https://bugs.kde.org/show_bug.cgi?id=491183

            Bug ID: 491183
           Summary: [Feature Request] Support for custom display modelines
                    in KWin Wayland session using kscreen-doctor as an
                    interface
    Classification: Plasma
           Product: KScreen
           Version: master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: wishlist
          Priority: NOR
         Component: kscreen-doctor
          Assignee: kscreen-bugs-n...@kde.org
          Reporter: sybo...@gmail.com
  Target Milestone: ---

Currently, custom modelines are only supported on an Xorg session using xrandr,
or on Wayland by using a custom EDID. My request is to have support for adding
custom modelines on-the-fly in Wayland sessions like what xrandr allows for.

This has several real world usecases, such as better support for CRT monitors
and TVs, being able to overclock displays to output at a higher refresh rate
than its EDID says it's compatible with, being able to control resolutions and
refresh rates on displays that do not provide an EDID (like a 15KHz CRT TV when
using adapters/converters), being able to use super resolutions (large
horizontal resolutions with a smaller vertical resolution), and probably some
other usecases as well (CRT SwitchRes being another example).

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