times. Then check your display info window against your displays capabilities. Then check your GPU software which should change automatically to match various titles and can be tailored. On the subject of refresh rate, I encourage folks to use the match refresh rate setting on any player including Kodi. If your title was mastered in 60 or 23.976 wouldn't you want to match that during playback to avoid a multitude of problems let alone the over processing? Not to mention other much more complex settings handshaking throughout your system.
Point being, even if the codec info window showed everything one could dream of, I would still rely on all the other info sources as well.
If none of this applies to you, as I stated earlier, press the info button on your display to see what it is rendering although I have no idea why you would even be looking at this point.
As far as plasma pulldown workarounds or 240Hz interpolation in my case, you will never see post processing display in any info window anywhere afaik.
Hope this helps you and perhaps others.