# HDR Toggle vanished from system settings

**URL:** <https://discuss.kde.org/t/hdr-toggle-vanished-from-system-settings/23735>\
**Category:** Help\
**Tags:** kwin, systemsettings\
**Created:** [October 17, 2024, 9:37am UTC](https://discuss.kde.org/t/hdr-toggle-vanished-from-system-settings/23735 "2024-10-17T09:37:04Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Zamundaaa](https://discuss-cdn.kde.org/letter_avatar_proxy/v4/letter/z/ac8455/32.png) [@Zamundaaa](https://discuss.kde.org/u/Zamundaaa)\
**Post date:** [October 17, 2024, 8:03pm UTC](https://discuss.kde.org/t/hdr-toggle-vanished-from-system-settings/23735/5 "2024-10-17T20:03:58Z")

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The toggle was intentionally removed for NVidia users, because of a very severe driver bug that reportedly blocked a lot of people from even logging in after they enabled HDR. You can enable it again by putting `KWIN_DRM_ALLOW_NVIDIA_COLORSPACE=1` into /etc/environment and rebooting

Note that you may experience that driver bug as well; if you do, removing that environment variable and rebooting should allow you to log in again.

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_[View the full topic](https://discuss.kde.org/t/hdr-toggle-vanished-from-system-settings/23735)._