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KDE is an international technology team creating user-friendly free and open source software for desktop and portable computing. KDE’s software runs on GNU/Linux, BSD and other operating systems, including Windows.

Plasma 6 Bugs

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How do I disable HDR? (lemmy.ml)

submitted 7 months ago* (last edited 7 months ago) by [email protected] to c/[email protected]

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So today I clicked 'enable HDR' on one of my monitors and something broke. The whole system froze up and the HDR monitor went black. If I reboot it freezes right after I login.

If I unplug that monitor or start in X11 instead of Wayland then everything is fine. Plugging the HDR monitor in while I'm logged into a Wayland session also freezes everything.

How can I disable the HDR setting? The monitor doesn't show in System Settings whilst its unplugged so I'm hoping theirs some way to fix it on the CLI. The only place I've found HDR referenced is .config/kwinoutputconfig.json. I set HDR to false but after reboot it's set to true again. I also tried deleting .config/kwinrc and .local/share/kscreen but no luck.

I'm fine with just resetting all Display settings if that's required.

----- UPDATE ------

Bug report filed here: https://bugs.kde.org/show_bug.cgi?id=485403

Fixed by

Ctrl + Alt + F3 to go into terminal
Set HighDynamicRange and WideColorGamut to false in ~/.config/kwinoutputconfig.json
Execute plasmashell --replace
Reboot, Login, Reattach HDR Monitor

Thank you everyone for your help 🎉

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[–] [email protected] 0 points 7 months ago

This worked 👍 Thank you I also filed a bug report https://bugs.kde.org/show_bug.cgi?id=485403