No HDR in Nobara Linux

Plex Players Desktop Players
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Player Version#: 1.69.0.264-8ae11259
GPU: Nvidia GeForce RTX 4070

I have very little knowledge of Linux, but I have researched which distribuations support HDR, and I ended up installing Nobara Linux. It features KDE Plasma 6.2.5 and uses the Wayland graphics platform.

I am able to activate HDR in the (KDE) display configuration, and the monitor changes the mode accordingly.

Problem #1: In the Plex HTPC Video Settings, both options for HDR are missing (Enable HDR Switching, HDR Metadata Passthrough). Are these options only available in the Windows version?

Problem #2: I have ticked “Enable Refresh Rate Switching” and “Enable Resolution Switching”, but Plex HTPC does neither.

Did anyone have better success and can give me any tips? Your help would be appreciated.

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Changing display modes is performed via xrandr as it was the only mechanism to do any such changes. This won’t work with wayland. In fact, last I looked, changing refresh rates was completely missing from wayland and seemed to be intentionally so.

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Thanks for your explanation. Do you think it is even possible in ANY Linux distribution to have Plex HTPC change HDR mode and refresh rate?

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I can’t answer to changing HDR mode but for refresh rate and resolution, you can change these if you use X Windows and not Wayland. It’s not a distribution difference; it’s the display server.

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Thanks for your reply @gbooker02. So if I understand correctly, X Window does not support HDR (according to ArchWiki), and Wayland doesn’t allow applications to switch refresh rates.
HDR and refresh rate switching work fine on Windows 11, so I guess I’ll just stick with it for the time being.

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That fits with my understanding. Honestly the HDR in Windows is likely the best right now, especially when you use HDR metadata passthrough.

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