How to change color depth

Help
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1

Hello,
I am using Kinoite 43, fully updated, with a RTX 3060 Nvidia GPU and I would like to edit some things, but can’t find where to do that.
I do have a program called: NVIDIA X Server Settings which is started as nvidia-settings. But this is a program with which I can’t do very much, it’s more a readout of what’s going on in the GPU. This is what I get when I start it:

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image548×499 27.8 KB

Yes, there are other tabs but they also don’t have possibilities to change the GPU.

What I would like to change is the color bit depth. I think I don’t have enough colors because when watching something with (almost) 1 color I see lines separating one color from the next:

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With a higher color depth this should not be visible.

So, simple question, how do I change the color depth? My monitor is limited to 10 bits but I wonder if I really use that.

2

On KDE 6.5 there is a color resolution setting in “system settings>display & monitor” if your hardware reports it correctly.

I have options for 10bit, 8bit, and 6bit.

3

I have the same setting but only for my internal screen, it’s not there for the external monitor. That’s the one with the bad pictures. The internal one is set to 16 bits per color and it is fine.

4

Make sure you’re using a display port connection instead of HDMI. And also make sure your system is detecting and configuring the monitor correctly. I have no idea where that would be on your distro.

5

Thanks for the answer. A display port connection on my laptop is not present so I have to use HDMI.

I have a KDE DE so it is simply a right-click on the desktop and then Display configuration.

6

Nope, that will help you configure a correctly detected monitor, but not one that isn’t detected correctly.

Try ddcutil detect and ddcutil capabilities from the terminal, some KDE configurations use it but your distro may be configured some other way.

Edit: I’ve just learnt there is also kscreen-doctor on KDE