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Joined 3 years ago
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Cake day: June 4th, 2023

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  • It’s fairly straightforward nowadays and will get even easier this year.

    In KDE, you can just enable HDR and hit apply. There’s also a calibration tool integrated that is a little bit barebones but it does the job.

    For gaming, you currently still need Proton-GE until Valve’s Proton ships with the necessary libraries. You can easily download them using ProtonUp-Qt.

    Once that is done:

    • Restart Steam
    • Right click the game -> Properties...
    • Set the launch options to PROTON_ENABLE_WAYLAND=1 PROTON_ENABLE_HDR=1 %command%
    • Under Compatibility set the checkmark “Force the use of a specific Steam Play compatibility tool” and select the Proton-GE version you just installed before.

    That’s it, you can now enable HDR ingame.






  • If you’re on KDE, you can use the “sRGB color intensity” to quickly test if your content (e.g. via mpv or Proton) is really in HDR.

    If the content changes while going from minimum to maximum in “sRGB color intensity”, it’s SDR, if it does not change, it’s HDR.

    I also have an OLED monitor and HDR looks fantastic on KDE.





  • The first one I think is a fundamental limitation in that display preferences by default is per-user. Maybe this makes it work for you? https://feddit.online/post/1350756/comment/6636228

    I don’t really have this problem anymore since I got rid of my projector which advertised a resolution it couldn’t handle. Had to login into the void since the login screen never showed up. Looks like this might be fixable nowadays.

    The 24h clock might be similar - check your system-wide locale.

    The locale is set to American English but the time format is set to German, something the lock screen can handle but SDDM cannot. I also tried applying the Plasma settings to SDDM a few times but it doesn’t really change anything.